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Old 06-07-2012, 04:25 AM   #8
1989toyotasupraandpickup
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Join Date: Jun 2012
Location: ny
Posts: 26
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its running rich on idle. before the i replaced the manifold gaskets at idle the car would run at 14.7 on the afr gauge. now that i put it back together i find that the car idles at around 12.5 or so. no codes that i have found but the check engine light will not light up if there is a code. it does turn on when i turn the key to the on position indicating that the light works. i have to jumper the terminals in the diag box to find if there are codes. really weird. my truck is the same way. but i think i may have found the problem. it may have been a broken signal wire to the oxygen sensor just off the down pipe. its a shielded wire. i fixed it and put a new connector on and decided to replace the main front crank seal seams i have it all ripped apart and the old one was dry rotted. i will have it running by tomorrow hopefully.
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