Has no power and dies after a few minutes

[mrsjones]

My mother has a Chevy Lumina Mini van 1992 it started dying after running for five to ten minutes. We changed the fuel filter, the fuel pump, cleaned out the carbon build up, changed sensors and the problem still continues. What do we do next?

[chuckster]

Since it's a 1992 it is only OBD I compliant and that makes it harder to diagnose problems. Since the most popular engine is the 3.1L with Throttle body injection (TBI) I will try to give you some things to try. There is a fuel pressure regulator in the throttle body assembly. There is also some very fine screens in the fuel lines in the throttle body. Also the AIC (air Idle control) solenoid is suspect.

What sensors did you replace and what carbon build up did you clean? How many miles are on the engine?