1988 code 33.
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Instructor
Joined: Jan 2015
Posts: 226
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From: Dade City Florida
1988 code 33.
So I had a couple codes and replaced my knock sensor, electronic spark control and the 02 sensor. I cleared all codes and take a drive. After a couple. Days I get an engine light and it was running like crap. I had to stop for a minute. The restarted and headed home. No engine light. I run the codes anyway and got a code 33. Basically it says low vac or low flow at maf sensor. I checked and found nothing. I'm going to clear and try again but any other things I should look for.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
You're looking at the wrong cheat sheet for the codes. On your car code 33 is MAF output high. Use this link:
https://www.corvetteforum.com/forums...post1576116036
You can get this error if you have a bad connection to the MAF sensor. Probably a corroded pin in the connector. Sometimes the pins get pushed part way out of the connector and don't make a good connection.
https://www.corvetteforum.com/forums...post1576116036
You can get this error if you have a bad connection to the MAF sensor. Probably a corroded pin in the connector. Sometimes the pins get pushed part way out of the connector and don't make a good connection.
Team Owner
Joined: Sep 2001
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From: Athens AL
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So I had a couple codes and replaced my knock sensor, electronic spark control and the 02 sensor. I cleared all codes and take a drive. After a couple. Days I get an engine light and it was running like crap. I had to stop for a minute. The restarted and headed home. No engine light. I run the codes anyway and got a code 33. Basically it says low vac or low flow at maf sensor. I checked and found nothing. I'm going to clear and try again but any other things I should look for.
You have to check the relays according to the manual procedure to see if this is an intermittent thing or a true failure. When one fails, replace both. They are behind the battery on the firewall.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
