Thanks for holding, Bruce. 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 …Imagine cruising down the open road, the wind in your hair and the sun shining down. Suddenly, your engine light flickers on, illuminating the dashboard with worry. What could be wrong with your…Code P1391 for 2001 Jeep Grand Cherokee 4.0 engine. 4.0 Liter engine, automatic 4x4, have long crank before start, other codes set are P1494, P1282, P0340, P0351, Po352, P0353. Car has 206,500 miles on it, have owned since 60,000 miles, good maintenance, scan tool shows timing varing from 0 by -1 up to + 3.Jeep Wrangler Forums. TJ Wrangler Technical Forum. P1494 Help! Jump to Latest Follow 1 - 11 of 11 Posts. G. garrettshultz94 ...failed smog the reading shows data trouble codes p1494 my check engine light is not on. - Jeep 1997 Grand Cherokee questionp1494 jeep fault pump jeep liberty manuals po420 jeep liberty how to check ldp liberty pump 1,062 views . Ask a Question. Usually answered in minutes! Expand. Popular Questions. Firing order diagram 02 jeep liberty 3.7L. 2002 Jeep Liberty. I need a 2007 fuse diagram for a jeep liberty ...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) …99 grand cherokee 2wd 4.0l code P1494. Bench test the LDP and can hear and feel the switch respond, but how do you test - Answered by a verified Jeep Mechanic. We use cookies to give you the best possible experience on our website.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. 1999 Jeep Grand Cherokee What is p1494? Trouble code P1494 means: Leak detection pump pressure switch or mechanical fault. What are Codes p1494 p1495 voyager 1996?Jeep Cherokee Stock Technical Forum. Help with codes P1494 and P0300. 4329 Views 2 Replies 3 Participants Last post by Mudderoy, Jan 5, 2009 Jump ... P1494: Leak detection pump switch does not respond to input P0300: Multiple cylinder mis-fire. Yes, I work in racing. No, I can't get you tickets.Produced from 1997-2006, many consider the Jeep Wrangler TJ to be the last true Wrangler. I started Jeep Wrangler TJ Forum to serve as a resource for TJ owners around the world. Here you'll find a treasure trove of knowledge amongst some of the most knowledgable minds in the TJ community.If you’re in the market for a Jeep and looking to buy one from a private owner, there are some common mistakes to avoid. While purchasing a Jeep from a private seller can often lead to great deals, it’s important to be cautious and take the...Trouble code P1494. These are all related sensors and active devices of the evap system, clear the code and replace the fuel cap. Read full answer. Nov 08, 2008 • 2002 Jeep Grand Cherokee.P1494 Jeep EVAP Leak Detection Pump Pressure Switch Condition. Read full answer. Feb 17, 2018 • Jeep Grand Cherokee Cars & Trucks. 3 helpful. 2 answers. Check engine light is on, and OT sensor code is P1494 was diagnosed. P1494 - LEAK DETECTION PUMP SWITCH OR MECHANICAL FAULT .Experience Jeep Forum on the new Fora Communities app for iOS & Android! Get the best of Jeep Forum on our official app. WJ Help- P1495 LDP Solenoid Circuit ... This could result in the LDP reed switch being open when the key is turned to 9ON9 and a P1494 fault could be set because the PCM is expecting the reed switch to be closed.ZJ Limited. 17970 Answers. SOURCE: code P1494. DTC P1494 - Leak Detection Pump Switch or Mechanical Fault. The causes are possibly an open or shorted switch sense circuit, a pump switch failure, or an open "fused ignition switch" output. First off, a model year 2001 is will still covered under the emissions warranty.P1494 is a code for the EVAP system that detects leaks and blockage in the engine. The code can indicate a faulty leak detection pump, a low engine light, or fuel odor. Learn …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 ...Scottj01 · #5 · Oct 10, 2011. This 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.Aug 11, 2011 · Vocational, 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. The Jeep Grand Cherokee is a mid-size luxury SUV produced by the American manufacturer Jeep. While some other SUVs were manufactured with body-on-frame construction, the Jeep Grand Cherokee has always used a unibody chassis. 162 Questions View all . larry lambert @lwlambert. Rep: 47 ...SOURCE: code P1494. DTC P1494 - Leak Detection Pump Switch or Mechanical Fault The causes are possibly an open or shorted switch sense circuit, a pump switch failure, or an open "fused ignition switch" output. First off, a model year 2001 is will still covered under the emissions warranty. That's federal law.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 …Nov 11, 2015 · Well, like the title says I'm getting the dreaded P1495 code but my 1999 TJ doesn't even have a LDP. It's a 4.0 on a Sahara with standard tranny. According to all the posts, pictures, manuals, etc. that I have looked at, the LDP should be right in front of the canister filter. All I have is the surge solenoid and the canister filter. 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.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:It was sitting for awhile and now has a P1494 and P1495 code - Answered by a verified Jeep Mechanic We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them.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.Symptom: P-1494 LEAK DETECT PUMP SW OR MECHANICAL FAULT. When Monitored and Set Condition: P-1494 LEAK DETECT PUMP SW OR MECHANICAL FAULT. When Monitored: Immediately after a cold start, with battery/ambient temperature. between 40 deg. F and 90 deg. F and coolant temperature within 10 deg. F of battery/. ambient.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. P0108 is a generic OBD-II trouble code. It indicates your Jeep Cherokee's MAP (manifold absolute pressure) sensor's voltage reading is outside of the normal operating range. The voltage is too high. It's most commonly caused by a bad MAP sensor, wiring issue, or vacuum leak. The MAP sensor measures the air pressure coming into.Hey all. I'm not sure if I'm going down the right path, or just deeper in a rabbit hole. My son's 2004 TJ I6 80k miles is having power loss. When driving it seems to struggle getting to higher rpms and can't get much faster than 55mph without a hill and tailwind in 4th, decelerates in 5th...Feb 19, 2014 · 17989 Answers. SOURCE: code P1494. DTC P1494 - Leak Detection Pump Switch or Mechanical Fault. The causes are possibly an open or shorted switch sense circuit, a pump switch failure, or an open "fused ignition switch" output. First off, a model year 2001 is will still covered under the emissions warranty. Labor: 1.0. The cost to diagnose the P1297 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. Search for P1297 Jeep Questions and Answers: Search here →.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 ListingCheck engine light came on code P0505, P0135, P0155, P1494. 2002 Jeep Grand Cherokee; Open Questions: 0 answers. Main fuse location Jeep Grand Cherokee 1999. Read full answer. Be the first to answer Aug 14, 2019 …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...P 1594 every thing normal, and have serched. Take your multimeter and put it on the battery terminals with the engine running. If the reading is between 13.5 to 14.8 volts alternator is ok. If it reads higher like 15 to 16 volts, the alternator is overcharging the battery. Also check the battery temperature sensor under the battery.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 ...Hold the connector of the solenoid to prevent the solenoid body from turning, and remove the hydraulic fan solenoid from the hydraulic fan module. Immediately install the new hydraulic fan solenoid. Lower the vehicle. Verify the fluid level in the power steering reservoir. Top off the fluid level as necessary.Sakoe · #14 · Jul 30, 2022. I got a lemon jeep I’M DONE, 07 grand Cherokee 4.7,, misfire 2 cilinder, checked grounds, new plugs, new ignition coils, new fuel injectors, compression leak passed, fuel pressure passed, new O2 sensors, gas pump good, I give up, $3500 take it asap obo. Don’t have time for this headache.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. 9 helpful. 1 answer.Aug 25, 2019 · Labor: 1.0. To diagnose the P1494 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour. Vehicle: 2003 Jeep Grand Cherokee jeep; grand-cherokee; p0123; 1 Answer. 0 votes . answered Jan 9, 2018 by Reynaldo (12.6k points) Best answer. P0123 Throttle position sensor #1 voltage high ... 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; 37 ...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 carbon gasket tends to deteriorate faster. Read more on how to diagnose an exhaust manifold leak. 3. Oil Leak. Rear main seal and oil pan: common place for oil leak problems on the 4.0 L engine in the 1984 to 2001 Jeep Cherokee.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? asked Jul 26, 2017 by anonymous. jeep; grand-cherokee; p0080; 0 votes. 1 answer 254 views. 1998 Jeep Grand Cherokee 4.0L with code p0748, do the related components for this code?I have a 2003 jeep liberty limited edition. The check engine light came on. I took it to have a diagnostic and came back with 2 codes P1294 and P1494 ... P1494 SPCUT Solenoid Circuit Malfunction-----NEXIQ 125032. Read full answer. Dec 03, 2012 • Jeep Liberty Cars & Trucks. 0 helpful. 2 answers. My 2000 Dakota, 4.7 l, tends to idle too low ...Hold the connector of the solenoid to prevent the solenoid body from turning, and remove the hydraulic fan solenoid from the hydraulic fan module. Immediately install the new hydraulic fan solenoid. Lower the vehicle. Verify the fluid level in the power steering reservoir. Top off the fluid level as necessary.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. ...Jeep liberty P1494 fault on 2002 liberty 3.7L pump pressure P1494 fault on 2002 liberty 3.7L pump pressure switch /mechanical fault, how do I determine or isolate the problem … read moreP1494 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.1998-2006 Jeep TJ Diagnostic Codes. If you're having a check engine light in your 1998-2006 TJ, here is a list of codes that will help you find out what the problem is. ... P1494 (M) Leak Detection Pump Sw or Mechanical Fault: Incorrect input state detected for the Leak Detection Pump (LDP) pressure switch. P1495: Leak Detection Pump Solenoid ...The video focuses on the basic Jeep specific diagnostic error code.Contents:0:21 Basic DTC analysis according to OBD2 protocol standard.1:48 Insight into pro...According to the factory service info the P1494 can be cause by: "low vacuum supply" to the LDP "LDP switch sense circuit shorted to ground" "LDP switch sense …The engine coolant temperature is monitored with the engine running. The Diagnostic Trouble Code (DTC) will be set in Powertrain Control Module ( PCM) memory when PCM senses engine coolant temperature does not reach 176°F (80°C) while driving for 20 minutes after the start. P1281 Jeep Code - Engine Is Cold Too Long.p1494 jeep fault pump jeep liberty manuals po420 jeep liberty how to check ldp liberty pump 1,062 views . Ask a Question. Usually answered in minutes! Expand. Popular Questions. Firing order diagram 02 jeep liberty 3.7L. 2002 Jeep Liberty. I need a 2007 fuse diagram for a jeep liberty ...Mar 10, 2013 · 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.sorry it took so long, here are the codes p0305 cyl 5 misfire p0442 p1281 low engine temp, just replaced thermostat p1494. ... In the past 2 weeks, my 2001 jeep grand cherokee has started to sound like it is 'working too hard' in the higher gears and especially when at highway speeds.JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. 2001 Dodge Ram PU 5.2 L - Check engine light code P1494 Leak detection pump switch or mechanical fault. Where is this - Answered by a verified Dodge Mechanic.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.Check engine light came on code P0505, P0135, P0155, P1494. 2002 Jeep Grand Cherokee; Open Questions: 0 answers. Need radio code Chrysler corporation part no. P04858513AG-A date code 0569 supplier 17719A S/N TQ1AA056918661. Read full answer. Be the first to answer May 10, 2016 • 1999 Jeep Grand Cherokee.Labor: 1.0. The cost to diagnose the P1694 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. Search for P1694 Jeep Questions and Answers: Search here →. 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 …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.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 …P1494 on 2003 jeep liberty. that code is manufacturer auxiliary control emissions control Read full answer. Oct 13, 2012 • Cars & Trucks. 1 helpful. 1 answer. Code p1407 manufacturer controlled auxiliary emission controls malfunction is coming up. My list says code 1407 is no flow for the EGR valve.1999 jeep cherokee. just bought it. was idling low and check engine light came on today. shows code p1494. research shows it could be Leak Detection Pump Sw or Mechanical Fault. I am debating on wheth …1999 Jeep Grand Cherokee 4.0L with P1494 code, how to repair? asked May 9, 2017 by anonymous. jeep; grand-cherokee; p1494; 0 votes. 1 answer 371 views.Modern versions of the Jeep include the Grand Cherokee, Wrangler, Compass, Patriot and Renegade. There have been many different model types of Jeep produced since its invention during World War II.Reply Save Jerry Bransford Premium Member · #3 · Mar 15, 2015 Locking gas caps, even when new, are notorious for leaking air through the key slot that trips the evap leak detector. Are you running an aftermarket locking cap? If so, I'd try a standard non-locking Mopar gas cap. -When you have a choice, buy American. Reply SaveP. 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.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 ...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.Hey i have a 2000 cherokee 4.0l 4x4 and the jeep seems to be fine i haven't noticed anything wrong except the check enigine light on. So it came on when i started it up this morning. I went to auto zone and got the code pulled and now the check engine light isn't there it hasnt come back i have driven it three times since erasing the code.2001 JEEP. 6 CYL. 2WD. AUTOMATIC. 76,000 MILES. I have a 2001 Jeep Grand Cherokee and my engine light is on. I would like to know what (P1494 manufacture control auxilary emission control) means, and what I need to do to fix this problem. Thanks. SPONSORED LINKS.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 …2004 Wrangler Unlimited throws P1494 on starting. When the Jeep is cold it throws a pending P1494 code immediately. I then shut off the engine, key on , clear the code, start the engine and check for the pending code, and it is back. If I let the readiness test complete the check engine light comes on with the p1494.May 25, 2018 · This video will show how I fixed the evaporator leak on a 2001 Jeep Grand , Check engine light came on; code p1494. When I googled it, th, A forum community dedicated to all jeep owners and enthusiast, Feb 17, 2018 · Trouble codes on 2003 Jeep Liberty Renegade 3.7, P0325 & P1494 codes popped up. Mechanic's Assistant: My old Jeep sounds like a steam radiator sometimes. , 105 Answers. SOURCE: 2001 jeep cherokee has a p1494 code and a p0301. 0301 is cyclinder 1 miss fire,check coil pack an, Specifically, p1494 jeep refers to a Leak Detection Pump (LDP) issue that manifests as a switch or mechanical, Connected up OBD code reader and got a P1494 code... Transl, P1494 JEEP Description The Evaporative emissions system is de, I have a 2001 jeep Cherokee sport. The check engine code is, P1494 Jeep EVAP Leak Detection Pump Pressure Switch Cond, P1494 Jeep EVAP Leak Detection Pump Pressure Switch Condition. , =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=, My Jeep is a 2000 Wrangler 4.0 What should I do now,, 1999 Jeep Grand Cherokee What is p1494? Trouble co, What does the code P1494 means on my 99 jeep grand cherokee. LEAK DET, This video will show how I fixed the evaporator leak on a 2, What is engine code P1684,P1495,P1494 - 2002 Jeep L.