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2001 jeep Cherokee sport. Leak evap pump is ticking, is there something wrong?

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  • Jeep Master
  • 20,706 Answers

You said leak why?
please post a full clear question.

or say what make you thing xxxx is leaking and leaking what?

Posted on Apr 24, 2015

  • _-__-___-_
    _-__-___-_ Apr 24, 2015

    did you scan it? yet, do so. if its scans ok, the be happy. or if something makes noise, and its bothersome get it check by real MECHanics.. or post a video or sound recording and post that ,as we area blind and deaf here. (and hands free)

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Posted on Jan 02, 2017

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2 Answers

Error codes p0442 and po445


Po442 is evap system leak
check intake and all vacuum hoses for leaks
check evap canister and purge valve
Po445 is evap canister purge valve short circuit
check wiring and connection

Apr 16, 2016 | 2002 Jeep Grand Cherokee Limited

1 Answer

What would it cost to replace the hoses on EVAP on 2003 Jeep Gr. Cherokee on canister


they can look cracked on the out side but not be leaking.You need to do a leak down test of your complete system.If your lite is coming on and you had it checked and it says small leak or large leak it is most likely the small vacume pump or diaphram in the evap system.they get stuck and just leak over time.my 2001 grand cherokee does this from time to time.I just went on ebay and bought the cheapest code reader i could find $20.00 and free ship.I just erase it when my check engine light comes on.

Feb 16, 2013 | Cars & Trucks

1 Answer

Code p1494 grand laredo cherokee 2001


Here is the definition.
You'll need a shop manual for the procedures.

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 Leak Detection Pump (LDP) for electrical and mechanical faults. If the first checks pass, the PCM 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 PCM will continue pumping the LDP to replace the air that leaks out. The PCM 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.
Read more: http://engine-codes.com/p1494_jeep.html#ixzz2JDPIwqxm

Jan 27, 2013 | 2001 Jeep Grand Cherokee

1 Answer

Little llight in the shape of an engine came on ,,, i have a 2001 Jeep Cherokee Sport ,,, and no owners manual


That is your check engine light. It signals that your jeep needs service, that something is wrong with your vehicle. Have it checked.

Feb 06, 2011 | 2001 Jeep Cherokee

2 Answers

My 2001 Jeep has evap leak codes p0455 and p0442, it has been smoke tested and there were no leaks found, but the codes are still there any ideas


I do not know the codes but after a smoke test ,I would use the codes and a schematic to walk down and test every switch or valve in the EVAP System. A professional scanner would be nice,so you could command somethings on and off.

Mar 12, 2010 | 2001 Jeep Grand Cherokee

1 Answer

2003 Jeep Grand Cherokee Laredo - Code P0456 EVAP leak


open hood and ck for broken vacuum hoses going to the purge valve(2 vacuum ports and a wiring connector)
on the drivers side between airbox and firewall
if good remove driver side rear tire and inspect hoses next to the gas tank and 3rd, the canister is in that wheel well also insp for cracked hoses there also, been working for jeep 12 years i charged people about 1 hour to correct this probem.

Dec 18, 2009 | 2003 Jeep Grand Cherokee

1 Answer

I got a 2001 cherokee sport with the check engine light on, according with the mechanic is something related to the gas cap but I already change it and the light wont come off


if it is an evap code,yes a loose or faulty cap could cause the light,but you also need to check the evap
for broken lines or valve

Dec 03, 2009 | 2001 Jeep Cherokee

2 Answers

Engine light on with code 1494runs ok for now but light want stay off when i have it taken off, was told it was sensor to motor, but that there was four different ones and they don't know which one it...


P1494 means Leak Detection Pump Switch or Mechanical Fault - This code appears when there's an issue with the EVAP System (fuel tank fumes) This can be caused by a improperly secured gas cap, faulty gas cap, crack in the vacuum line, etc.

Sep 17, 2009 | 2001 Jeep Grand Cherokee

1 Answer

2001 JEEP CHEROKEE SPORT


it will be ok to run for a while. i think what the tech was telling you is the evaprative emissions system leak detection pump may have gone bad. the light will remain on til the system is repaired

Jan 01, 2009 | 2001 Jeep Cherokee

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