Quote:
Originally Posted by R30 Casey
I know this thread was started in 2017, Checking to see what the results were or if you solved the issue, I am having the same exact issues on my 88 R30, I am wondering what you did to resolve / fix your high idle issue. Any input from the user would be appreciated.
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Casey,
I know this is old and your post is a month ago,,,
Anywhoo,,, I chased a random high issue in my 5.7 tbi forever. I can data log and everything was alway in spec and then while driving it would idle crazy high until i turned the key off and restarted.
It turned out to be a defective TPS sensor. In the garage,, testing voltage it was always good. Even driving it would data log good. I finally caught it one day at a redlight. The TPS value spiked/jumped around and then went back to normal but when it failed for that few seconds it jacked up the computer without throughing a code.
Anyway, new TPS,, no more problem... I plagued me for years.
Need more help just ask,,, I will reply,
Chris