Question about 2003 Jeep Liberty

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Engine light on, stalls out, slow accel, uneven

Jeep liberty 0., engine light on, stalls out at low rpm, slow accel, uneven revs. at constant speed, engine revs and jumps.

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The ignition timing is off.
The ECM (Elctronic Control Module) is responsible for that.
Take the Liberty to AutoZone to have them scan the PCM code (free) and ask for an explanation print-out (also free). You might want them to clear the error code afterwards, too (yes, free).
Let us know what the codes are and a summary of the print-out.

Posted on Oct 01, 2009

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Posted on Jan 02, 2017

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1 Answer

Have a 2006 jeep liberty that idles up and down and can die. However with the air in cab completely off it idles and runs fine. The air being on is the trigger. Any thoughts to how I can fix this?


Try cleaning the throttle body and throttle plate. Next is the idle air control passage, pintle and seat. If all that fails, look for vacuum leaks which can be crucial at idle where fuel is light and any leak will cause a lean mixture and stalling, especially with AC on and the vehicle in drive usually.

The idle air control valve (IAC) is designed to increase the idle speed when the AC compressor kicks in to prevent the engine from slowing to stall RPM. It also keeps the engine from run-on or dieseling when the car is shut off.

Jan 22, 2016 | Jeep Cars & Trucks

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Why it stalls at stops and low speeds


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1 Answer

Stalling when turn back on


all stalls end in CEL check engine light on. that is normal
but CEL glow. when engine running , means you had a failure, and it stored DTC error codes, so scan it.
lots of causes. huge list.
get a tune up , tops list.

SCAN it to be sure all sensors work. running.
all fuses in car good.
by stalls , i assume the engine stalls and engine RPM is 0 RPM.
the stall cause the whole dash to light up, all the warning lamps come
on (self test) oil , charge , CEL. come on.
what is important is the stall and the cause.

i will tell you the 3 ways.
lost electrical power to engine EFI system (seems not)
bad engine, (lost compression hot)?
bad spark , spark died.?
bad fueling, lost all fueling (starves and stalls or floods and misfires horribly and stalls (black spark plug tips are big time clue)

if non eof the rings a bell.?
get the car serviced.

this car is newer nicer car, you (we) can scan and drive and log data.
allowing faster easy diagnosis.

Mar 12, 2014 | 2004 Jeep Liberty

1 Answer

2002 Jeep Liberty Sport with the 2.4L (manual Tran.) Speedometer stopped working, Check engine is on, and now it's stalling between shifting and at low rpm.


Speedometer cable may have broken. You can't tell from the outside of the cable, since it has a plastic shield. You have to disconnect it from the transmission to check it. If you can turn the cable inside the shield easily, it is broken.

Apr 30, 2012 | 2002 Jeep Liberty

1 Answer

Jeep liberty 2002 3.7when starting cold starts-stalls unitl hot


Check the temperature sensor feeding the ECU and O2 sensor.

Apr 12, 2010 | 2002 Jeep Liberty

3 Answers

Engine cutting out when idling or slowing down


Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake

Jun 18, 2009 | 2004 Renault 181

1 Answer

JEEP CHEROKEE 2005 CRD


Was the vehicle a previously rental vehicle? because if it was there is probably a speed govenor on it or a rpm govenor on it most likely a speed govenor if a previous rental vehicle

Nov 05, 2008 | 2005 Jeep Liberty

1 Answer

1998 Holden Rodeo TR series 5-speed manual 2WD


run the fault codes
look for ambient temp sensor or baro sensor problems

Jun 30, 2017 | 1992 Isuzu Rodeo

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