C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

service engine light

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Old Apr 5, 2012 | 07:16 PM
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Default service engine light

why is my service engine light comeing on ? i have a 1987 corvette
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Old Apr 5, 2012 | 07:37 PM
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Generally related to emissions. Could be a vacuum leak, bad o2 sensor, etc. Not familiar enough with the 87 to know specifically what kicks the light on.
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Old Apr 5, 2012 | 07:47 PM
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thank you
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Old Apr 5, 2012 | 08:19 PM
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There could be as many as 39 reasons the "Service Engine" light has illuminated on your 87. This happens when the computer determines that something is amiss and will send/store a code(s) which will indicate the problem.

Nothing fancy is needed to determine what trouble code the computer has. A simple paper clip will do the job.

How to do it:

http://www.corvettephotographs.com/ecm.html


Alternatively, you could go buy an expensive "Code Reader" or many AutoZone stores will read the code for you. The Paper Clip method works fine!
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Old Apr 5, 2012 | 08:21 PM
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Use this link to pull the trouble code and post your results.

http://www.corvettebuyers.com/c4vettes/codes.htm
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Old Apr 5, 2012 | 08:21 PM
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Originally Posted by Wildride
There could be as many as 39 reasons the "Service Engine" light has illuminated on your 87. This happens when the computer determines that something is amiss and will send/store a code(s) which will indicate the problem.

Nothing fancy is needed to determine what trouble code the computer has. A simple paper clip will do the job.

How to do it:

http://www.corvettephotographs.com/ecm.html


Alternatively, you could go buy an expensive "Code Reader" or many AutoZone stores will read the code for you. The Paper Clip method works fine!
Beat me to it
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Old Apr 5, 2012 | 08:47 PM
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thank's
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