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Unread 01-26-2006, 06:46 PM   #1
Tri_X_Troll
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1986 MJ Comanche 
 
Join Date: Mar 2004
Location: Lebanon, Ohio
Posts: 569
engine or tranny???

I've got a 4cyl mated to the three speed automatic in my jeep and I've been experiencing some problems lately. The transmission has had problems before, but I'm not completly sure it's a transmission problem.

What happens is if I'm sitting at a red light or something and feather the gas enough to make the jeep roll forward in drive it'll drop down to like 200 RPM's and act like it's trying to stall, as soon as my foot leaves the gas. It'll last a few seconds and the rpms will stabilze. The absolute only time that I can replicate this is when the jeep is in first gear. I'm thinking if it was the tranny, it'd outright stall as soon as I dropped it into drive at an idle. The part of me that makes me think it's the tranny is that it feels just like the CJ does when I used stall it trying to shift gears on the three speed.

Well, I suppose it does do one other thing, if I get on it real hard from a standstill the jeep will shimmy off the line, but I think that might be suspension related.

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Last edited by Tri_X_Troll; 01-26-2006 at 07:11 PM..
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Unread 01-27-2006, 11:23 PM   #2
gumcrew2
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1991 XJ Cherokee 
 
Join Date: Oct 2004
Location: Denver, CO
Posts: 1,184
Sounds engine related. I had a "similar" situation, if I took my foot off the gas real quick (5 speed, but it didn't matter if I was in gear or not) the engine would drop to like 50 rpms for a few seconds then come back up. Ended up being the fuel pressure regulator and the fuel pump.
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Unread 01-28-2006, 12:55 AM   #3
ScotZ
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2004 WJ 
 
Join Date: Jul 2002
Location: Cincinnati, OH
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Possible TPS (throttle position sensor)also. Other than the situation you described does the Jeep drive OK?
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