• Welcome to the new NAXJA Forum! If your password does not work, please use "Forgot your password?" link on the log-in page. Please feel free to reach out to [email protected] if we can provide any assistance.

Weird stall on cold start

78/xj88 said:
Search it works
Cold starts....
TPS* CPS* 02 sensor and so on............
I think both of you are the same person?
I think thats why no one has posted anything?
I might be wrong.
Er, why would a faulty TPS stall a 4.0L? You can even disconnect it and itll be fine.

CPS can act weird sometimes, but usually when they go out they simply wont run at all. Worth a shot though.

And the O2 sensor isn't even used until it warms up.

@ Original post
Try checking the resistance on your temperature sensors with a multimeter (coolant temp sensor and intake air sensor.) There should be some charts lying around these forums some where. Or in the link down below.

Check those and definitely your fuel pressure and ignition.

Edit:
Just looked at your profile and it turns out your jeep is an '89. Check out:
http://www.lunghd.com/Tech_Articles/Engine/Basic_Sensors_Diagnostics.htm

That could help you a bunch.
 
Back
Top