Installed refurbished 746 injectors in 89 Cherokee 4.0....... now it idles very roughly and dies at stop lights. It's running pretty rich right now.I've seen threads stating it takes some time for the ECU to adjust....could this be my problem? It ran ok with originals although I had 2 leaking o-rings( part of reason for change).I'm 4 hrs from home and would hate to be stranded.....HELP!!!!!! Thank you....

 

Check map sensor vacuum line for breakage.

 

THANK YOU,THANK YOU, THANK YOU Fregdr!!!!!!!!!!!! Melted vacuum line on MAP.......spliced it and its PERFECT!!!!! Know you're on the " other" coast but if you ever get out to Calif your beers are on ME!!!( or other drink of choice!!) Thank you again!!!::::relieved::::::

 

It happens alot on older xjs glad it was that simple.

 

Heres some other tip from the Renix God to get your xj back up to its best...... http://cruiser54.com/

 

Funny. We both thought the same thing!! You beat me to it.

Here's a good tip to remedy that crappy and unavailable MAP to throttle body hose:

http://cruiser54.com/?p=280