'86 Trouble Codes
Thread Starter
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Joined: Aug 2010
Posts: 88
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From: Apex NC
'86 Trouble Codes
I just recently replaced all of the gaskets for my intake and my valve cover gaskets. After getting everything back together and setting the timing to 8* the car is idling around 1100rpm really poorly with a lot of surging. The TPS is reading about 5V. I pulled the codes and it threw 15, 22, 33, and 42. I know 33 is MAF and 42 is EST. Anyone know what the other two are or have any suggestions? Thanks for any help guys.
Thread Starter
Advanced
Joined: Aug 2010
Posts: 88
Likes: 1
From: Apex NC
Awesome, thanks for the response. I'll double check the TPS voltage and I guess replace the two MAF relays for code 33. I saw on another thread that that is the first think you should do. Sure hope that gets rid of the MAF code...
Team Owner
Joined: Jan 2003
Posts: 20,333
Likes: 263
From: Summerland B.C. Canada
Code 15 will make it run like crap, start there and work your way up the codes. Actually, so will 22 and 33. 
http://members.shaw.ca/corvette86/Code%2015.pdf
http://members.shaw.ca/corvette86/Code%2022.pdf
http://members.shaw.ca/corvette86/Code%2033.pdf
http://members.shaw.ca/corvette86/Code%2042.pdf
http://members.shaw.ca/corvette86/Code%2015.pdf
http://members.shaw.ca/corvette86/Code%2022.pdf
http://members.shaw.ca/corvette86/Code%2033.pdf
http://members.shaw.ca/corvette86/Code%2042.pdf
