Stalling and rough idle problem.

300

Asked by Nov 09, 2011 at 08:50 PM about the 2002 Jeep Grand Cherokee Laredo 4WD

Question type: Maintenance & Repair

My 2002 Grand Cherokee 4.0l recently started  having rough idle problems. I did a tune up..changed the plugs.....replaced the coil rail.....air filter.....gas filter. The idle is still rough and now it stalls suddenly. It has stalled while I was highway driving.....sitting at a light...ect. It doesn't seem to be the fuel pump as I can hear it come on when I turn the key. Anyone have any ideas what it could be?

Thanks!

Dolfan

9 Answers

2,925

If you can HEAR the fuel pump, then that might be the issue. Normally fuel pumps get really noisy when they are beginning to fail. Due to clogged fuel filters the pump fails soon after. Replace both or get the fuel pressure checked at the fuel rails on the engine. Other possible issues could be crank sensor or intake MAF sensor. Wouldn't hurt to take some MAF sensor cleaner to it and also clean out your throttle bottle. I think there is a idle control sensor in the throttle body near the butterfly valve. Check that too.

3 out of 3 people think this is helpful.
300

Thanks Matt. I changed out my cranksaft postion sensor. I got the error code off the odometer and AutoZone said it was the sensor. I just swapped it out so we'll see if it stalls again. If not I'll look into the fuel pump. Thanks again. I'll let you know how it goes.

3 out of 3 people think this is helpful.
300

I have had no more stalling or rough idling so I guess it was the crankshaft sensor. Thanks again for the response Matt.

1 out of 1 people think this is helpful.
2,925

You're welcome.

1 out of 1 people think this is helpful.
70

I had a similar problem with my 2000; finally solved with new fuel filter. the fuel filter is also the fuel pressure regulator.

7 out of 7 people think this is helpful.
40

Just so I understand, on a 2002 jeep Cherokee the fuel pressure regulator is inside the fuel filter ???

4 out of 4 people think this is helpful.
40

My 2004 grand jeep stalls out when I stop at a light what could it be

4 out of 4 people think this is helpful.
20

Ive the same problem .. just changed the crank sensor .. Still stalls and no break and steering also freezes .. Its very dangerous .. Sbody pls help . Can it be the mass sensor ??

2 out of 2 people think this is helpful.
20

I have a 1988 jeep cherokee n it has a rough idle n a miss. It starts up fine n sometimes the rpms well stay at 3000 rpms. I sometimes have to turn the engine off n back on for the rpms to drop down to abt 1000. Then it wants to lug down while im driving on the highway then it picks back up again

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • jeep grand cherokee starting problem followed by rough idle and will not drive. 5 answers

    my jeep was running just fine since i bought it back in February, just today it started having problems starting, it would turn over a bit i would turn it off and then tried starting it a second tim...

    1999 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

  • how do i fix the timing/running/idle problem with my jeep? 9 answers

    its a straight 6 with a 4L engine. I got it to the drivable stage but the idle was really rough. thought it was a timing problem so me and my dad messed with the timing manically, he thinks it could n...

    1998 Jeep Grand Cherokee

    -

    Maintenance & Repair

  • 01 jeep GC stalls when idle and the fuel gage goes down?! 3 answers

    Hello everyone I have a 2001 Jeep Grand Cherokee and its been having some problems lately! So when im at stop light or stop signs or when I stop anywhere it just dies out of no were and when it stal...

    2001 Jeep Grand Cherokee Limited 4WD

    -

    Maintenance & Repair

  • Rough idle and little throttle response 4.0 inline 6. 1 answer

    Got gas at a marathon station, which I usually don't do, and then drove about 20 miles to school with no problems. After sitting in the parking lot ideling for about 20 mins it started to rough idl...

    2003 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

  • Why is my Jeep stalling when I'm coming to a stop or idling? 3 answers

    I've owned my jeep about a year and have never really had problems with it stalling on me until now. I've tired numerous things, but nothing seems to fix it. My engine light recently came on and ...

    2001 Jeep Grand Cherokee Laredo 4WD

    -

    General

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 72,637 nationwide Grand Cherokee listings starting at $950.

ZIP:

Search Jeep Grand Cherokee Questions

Jeep Grand Cherokee Experts

#1 inuevafreak
inuevafreak
Reputation 2,030
#2 Tom Demyan
Tom Demyan
Reputation 1,810
#3 thejeepdoctor
thejeepdoctor
Reputation 1,730
View All

Related Models For Sale

Used Jeep Cherokee
424 Great Deals out of 60,171 listings starting at $2,500
Used Jeep Wrangler
272 Great Deals out of 18,549 listings starting at $2,995
Used Ford Explorer
803 Great Deals out of 74,511 listings starting at $750
Used Toyota 4Runner
264 Great Deals out of 20,447 listings starting at $1,995
Used Dodge Durango
241 Great Deals out of 22,749 listings starting at $1,500
Used Chevrolet Tahoe
576 Great Deals out of 27,339 listings starting at $999
Used Ford F-150
2,238 Great Deals out of 208,514 listings starting at $1,499
Used Chevrolet Silverado 1500
1,767 Great Deals out of 166,158 listings starting at $1,950
Used BMW X5
432 Great Deals out of 16,356 listings starting at $2,000
Used Chevrolet Camaro
161 Great Deals out of 32,677 listings starting at $1,995
Used Ford Mustang
378 Great Deals out of 46,805 listings starting at $1,500
Used Jeep Liberty
231 Great Deals out of 7,234 listings starting at $990

Used Cars For Sale

2017 Jeep Grand Cherokee Laredo 4WD For Sale
6,265 listings starting at $26,550
2016 Jeep Grand Cherokee Laredo 4WD For Sale
20 Great Deals out of 958 listings starting at $22,819
2015 Jeep Grand Cherokee Laredo 4WD For Sale
20 Great Deals out of 737 listings starting at $19,299
2014 Jeep Grand Cherokee Laredo 4WD For Sale
32 Great Deals out of 1,108 listings starting at $15,900
2013 Jeep Grand Cherokee Laredo 4WD For Sale
11 Great Deals out of 500 listings starting at $10,999