Yikes - TBI Not Working On My 1990 G20 Sports Van

[ChevyTech]

Originally Posted by tx1tek

Ok, been away from this thing for a couple of days to regain my senses. First of all, I want to say thanks so much for all your help in diagnosing this thing.

You're welcome!

Originally Posted by tx1tek

I remember something John found last Saturday that I haven't mentioned. He had his computer on it when we had it running and noticed that the temp sensor was saying -30 when it was partially warmed up. Would that make it run really bad, loping, constantly searing for RPM?

Yes, and this is a common problem with the coolant sensor that is next to the thermostat.

Originally Posted by tx1tek

What does a temp sensor cost roughly?

Under $25
Some people find OEM sensors online in the $15-$20 range
I grab ones that look fairly new at the U-Pull-It for $4.