Code 33 !!! 1988, Need help from the pro's
7th Gear
Joined: Oct 2013
Posts: 7
Likes: 0
I had trhis same problem on my 88, went through all the logic charts, pulled my hair out, no solution...
What finally solved theproblem was playing around with the TPS setting. I had it smack dab in the middle of the suggested range (.54 I think), and it had the exact same symptoms that you describe. I had minor intake modifications and true dual long tube header exhaust.
I reset the TPS down to thebottom end of the acceptable range (.48 or so) and VOILA! no more problems.
I guess at .54 volts closed throttle the math just didn't add up for the computer. It figured that there should be more airflow than there actually was for .54 volts. Changed it to .48, and ran like the wind. I made sure that at full throttle the TPS was still reporting full throttle, and it was, read over 4 volts.... alls well
What finally solved theproblem was playing around with the TPS setting. I had it smack dab in the middle of the suggested range (.54 I think), and it had the exact same symptoms that you describe. I had minor intake modifications and true dual long tube header exhaust.
I reset the TPS down to thebottom end of the acceptable range (.48 or so) and VOILA! no more problems.
I guess at .54 volts closed throttle the math just didn't add up for the computer. It figured that there should be more airflow than there actually was for .54 volts. Changed it to .48, and ran like the wind. I made sure that at full throttle the TPS was still reporting full throttle, and it was, read over 4 volts.... alls well
