computer testing

wranglerrambler

Well-Known Member
Joined
Dec 28, 2006
Location
oxford,nc
on my 97 TJ with a 4.0 i need to know how to test my computer (PCM) to see if that is one of my issues with cranking when hot. How can i test it to see if its good bad or fading into the darkness
 
no way to check a computer internally w/o pretty good electrical knowledge and skills. auto techs diag bad computers by ruling out everything else that can cause the problem(mechanical and electrical). the really good ones will then check pwrs, grounds, and communication to the computer and then replace it.

edit: may be able to swap in a known good computer and see if that fixes the problem. don't know if any programming is involved for the swap.
 
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