Question about 2000 GMC Jimmy

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2000 gmc Jimmy misfiring

Runs good up to about 3000 RPM then starts to misfire put new cap, roter, plugs but still does it also when the motor get warm it starts to misfire around 2000 to 2500 RPMs

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  • Anonymous Mar 23, 2014

    Idles fine but real slugeish on power until it gets around 3000 rpms then you can feel it kick in and start picking up in power, only getting 11 mpg with 4.3 vortec



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Change fuel filter ,have inject. system cleaned

Posted on Mar 12, 2009


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1 Answer

My cylinder is misfiring on my 2000 gmc jimmy

replace fuel filter, air filter, spark plugs, wires, distributor cap /rotor, if you have one. new oil with your filter ? just thought I'd ask, have a auto parts store pull code to see why your service engine soon light is on. this will tell you what sensor needs replaced, I'll bet its the oxygen sensor !

Feb 23, 2013 | 2000 GMC Jimmy

2 Answers

I have a 2000 gmc jimmy with a service engine soon light. i received the code p0302 misfire detected cylinder 2.I replaced spark plugs and distributor cap and rotor. but still on. any other suggestion?

Well, Spark Plugs wear over time,seldom fail to fire
A worn or dirty rotor and cap will still fire, also

You never throw new wires at it,I don't,mine last 18 years,
on all vehicles

You need some OBD2 knowledge,start studying

The PO302,last # is the cylinder
Number 2 is misfiring

If you got individual coils, go there
If you got an ignition module, for all the cyl,go there
If you got plug wires,there is an extremely odd chance, one burned out inside ,on #2
& you did say your have a dist cap.

So you do have a cylinder monitor,that detected it
That may be the crank sensor,another possible

Need to know the system and how to test it.

You need to give veh specifics ,not just a year

Dec 01, 2010 | 2000 GMC Jimmy

1 Answer

I have a 98 gmc yukon that is misfiring on cyclinder 1.

assume still misfiring?
have u checked the fuel injector????

Apr 16, 2010 | 2003 Volkswagen Beetle TDI

2 Answers

My jimmy wont start when it rains as soon as it stops raining and dries out it starts ireplaced cap and roter 3 times and keep getting the same out come

What you can do is put water in a spray bottle and spray the plug wires and coil down and see if it will act up.Hope this helps.Good luck.

Mar 15, 2010 | 2000 GMC Jimmy

1 Answer

Changed plugs wier roter and cap still number 3 plug misfires

Well i would double check the plug we all know these are a pain in the **** to put plugs in it possible that one got cracked. Also have you ever replaced the intake gaskets ? or any fuel in jection parts ? regulator or popets/injectors

Jan 18, 2009 | 1997 GMC Jimmy

1 Answer

My 2000 gmc van misfires in rainy weather then clears up.

Check the inside of your distributer cap, moisture will cause major problems. Start your jimmy and run water over and around your distributer, after awhile turn it off remove the cap and feel the inside for might not be sealing right.

Dec 27, 2008 | 1994 GMC Jimmy

2 Answers


I have same problem with my 2003 Dodge Grand Caravan.
I just read this article below, hope it will help you.. m-misfire/

Jun 26, 2008 | 1997 GMC Jimmy

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