My 96 s10 2.2 is missing again when its hot. Did the same thing last
year. truck has been running fine otherwise. Same as last year.
When it gets over 90 degrees, if i drive it too long the temp goes up to
about 210, then its starts to sputter and sometimes dies. After it cools
off, it will run again for awhile. When the ambient cools down, all is
fine again. I have already changed the fuel filter.
I am back to the same two suspects, fuel pressure and electrical.
I am more inclined to think its fuel pressure. But i am still confused
why a Fuel pump would any fail under these conditions and after a short
cool down, run ok and run OK otherwise when its cooler out. I still have
not figured out how to put a pressure gauge on the fuel rail under the hood.
Any suggestions on how to trouble shoot this?
Some suggested that ethanol gas (which i use) can cause problems.