Jdubskie

Well it started to surge "feel like its running out of gas" but had half tank and when I finally stopped it just died and wouldn't start so towed it home, next day I replaced the fuel pump/filter no help so replaced the pressure regulator still nothin so got new plugs cap rotor and wires and tps with still very little improvement checked the timing and its good tested the afm on my buddy's truck and it works just fine. All itll start up and idel for a sec then just die out when I push the gas, even when i try to rev it up itll fall all over iteslf and shut off but start right back up fo just a sec. there's no vac leaks checked more than a few times. I'm all out of ideas if anyone has any thoughts Please let me know. Also tried a spare ECM and no help there ether.

Jdubskie

Anybody got any ideas for me to try?

Gamefreakgc

Don't throw any more parts at it unless you know it's the issue. Fuel Pressure Regulators rarely ever go bad...

These trucks are known to have air/fuel mixture problems, you can search the forums (or watch, seems like one of these threads shows up every day). Check your VAFM out per the factory service manual. Test for resistance as directed. If it measures out of spec (must be done when engine is cold) THEN replace.

Also, check for any sketchy wiring. Sometimes previous owners botch up the wiring and as it ages they will short out.

It might also help to ensure all your vacuum hoses are connected properly. They might be crossed and causing back pressure or not allowing air through the intake.

Co_94_PU

iTrader: (-1)

Clogged exhaust?

PS. The resistance range given in the book should account for engine heat. The more accurate test is the voltage received by the computer which is listed in the ECM section of the manual.