Question about 2004 Jeep Grand Cherokee

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My 2004 jeep grand cherokee has 36000 miles and has loss of power,and idles a little rough. Do u have any suggestions on where to start loking for the problem? Thanks

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Hi 6cly 2004 jeep idles at 500 rpms

Posted on Jun 09, 2010

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If you havent changed the spark plugs, id start there.

Posted on Jul 07, 2009

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1 Answer

2004 jeep cherokee overland when shifting from park to drive loud noise and idle is running rough


find noise location first. never ignore noise on machines. and 10x that on man movers. 100x that in the air.

then scan it. using any obd2 scan tool,
a tool that does Jeep factory codes. 10x that.

Apr 06, 2014 | 2004 Jeep Grand Cherokee

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1999 Jeep Grand Cherokee Laredo 8Cyl4.7L When when driving over 50 miles per hour will lose all power whats wrong?


When you say it loses power, do you mean electrical power or engine power ?
You would need to look at the fuse boxes for a loss of electrical power, and use a scanner or code reader to check the computer for trouble codes for a loss of engine power.

Sep 18, 2012 | 1999 Jeep Grand Cherokee

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I have a 2004 Jeep Grand Cherokee Laredo 4x4 with the 4.0L. It has approximately 150k miles on it. I started the Jeep with 1/4 tank of fuel in it and it started rough and acted like it was going to die....


long post.
ill reduce it for you.
misfires. (is RPM below 700 then misfire can be normal) for idle speed controls dead.
ISC the isc controls speed, of idle,.
mine stuck like zillion times, in 400k miles. endless.sticking
mine was a tiny gutless stepper motor drive ISC valve.
the cone valve is side gets nasty and sticks (
(PCV gases caused as seen on all engines)
i clean it.
the proof is the easy press of right foot easy raises idle back to 700rpm and engine stops misfiring.
ever get a tuneup this decade or running spark parts 500,0000 miles
for the new world record.?


now the tricky part of ISC, , fully explained in the SM serv. man.
the PCM learns its behaviors.
it learns all hot start settings and cold
so when you key on, it goes to the correct HISTORICAL spot.
if it can move there(sticks) engine car race.
or run too slow,
cold start would be worse, as hot isc is more closed
so if sticks there closed, the next cold start will be horrid
some newer manuals telly you to add 5% throttle if car is hard starting this is so common.

clean it. end story.
ISC

Mar 09, 2017 | 2004 Jeep Grand Cherokee

1 Answer

I have a 2004 Jeep Grand Cherokee Laredo V6. When accelerating, the engine starts to make a noise, similar to hamsters/squirrels. It's not that loud at first. The noise stops when I take my foot off the...


it sounds to me like you have inferior gas in the tank, or some water has gotten in your fuel. you may be able to add a little denatured alcohol to the gas and it may burn off the water. good luck

Nov 30, 2010 | 2004 Jeep Grand Cherokee

1 Answer

Very rough idle on 2002 Jeep Grand Cherokee Limited Edition V8


If you haven't changed the plugs or had the fuel system cleaned, now would be a good time to do it. The number 1 culprit for rough idles is dirty injectors or plugs. You can try an injector cleaner in a can (or bottle) for under $10 and see if it helps, and then work from there. If there isn't any improvement then if you are able to, check the plugs for any gunky buildup and if you find a bad plug, make sure you replace them all (or have them replaced) at the same time.

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1 Answer

I have a 1994 Jeep Cherokee, V6. It idles rough and It has power loss when I hit the gas. It eventually gets going but studers.


When was the last time this engine had a tune-up? Is the check engine light on? If so, reading the codes will get you looking in the right places. It sounds like it is missing badly.

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1 Answer

Slight miss, starts a little hard then runs fine rough idle from time to time


It sounds like its out of time move the distriutor a little bit

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2 Answers

2003 Jeep Grand Cherokee Runs Rough


It sounds like a few different things or a combination of more than one.

  1. The EGR valve
  2. The catalytic converter
  3. The mass airflow sensor

May 09, 2009 | 1998 Jeep Cherokee

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