Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: Falco on March 15, 2006, 08:54:51 AM

Title: Intermittent Engine Problem
Post by: Falco on March 15, 2006, 08:54:51 AM

I was hoping I could get your input.

I have a Jeep Tj 1997 and I have been having an Intermittent Engine problem. It is very random, it occurs usually while driving at a steady speed or at idle speed.  The engine speed (rpms) takes a nosedive within about a second.  It drops below the normal idle setpoint and starts running very rough (chugging/stuttering). I need to pull off to the side from anywhere to a few seconds to a few minutes.  Then, it returns to normal like nothing happened. Any Ideas of what it could be? The check engine light will not come on. It happens every time I drive it short or long distances and we can't get it to happen when I bring it to the shop.

Thanks,

Title: Intermittent Engine Problem
Post by: apex on March 15, 2006, 03:04:17 PM

only a shot in the dark.
Yer TPS might be shot or in need of a cleaning. Throttle Position Sensor.

Title: Intermittent Engine Problem
Post by: Falco on March 15, 2006, 03:15:32 PM

Quote from: "Apex"

only a shot in the dark.
Yer TPS might be shot or in need of a cleaning. Throttle Position Sensor.

Apex,

How would I go about cleaning it? I don't have a shop manule so I don't even know where it is located.

your help ia appreciated

Cheers,

Title: Intermittent Engine Problem
Post by: Spinalguy on March 15, 2006, 03:25:38 PM

It very much sounds like the TPS. Just buy a new one (about $50).
Been there done that. The #1 reason i went through 4 TPS's under warranty on my 97 TJ......



Drumroll please.......







Wait for it.......







Power Washing the engine!!!!! Now i wrap the sensors in foil if i wash it.


Tom :)

Title: Intermittent Engine Problem
Post by: sgo70 on April 09, 2006, 10:33:36 PM

oops......you mean that's a bad idea.......I mean I would never do that..... :oops:  :oops:  :oops:

Title: Intermittent Engine Problem
Post by: apex on April 10, 2006, 08:35:07 AM

did the TPS swap solve your problem?