My 95 Tahoe backfires through the throttle body. It run great cold until it hits 125°-170° it stalls & backfires. At 190° it stops backfiring & stalling and runs great. I changed the coolant temp senor next to the thermostat housing. It made no change. Any thoughts?

 

bad fuel? bad spark plugs? bad distributor?

so, you're saying the temp sensor is good then?

it's at the top of the engine, right? so when the coolant level gets low, it doesn't read properly?

what else changes on the engine temp sensor?

any codes? check engine light? I think that year had an OBDII right?