85 Rough running. Please Help!
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Joined: Feb 2012
Posts: 95
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From: Valparaiso Indiana
85 Rough running. Please Help!
Lately when I go to turn my vette on, it just clicks. There is no power to anything, not the lights, ignition, or even the security light. But if I shake the battery, it would start. But this last time, it wouldn't. So I disconnected the battery and put it back on. Ever since that, my check engine light has been on, it dies 3-6 before it will continue to run, and full throttle gives 2500rpms at most... What could this be?
Instructor
Joined: Aug 2011
Posts: 135
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From: London, Ontario
You need a new battery first of all! your battery may not be charging properly due to age, how long it sits, weather your alternator is working properly etc. Start with a new battery. Take that one out, put it on a trickle charge for 24 hours. then have it load tested. You will know pretty quick if its junk. GL
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Joined: Feb 2012
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From: Valparaiso Indiana
I went ahead and bought a battery. The alternator should be fine because I get 14.5 volts when its running. But anyways, I haven't had a chance to get the battery in yet... I will this weekend. But while I was getting my battery, the couldn't scan for codes because my car is too old. The only did 96 and up.
Race Director
Joined: Jun 1999
Posts: 14,924
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From: Merritt Ils Fl
First find a better parts house. Second your 85 can be scanned using a paper clip. Auto Zone, Advance and I am sure others will do a scan for free. With the battery swap all stored codes will be erased, run the car until the SES light comes on, then pull codes.
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Joined: Feb 2012
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From: Valparaiso Indiana
Auto zone is where I went. They didn't run the test because they said it can't.
Race Director
Joined: Apr 2002
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From: Anaheim CA
They didn't run the test because they're stupid.
You can do it quite easily yourself. I thought there was a tech tip on here on how to do it but I couldn't find one. I do have this link:
http://corvettephotographs.com/c4vettes/codes.htm
The traditional way to short pins A & B together is with a straightened paper clip.
You can do it quite easily yourself. I thought there was a tech tip on here on how to do it but I couldn't find one. I do have this link:
http://corvettephotographs.com/c4vettes/codes.htm
The traditional way to short pins A & B together is with a straightened paper clip.
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
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Joined: Feb 2012
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From: Valparaiso Indiana