used a paperclip and shoved it into te1 and e1 ports under the hood and turn key to engine on without cranking and nothing happens. Cel light works but does not blink. it just turns off. I need it to be in diag mode to check timing. this is on an 1989 3.0 vze. any ideas? need help

 

Thats odd, on all the trucks I have checked for codes on, as soon as I shorted the connecters and turned the key to "run" the CEL would blink.

 

Are you sure you're getting a good, solid connection with the clip?

 

last time i had to jump the diagnosis it took me three solid times to get that paperclip in there well enough

so make sure its in there all the way

 

you were right, I just had to jam the paperclip in there further. works great! thx

 

did you end up pulling any codes ??

 

no trouble codes, but advanced base timing to 12*, much peppier