Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: jtp on September 21, 2006, 09:48:39 PM

Title: WJ 4.0l 1999 Grand Cherry
Post by: jtp on September 21, 2006, 09:48:39 PM

Fantastic car but giving problems.
Most time it starts and travels, engine cuts out momenterily after about 400m, blip the throttle and vehicle runs fine.
Also very lumpy on tickover, to such an extent vehicle can rock.
Problem seems to be getting worse as I am now experiencing what seems like a missfire when engine  is coasting when travelling at speed.
Have changed 02 sensors, main dealer reccomends changing PCM. expensive!
Any help appreciated.

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Post by: daggie on September 21, 2006, 09:54:53 PM

go to a diffrent dealer, could be a number of things, cps for example, fault codes are needed  

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Post by: Anonymous on September 21, 2006, 10:00:31 PM

What mileage is it?

Oh and where are you based?

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Post by: greggmo on September 21, 2006, 11:06:18 PM

throttle position sensor or try oxygen upstream sensor would my first Port's of call.

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Post by: jtp on September 25, 2006, 06:12:00 PM

Based West Yorks. Milage is 72k
Can you retrieve error codes on this model without computer ?

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Post by: Tank on September 25, 2006, 06:14:42 PM

Take a look here

http://www.wjjeeps.com/faultcodes.htm (http://www.wjjeeps.com/faultcodes.htm)

Should be of help!!

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Post by: jtp on September 25, 2006, 06:41:25 PM

Tried using the ignition key as described by this artical with no joy.