P1494 jeep. Codes I got: P0138: O2 Sensor Circuit No Activity Detected (Bank 1 Sen...

flawlessco Discussion starter · Aug 14, 2012. ok so smog

Just replaced my battery, and after I did this I got a check engine light. Ran codes and got a P1494 LDP Pressure Switch, which seems to be some kind of emissions problem. I am also getting a hissing noise from the engine bay that I don't think was there before. Would this have been connected...Jeep Mechanic: Ron Z., - Jeep Tech - replied 3 years ago Thanks for holding, Bruce. The P1494 is a fairly straight forward code pointing to a problem with the Leak Detection Pump.Check engine light came on code P0505, P0135, P0155, P1494. 2002 Jeep Grand Cherokee; Open Questions: 0 answers. 99 jeep cherokee sport 4wd no spark. Read full answer. Be the first to answer Jun 03, 2014 • 2000 Jeep Cherokee. 0 answers. engine tapping noise tapping from top of engine.Feb 17, 2018 · Trouble codes on 2003 Jeep Liberty Renegade 3.7L V6 4x4 I have a 2003 Jeep Liberty Renegade 4x4 I got codes P0731, P0732 and P0734 and car will still be in drive when put into neutral and car won move when put in reverse, But driving is weird Shifts fine speeding up but if you let go of the gas it immediately starts slowing down like your ... what does the code p1494 means for a 2000 jeep grand cherokee laredo. Answered in 9 minutes by: DISCUSSION: DTC not equal to freeze frame DTC. Wiring harness intermittent problem. Wiring harness observable problem. LDP switch sense circuit open. LDP switch sense circuit shorted to ground. Leak detection pump.p1494 chrysler, dodge, jeep - evap leak detection pump pressure switch condition Descripción del código DTC P1494 Los sistemas EVAP (Sistema de control de emisiones evaporativas) capturan y contienen los vapores de combustible en un depósito sellado, evitando así que estos sean expulsados al ambiente.2008 Jeep Grand Cherokee SRT 6.1L with code B2100, what is the meaning? ... 1999 Jeep Grand Cherokee 4.0L with engine code P1494, what is the average cost of repair? asked Jul 26, 2018 by Scott. p1494; jeep; grand-cherokee; 0 votes. 1 answer 421 views. 2004 Jeep Grand Cherokee 4.7L with code P0080, what is it and what does it do?P1494 JEEP Description The Evaporative emissions system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, can allow vapors to escape into the atmosphere. The leak detection system tests for EVAP system leaks and blockage. During the self-diagnostics, the Powertrain Control Module ( PCM) first checks the ...99 in GEN2, WJ jeep. (USA name and car) p1494 P1 means factory only code, not USA FED code P0 so only the jeep book is truth here, okay.? chapter name Emission controls 25 page 13 there posted over 300 times. now. Leak Detection Pump Sw or "Mechanical Fault Incorrect input state detected for the Leak Detection Pump (LDP) …The Dodge P1494 engine light code means Leak Detection Pump Switch or Mechanical Fault. A proper diagnosis must be done, you can't simply replace the LDP and expect that to fix the problem. A proper diagnosis must be done, you can't simply replace the LDP and expect that to fix the problem.Békési Burger Bár, #5 among Gyomaendrőd restaurants: 455 reviews by visitors and 15 detailed photos. Find on the map and call to book a table.Jul 01, 2014 • 1999 Jeep Grand Cherokee. 0 helpful. 1 answer. P1494 CODE CHRYSLER CONCORDE. P1494: Leak detection pump pressure switch or mechanical fault ... P1494 is a Leak Detection Pump Switch or Mechanical Fault. During evaporative system diagnosis, Leak Detection Pumps have mistakenly been replaced. ...Is it an ignition coil problem? Or Is it something more.Copy ad Paste this text into a browser windowhttps://www.jeep.com/webselfservice/BuildSheetServlet?vi...About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Labor: 1.0. The cost to diagnose the P0123 Jeep code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.Chrysler has an error code P1494. This is a code that is thrown up when the Leak Detection Pump can not do the job it is intended for, which is keeping our ...SOURCE: IAC Valve Location - 1996 Jeep Grand Cherokee The idle air control valve is located on the back of the throttle body. It has an oval electrical connector and two torx screws holding it in. Unplug the connector, remove the two screws then lightly tap the body with a soft faced mallet to loosen it from the body.OBD code P1494 I have a 1999 Wrangler, 4.0L. OBD code P1494, which points to leak detection pump (LDP) or switch. ... stuff. ***** ***** One Jeep capable of taking you over the most extreme terrain in the world, . Trip to Moab to prove it to yourself and all your "nay-sayer " friends, $2100.00. A shady place to relax and bask in the glory of ...P1494 JEEP Description The Evaporative emissions system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, can allow vapors to escape into the atmosphere. The leak detection system tests for EVAP system leaks and blockage.2001 JEEP CHEROKEE OBD CODE P0442 . CHECK ENGINE LIGHT COMES ON INTERMITTANTLY DURING FIRST 5 MINUTES OF DRIVING , CLEAR CODES , LIGHT STAYS OFF FOR 1 OR 2 DAYS THEN WILL REAPPEAR DURING FIRST 5 MINUTES OF OPERATION. SYSTEM HAS BEEN SMOKE TESTED , 3 WIRE. DIAPHRAM AT FIRE WALL REPLACED AND FUEL PUMP MODUEL AND FUEL CAP. Answered in 3 minutes by:P1495 EVAP Leak Detection Pump Solenoid Circuit Condition. ***EDIT*** I posted the wrong code.. It SHOULD be P1494. (I posted 1495 accidentally) So I've had this code for a while and wanted to check in and see who else has had this code and what the end fix was for it for you. I'm well aware of what the code is and what it means but I want to ...SOURCE: what is code 1494 mean for 2001 dodge neon P1494 Leak Detection Pump Switch or Mechanical Fault Part of the early evaporative emission system. (Fuel tank fumes) It's there to allow the computer to run an integrity test of the fuel tank, lines and carbon canister's ability to contain all of the fumes coming from the tank and all line associated with the system.We offer replacement PCMs for every generation of Jeep Wrangler. Jeep Wrangler JL (2018+) Replacement PCMs. Call for Price. Call for Price. Jeep Wrangler JK (2007-2018) Replacement PCMs. $592.20 - $1,292.20. Select options. Jeep Wrangler YJ (1986-1995) Replacement PCMs. Call for Price.P1494 is a DTC code that can appear on the onboard computer of your Jeep. The code indicates ‘ Leak Detection Pump Pressure Switch Condition .’ Simply put, this code indicates a problem with the engine’s evaporative emission control system, which stops harmful emissions from the engine from entering the atmosphere.Code P1494 Jeep Description. The Evaporative emissions system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system ca allow vapors to escape into the atmosphere. The leak detection system tests for EVAP system leaks and blockage.jeep trouble codes p1494 View All » Question about 2001 Chrysler Concorde. 1 Answer . P 1494 car is also making a low thumping sound. Posted by Tuskaroua Chico on Apr 01, 2014. Want Answer 0. Clicking this will make more experts see the question and we will remind you when it gets answered. ...SOURCE: jeep codes location of unit. Got me a complete manual for 199 jeep factory model and found location of each individual unit in question. Manual gives u possible solution to each code and repair and or replace. As a mechanic myself testing, trouble shooting and repair was not that difficult. Shift solenoid was very difficult to get to.OBDII/EOBD diagnostics trouble codes definition. If your car supports OBD II or EOBD, then you can already use almost 5000 generic OBDII codes. These codes are from PowerTrain series (P0XXX, P2XXX, P34XX), Body Series (B0XXX), Chassis series (C0XXX), Network series (U0XXX, U2XXX, U3XXX). Also there is a list of more than 13500 additional ...The P1494 is a fairly straight forward code pointing to a problem with the Leak Detection Pump. On your vehicle, the Leak Detection Pump is located under the hood, in the driver's side front corner of engine compartment below the air cleaner housing.P1494 Jeep: Leak detection pump pressure switch or mechanical fault U either have a leaking fuel system or the pressure sensor at the gas tank is defective, I would replace the pressure sensor 1st. Read full answer. Jul 02, 2009 • 2000 Jeep Cherokee. 1 helpful. 1 answer.P1494 JEEP Description The Evaporative emissions system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, can allow vapors to escape into the atmosphere. The leak detection system tests for EVAP system leaks and blockage.Jan 2, 2015 · A. GTPDrew · #2 · Jan 2, 2015. ar123 said: P1494 - LEAK DETECTION PUMP SW OR MECH FAULT. There are many codes for the Evap System but that one specifically denotes Pump SW or Mechanical fault. This Fault is reported when the PCM detected the leak detection pump switch did not change after the solenoid was energized. Labor: 1.0. The cost to diagnose the P1294 Jeep code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.Diagnose Difficulty of Inspecting Get Additional Help Solenoids are components in your vehicle that convert electrical energy to movement. They generally help with movements of valves and...P0301 is a fairly common trouble code with the Jeep Cherokee. It's an OBD2 code and indicates that your vehicle's first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your Cherokee. Fixing P0301 should be considered a high priority. Unlike a lot of the OBDII codes, this ...Check Engine Light - Easy Self Diagnosis 1999-2004 Jeep Grand CherokeeERROR CODES P0443, P1494, P0751, P1686,P0523 jeep Grand Cherokee WJ Check Engine CodesH...P1494 Jeep EVAP Leak Detection Pump Pressure Switch Condition. Read full answer. Feb 17, 2018 • Jeep Grand Cherokee Cars & Trucks. 5 helpful. 1 answer. P1494 code engine light on. Leak Detection Pump Switch or Mechanical Fault is P1494, Iit is an evaporative emissions device that is used to pressurize. It is located behind the drivers ...Diagnose Difficulty of Inspecting Get Additional Help Solenoids are components in your vehicle that convert electrical energy to movement. They generally help with movements of valves and...There are seven Jeep models as of 2015, including the Compass, Cherokee, Grand Cherokee and Patriot. The other models are the Wrangler, Wrangler Unlimited and the Renegade. Each Jeep vehicle comes in a variety of models, and each offers dif...2001 jeep cherokee has a p1494 code and a p0301 code seems to be running fine but want pass emissions. 0301 is cyclinder 1 miss fire,check coil pack and spark plug,plug first,1494 is the fan relay,It's in the right front of the engine compartment.Install the other sleeve with the slit on the downward facing side of the injector. 3. Confirm sleeve is flush to intake manifold surface around injector. 4. Check injector #3 wire and ensure that the injector is rotated to a 2 o'clock position. TSB for the cold start rough idle and P0303 code: TSB 18-010-01.Jeep grand cherokee p0155 code p1494 For the P0155 code, check the fuse for the O2 heater circuit. The P1494 has to do with the EVAP leak detection pump pressure switch.P1494 Jeep. By John Rony August 14, 2023 August 14, 2023. For those of you battling with the agonizing “p1494 jeep” engine light, rest assured, you are not alone. The P1494 code is a diagnostic trouble code (DTC) that is universally used to identify specific problems with your vehicle.If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V. P0138 Jeep Code - O2 Sensor 1/2 Circuit High.Trouble code P1391 usually pertains to an intermittent CMP/CKP signal, low input voltage to the glow plug or its circuit, or problems with a car's wheel speed/G-sensor. Its symptoms include an illuminated CEL, erratic engine performance, no-starts, and white exhaust fumes.The P1494 code is a code that has many different definitions, depending on the manufacturer. ... Chrysler, Dodge, Eagle, Jeep, Plymouth, Ram: Evaporative emission (EVAP) leak detection pump ...What mean p1494 on 97 Jeep Grand Cherokee limited? Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault. What are Codes p1494 p1495 voyager 1996?Scan a car and P1494 shows up. Disconnected battery, waited few minutes, connected again and back in business, light was gone; had to drive 100 or so miles to get all codes back to ready and that was it. Well, it started to show again, more often. I noticed there is a small play in ignition switch and looks like that is what is causing P1494.P1494 JEEP Description The Evaporative emissions system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, can allow vapors to escape into the atmosphere. The leak detection system tests for EVAP system leaks and blockage.P1494 JEEP Description The Evaporative emissions system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, can allow vapors to escape into the atmosphere. The leak detection system tests for EVAP system leaks and blockage.2002 JEEP GRAND CHEROKEE. 4.7L. V8. 4WD. AUTOMATIC. 160,000 MILES. My car is putting out the code p1494 (evap leak detection pump pressure switch condition). I replaced the Leak Detection Pump and The code came back. I cannot find any vacuum leaks in the lines going to and coming from the LDP.What is the Cost to Diagnose the Code P1494 Dodge? Labor: 1.0. The cost to diagnose the P1494 Dodge code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.The code came back as P1494 no definition, does anybody know what that cade means? in this thread in this sub-forum in the entire site. ... Advanced Search; Members; FAQ; Dark Mode Menu Log in Register Home. Forums. Models. Jeep Cherokee & Comanche Forums. XJ Cherokee Technical Forum. Engine Code. Jump to Latest Follow 1 - 5 of 5 Posts. D ...Mar 31, 2018 · During self-diagnostics, the Powertrain Control Module (PCM) first checks the Leak Detection Pump (LDP) for electrical and mechanical faults. If the first checks pass, the PCM then uses the LDP to seal the vent valve and pump air into the system to pressurize it. If a leak is present, the PCM will continue pumping the LDP to replace the air ... P1494: Evaporative emission (EVAP) leak detection pump -pressure switch: Wiring, hose leak/blockage, EVAP leak detection pump: P1495: Evaporative emission (EVAP) leak detection pump solenoid: Wiring open circuit/short circuit, hose leak/ blockage, EVAP leak detection pump solenoid: P1496: Engine control module (ECM) -5 volt output low: ECM: P1498This check engine light on my 99 JGC 4.0 came on after brake lines were replaced by Midas - code was p1494, an indication of a fault in the leak detection system-- turned out to be a disconnected vacuum hose from pump to engine at the engine side --- easiest fix so far on this jeep - and free. Reply. Save. Dalair · #6 · Nov 25, 2011.P1494 Leak detection pump switch or mechanical fault. This code you should check the vacuum hose going to the LDP switch rupture or disconnected vacuum hose, and hose blockage for this is the main cause for this code condition.Jeep has produced a TSB for this condition TSB # 18-27-98 Titled LDP Mil on DTC P1494, what this is about are partial vacuum hose blockage in the LDP pump.you are to ...What mean p1494 on 97 Jeep Grand Cherokee limited? Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault. What are Codes p1494 p1495 voyager 1996?1999 jeep cherokee. runs ok for about 40 minutes as long as no stop and go, then suddenly feels like its running out of gas. check engine light on. trouble codes p0353 p0352 p0351 91391 p1494 changed …To test vacuum lines, you'll need a tool like this. Here's an Amazon link for your convenience → http://www.amazon.com/gp/product/B00NP60URE/ref=as_li_qf_sp...1 answer. 2002 Jeep Liberty. 2002 Jeep Liberty. These are all related sensors and active devices of the evap system, clear the code and replace the fuel cap. 6. Jeep Liberty 2002 woahs ! by porth21 - 2/1/09 7:35 AM In reply to: Jeep Liberty 2002 speedometer not working by Dannywon. I have a 2002 Jeep Liberty Limited with the …Ran codes and got a P1494 LDP Pressure Switch, which seems to be some kind of emissions problem. I am also getting a hissing noise from the engine bay that I don't think was there before. ... Produced from 1997-2006, many consider the Jeep Wrangler TJ to be the last true Wrangler.Code p1494 grand laredo cherokee 2001. then uses the LD pump to seal the vent valve and pump air into the system to pressurize it. If a leak is present, the will continue pumping the LDP to replace the air that leaks out. The determines the size of the leak based on how fast/long it must pump the LDP as it tries to maintain pressure in the system.P1281 is a Diagnostic Trouble Code (DTC) that could mean an issue with your coolant level/mixture or an out-of-spec air-fuel ratio. Your engine coolant fails to reach normal operating temperatures while driving. For some vehicles, the DTC traces back to a problem with drivetrain sensors, fuel system components, or running too lean/rich. 2002 Jeep Grand Cherokee Obd Code P1494 Issues. My Car Is Putting Out The Code P1494 (evap Leak Detection Pump Pressure Switch Condition). I Replaced The Leak Detection Pump And The Code...Nov 12, 2008 · Trouble code P1494 my check engine light is on ,the code it spit out was p1494. a friend of mine looked up the code - Jeep 2002 Grand Cherokee question Search Fixya Press enter to search. P1494: replacement elbow size. Jump to Latest Follow. 4997 Views 3 Replies 3 Participants Last post by Ralph77 , Aug 31, 2015. T. Thechad1215 Discussion starter · Aug 19, 2015 (Edited) I've sprung the P1494 code, and I'm pretty sure I've isolated the problem to this elbow joint that was practically hanging off from being so rotted and loose.P1494 codes. Is it Diy or do i have to take it to the shop. - Jeep 2000 Grand Cherokee questionVocational, Technical or Tra... 26,201 satisfied customers. 1998 jeep grand cherokee: ltr..Leak..Mechanical Fault..oem. 1998 jeep grand cherokee 4.0 ltr code p1494 for Leak Detection Pump Switch or Mechanical Fault .... pump assy was replaced with oem pump … read more.Jan 4, 2017 · OBD II fault code P1494 is a manufacturer specific code that is defined by car makers Chrysler, Dodge, Jeep, and Plymouth as “EVAP Leak Detection Pump Pressure Switch Condition”, or sometimes as “Leak Detection Pump SW or Mechanical Fault”, or less often as “Mechanical Incorrect input state detected for the Leak Detection Fault Pump [LDP] Pressu... 2003 Jeep Liberty P1495 followed by P1682. Out of the blue on the way home from work, the check engine light (CEL) came on. Jeep didn't sound or run any differently. Of course it is state inspection time so I have to get it taken care of. Got home and checked the engine code and it was a P1495 (problem with the leak detection pump solenoid ...Torque Staff Report. This method is used to retrieve OBD I and OBD II diagnostic trouble codes from your YJ, TJ, XJ, ZJ, and early WJ Jeep models. Insert the key into the ignition. Turn the ignition On-Off-On-Off-On within 5 seconds. Record the 2-digit DTC as displayed by the flashing MIL.Diagnose Difficulty of Inspecting Get Additional Help Solenoids are components in your vehicle that convert electrical energy to movement. They generally help with movements of valves and...The P1494 code is in fact the leak detection pump. Its the little round thing near a green valve cover on the passenger fire wall. The FSM doesn't give me any more information on testing other than to replace it. Reply Savegetting a code p1494 - Jeep 2001 Wrangler question. kia ora Mark , greetings , sorry bro these code things are beyond me ive been driving around with a p0161. i believe its a bank2 down stream sensor for 2 years , maybe you can help me , 2002 grand cherokee 4.7 Ho , do you know what brand of sensor or part numbers i need , an idea of cost for same . i forgot to mention i am in New Zealand and ...TROUBLE SHOOTING P1495 CODE 04 GRAND CHAROKEE - Answered by a verified Jeep Mechanic. We use cookies to give you the best possible experience on our website. ... Grand cherokee: I need to know what trouble code p1494..jeep..laredo.Technician. High School or GED. 19,946 satisfied customers. I have a 2001 Jeep Grand Cherokee 2WD I6 - 4.0 L engine. I. I have a 2001 Jeep Grand Cherokee 2WD I6 - 4.0 L engine. I have a P1494 latched code (Pump leak detection pump switch or mechanical fault). … read more.UPDATE: Got the Jeep scanned this wknd, and the following codes were pulled: P0201 - Fuel Injector Circuit Condition (Cylinder #1) P0301 - Cylinder #1 misfire P1494 - EVAP Leakdetection pump pressure switch condition Lat year I had the injectors replaced when I got the same codes, and all was fine for about a year.oem number p1494 - Jeep 2002 Grand Cherokee question. Search Fixya. Browse Categories Answer Questions . 2002 Jeep Grand Cherokee; Jeep Grand Cherokee Car and Truck ... Question about 2002 Jeep Grand Cherokee. Open Question. Oem number p1494 - 2002 Jeep Grand Cherokee. Posted by Anonymous on Aug 07, 2013. Want Answer 0.A forum community dedicated to all jeep owners and enthusiasts. Come join the discussion about performance, engine swaps, modifications, classifieds, troubleshooting, maintenance, and more! Full Forum ListingFinally decided to fix the Check Engine Light issue. Again P1494: Failed Leak Detection Pump.Help support the channel: https://www.patreon.com/user?u=40326325The code came back as P1494 no definition, does anybody know what that cade means? in this thread in this sub-forum in the entire site. ... Advanced Search; Members; FAQ; Dark Mode Menu Log in Register Home. Forums. Models. Jeep Cherokee & Comanche Forums. XJ Cherokee Technical Forum. Engine Code. Jump to Latest Follow 1 - 5 of 5 Posts. D ...105 Answers. SOURCE: 2001 jeep cherokee has a p1494 code and a p0301. 0301 is cyclinder 1 miss fire,check coil pack and spark plug,plug first,1494 is the fan relay,It's in the right front of the engine compartment. Kind of behind and below the RF headlamp and in front of and below the fuse box. Easy to replace, just unplug it and plug the new ...Dec 5, 2017 · P. pondroski Discussion starter · Dec 5, 2017. I have been trying to diagnose what is causing the code p1494 to appear. According to the technical procedure it states first to check for vacuum at the leak detection pump. When I start the engine should the vacuum reading be present or does it change as the engine warms up. I have p1494 check engine light on, 2001 SE 2.5. I found 2 evap line hoses that run from the drivers side fender towards the engine block (I am guessing the throttle body). One was disconnected and another loose. Both have 90 degree elbows that are completely rotted (2 different sizes). I went to 3 parts stores today that did not have them.What is the Cost to Diagnose the Code P1494 Chrysler? Labor: 1.0. The cost to diagnose the P1494 Chrysler code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.Popular Answer. helpfull4u on June 26, 2012. The leak detection pump is usually not the only problem. Do yourself a favor, go to your favorite mechanic, have him check your codes and give you a free estimate for repairs. This will keep you from getting migrains in the future.What does the code P1494 means on my 99 jeep grand cherokee. LEAK DETECTION PUMP SYSTEMS (P1494, P0442, P0455, P0456), Read full answer. Jun 10, 2010 • 2001 Jeep Grand Cherokee. 0 helpful. 1 answer. 2003 Jeep Liberty. p0455 is evap control system no purge or large leakVocational, Technical or Tra... 26,201 satisfied customers. 1998 jeep grand cherokee: ltr..Leak..Mechanical Fault..oem. 1998 jeep grand cherokee 4.0 ltr code p1494 for Leak Detection Pump Switch or Mechanical Fault .... pump assy was replaced with oem pump … read more.P1494-Evap Leak Monitor Pinched Hose Found. Name of code: Leak Detection Pump Pressure Switch When Monitored: Immediately after a cold start, with ambient temperature between 40 degress F and 90 degress F and coolant temperature within 10 degrees F of ambient temperature. Set Condition: The state of the switch does not change when the solenoid is energized.P1494 Jeep EVAP Leak Detection Pump Pressure Switch Condition. P1494 Jeep EVAP Leak Detection Pump Pressure Switch... engine-codes.com. The Evaporative emissions system is... Posted on Feb 17, 2018. Helpful 0 ; Not Helpful; Comment; Flag 5 Related Answers Mike Butler. 6674 ...Sep 17, 2010 · 1 answer. 2002 Jeep Liberty. 2002 Jeep Liberty. These are all related sensors and active devices of the evap system, clear the code and replace the fuel cap. 6. Jeep Liberty 2002 woahs ! by porth21 - 2/1/09 7:35 AM In reply to: Jeep Liberty 2002 speedometer not working by Dannywon. I have a 2002 Jeep Liberty Limited with the same problem. . Sep 17, 2010 · 1 answer. 2002 Jeep Liberty. 2002I have a 1997 Jeep Wrangler 4.0L with engine code P1494, but the EV The first thing that I would do is verify that your gas cap is on good and tight. Reset the code (either with a code reader or disconnection of the battery). If the code comes back after checking the cap, then you may want to look at the filter and the pump. They are pretty simple on the ZJ. SOURCE: 2001 jeep cherokee has a p1494 cod P1494 Jeep EVAP Leak Detection Pump Pressure Switch Condition. Read full answer. Feb 17, 2018 • Jeep Grand Cherokee Cars & Trucks. 0 helpful. 1 answer.P1494 Jeep EVAP Leak Detection Pump Pressure Switch Condition. Read full answer. Feb 17, 2018 • Jeep Grand Cherokee Cars & Trucks. 4 helpful. 1 answer. 2000 jeep grand cherokee refrigerant capacity (R134a), any common leak points, O-rings etc. Capacity is aprrox 1.75 lbs with proper gauge (28 ozs). P1494 is the code for the leak detection pump and or system, which is ...

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