Occasional studder
 

Hey all,
Hope your all having a good day.

I have an intermittent problem with my jeep, it sometimes will studder (that is rough idle for a moment down to like 200 rpm). This will happen sometimes while waiting at a light.
Also it sometimes happens while doing like 80 on the highway. Where you will have lack of power, then it will go away. I have floored it on occasion at 80 and i hear a knocking sound coming from the engine. Then after a moment or two, full acceleration. And then the problem goes away. I have cleaned the Iac motor in the past which fixed the problem, but now that is clean and this problem is still happening sometimes.
Very annoying. Can anyone help.

:ohwell:

Re: Occasional studder
 

Seriouslly, this is Bull ****,
Not one person can help.
Thats laughable.
I joined this forum because i thought there would be other
jeep owners that might have a similar problem.
Thanks for nothing.

Lance Chenkaluk

Re: Occasional studder
 

Easy Tiger....this is a small community, not everyone may have experienced the same problem or know of a solution, it may take several days for anyone to even look at your post....take a deep breath.

I would guess either your IAC or TPS is on its way out....

Re: Occasional studder
 

What engine do you have in your GC?

Re: Occasional studder
 

The 4.0 inline 6

This problem has lessened since i last posted the message but it still comes up
here and there.
It hasn't stalled at any occassion yet.
Frankly, I have never seen anything so absurdly difficult to diagnose.
Im planning on taking it to a mechanic for a tune up.

Thanks for responding.

Re: Occasional studder
 

I have no problems accellerating at full throttle when the problem isn't bugging the engine.

I have considered the Crankshaft positioning sensor but it runs fine decent most of the time.
Damn odd.


Sorry for being so grumpy in earlier posts. I just drives me crazy.

Lance.

Re: Occasional studder
 

Was going to suggest the CPS, my 4L does it occasionally to, usually when I've been sitting idling for awhile.
May be a wire that is getting worn near the sensor.

Re: Occasional studder
 

Maybe you should leave this forum.

Re: Occasional studder
 

ulric,
The guy apologized already. You've never been frustrated? I vote he stays.
Peter

Re: Occasional studder
 

Wow! That's a little harsh ulric