1999 chevy express 1500 (fuel pressure drops low and engine stalls when engine reaches normal temperture range). The pressure is good 55-65 psi on a cold start.
The pressure drops low 37-50 psi when the engine temp is in normal range. The engine stalls and when cool down the fuel pressure is back up to 55-65 psi.
Installed 2 new fuel pump 3 moths ago only to have the same thing going on. installed new ignition coil, distributor cap, and rotor. After installing the fuel pump each time all good for 300 to 600 miles and it's back to this.
Help!!
The pressure drops low 37-50 psi when the engine temp is in normal range. The engine stalls and when cool down the fuel pressure is back up to 55-65 psi.
Installed 2 new fuel pump 3 moths ago only to have the same thing going on. installed new ignition coil, distributor cap, and rotor. After installing the fuel pump each time all good for 300 to 600 miles and it's back to this.
Help!!
Oct 14, 2008 at 9:51 PM