Asked in Chevy Cheyenne
Chevy Cheyenne

95 Chevy stalls at idle runs rich?

Answer

User Avatar
Wiki User
07/12/2009

Check fuel pressure in the engine bay with fuel pressure gauge. Should run at 55 psi at start-up, dropping to 3-10 psi at idle. If low fuel pressure, you need a new fuel pressure regulator.

It could also be that you need a new inline fuel filter; cheap easy fix.

It could also be deposit build-up in the EGR. How would you know? If car is warmed up and in the 'D' drive position while idling and it stalls.

Another quick check would be to purchase a GM OBD1 decoder ($40) and find out what engine flash code is turning on.

I suggest you do a quick and cheap maintenance check first before major repairs.