Join Date: Sep 1999
Location: Vancouver, Washingon
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Re: 1989 full sized blazer TBI stalling
I had a similar problem with a TBI. I also seem to remember getting a code. I removed the TBI, and found lots of carbon build up under the gasket. I cleaned all the carbon build up, which was mostly from the EGR passage, and installed a new gasket. I seem to remember the carbon build up caused a problem with the IAC (Idle Air Control) valve, so I cleaned it also. It only cost me about 1 1/2 hours of cleaning and about $8.00 for a gasket. Maybe that's all you need to do?
Let's hope you don't need an ECM, because I've also seen a similar problem that needed an ECM to fix the stalling problem. In that TBI problem there was no code. When the engine stalled there was no spark, and the injectors did not fire. Remanufactured ECM's are priced about $100, maybe less.