88 corvette issues
Thread Starter
2nd Gear
Joined: Sep 2019
Posts: 2
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88 corvette issues
Hello everyone I have an 88 corvette, the service engine light keeps coming it’s coming up with map sensor error but there’s no map sensor on the car. I lose throttle response when in gear, car sputters and lose of power soon as I put car to the floor it takes off and runs normal. My fuel milage decreases when service light is on also. Any suggestions? I read online by one forum to unplug the ecm unit let it sit for an hour and plug it back in tried that error code comes right back on and car runs like **** again. Not sure how to fix this issue could sure use some advice. Thanks
wes
wes
Racer
Joined: Oct 2009
Posts: 433
Likes: 55
From: The Beautiful Pacific Northwest
What is the number of the code it is throwing?
What did you use to determine that it has a "Map Sensor Error"?
The 88 does not have a MAP sensor, but it does have a MAF sensor.
Jared
What did you use to determine that it has a "Map Sensor Error"?
The 88 does not have a MAP sensor, but it does have a MAF sensor.
Jared
Advanced
Joined: Feb 2017
Posts: 66
Likes: 26
From: New Zealand
I had a similar issue wit my '88. The error code was 34, MAF sensor. Local garage fixed it during a regular service by cleaning up the throttle body and sensor.
I recently gave the car some throttle on startup (I know, not needed...) and the SES gave a warning. Also a cloud of smoke, lumpy idle and then odd fluctuations in the idle speed. Took it for a run round the block, turned the engine off then restarted - all ok again. Lesson: keep foot off accelerator pedal when starting.
Don't know what code it threw, haven't checked it.
I recently gave the car some throttle on startup (I know, not needed...) and the SES gave a warning. Also a cloud of smoke, lumpy idle and then odd fluctuations in the idle speed. Took it for a run round the block, turned the engine off then restarted - all ok again. Lesson: keep foot off accelerator pedal when starting.
Don't know what code it threw, haven't checked it.
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Yes it doesnt have a MAP. Pull the code number itself, and buy a Helm Shop Manual. It will detail a full procedure to track down a MAF code.
It will tell you whether its the MAF itself or the relays behind the battery.
It will tell you whether its the MAF itself or the relays behind the battery.
