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91 RS engine issues


bdnnis1983
07-15-2010, 02:29 PM
ok, here is the basic info, it is a 91 RS with the 305 TBI and auto trans.

now the issue: i will be driving and the Service engine soon light (SES) will kick on for a second then kick off. When it kicks off, the car bucks (jerks and rps drop for a split second). it just does it at random times while cruising and under acceleration both.

Other issue is sometime when i turn the key on the SES light will not kick on and the car will not start. it will take a random amount of time then it will work normally again...

would appreciate all info to help out. Thanks

wrightz28
07-16-2010, 08:42 AM
I'd start by checking the passthrough electrical connectors on the firewall, the main one is right underneath the brake booster with a bolt in the center that over time can come loose.

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