Question about 2002 Jeep Grand Cherokee

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My engine seems to skipping?

At idle it feels like the engine is skipping or misfiring? How do I check the lack of a smooth idle?

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Check the condition of the spark plugs and high tension (spark plug wires) leads.

Posted on Nov 04, 2012

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2002 rodeo, starts and when put on gear stalls


Automatic transmission ??
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Why does my vehicle stall when at idle.


Intermittin Engine Stall
Engine No Start
Missfire
MISFIRE IN motor cylinder is more likely the cause to engine stall and hard start.
You will have to fix this problem first,
A misfire, most the time, is caused by, incorrect cylinder firing order (diagram at bottom). Or no or low cylinder compression
no or low compression is the result of A Vacumm leak.
If the timing chain was recently replaced, the valve cover had to be removed, the valve cover gasket could cause a huge vacumm leak which would effect some if not all 6 cylinders,

Symptoms
Lack/loss of power
Hard start
Engine hesitation

For Now
check firing order( coil pack to sparkplug)
check sparkplugs

NISSAN 3.5 V-6 FIRING ORDER
SPARK PLUG GAP 0.050''
SPARK PLUG TORQUE
COIL PACK LAYOUT
3_5-h-dqdssqkoffgbcnef4yme1fk4-1-2.jpg

I hope this helps for now
If you have any questions, you can email or post back
Jtobias1020@gmail.com

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Hi. I have a 99 camaro 3.8l and I'm having some


Sounds like a fuel problem,You did the coils,plug wires and sparkplugs, that should of taken care of the misfire,You may have a EGR that stay open and doesnt close properly and it doesnt set a code why the ECM compensate for the false air.Now this causes rough idle,and smooth cruise with no misfire until you get to stop or idle speed.The map sensor this can also fail when warm especially if the vacuum it is suppose to get is not met. And a failing MAP causes a lack of power. A TPS failing causes a stumble and lack of power but no misfire.cansmo_184.gif

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My check engine light is flashing, the car runs rough until I get up to about 30mph and it is running through gas like crazy


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Engine skipping/misfiring, engine light flashing


Drive it into a dark place, or wait till dark. When it's running poorly, see if you can see any spark flying around. It sounds like plug wires.

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