ronnie310 wrote: SECURITY
LIGHT BLINKS NO CODES CHECKED POWER TO FUEL PUMP WITH TEST LIGHT, POWER COMES ON FOR APPROX 10 SECONDS WHEN KEY TURNED ON AND FUEL PRESSURE COMES UP, POWER DROPS AND PUMP GOES OFF. DISCONNECTED FUEL LINE FROM TANK TO FILTER, RAN LINE INTO A CONTAINER. TURNED KEY ON PUMP CAME ON AND RAN APPROX 10 SEC. POWER DROPPED AND PUMP WENT OFF. SHOULD PUMP CUT OFF WITH OUT BUILDING PRESSURE. CHANGED FUEL REGULATOR MADE ON DIFFERENCE. TRUCK CRANKED THIS MORNING AFTER SETTING OVER NIGHT, AND RAN PERFECT FOR APPROX 90 SECONDS, THEN CUT OFF, WILL NOT START NOW.
> carriedi wrote:
> > If you have good fuel pressure you need to check for spark and injector
> > pulse. If you have something that can tell you that you have no codes,
> > will it let you see the crank and cam sensors? See if the computer sees
> > the engine turning over. If you have spark but no fuel injection pulse it
> > could be the anti-theft. Does the security
> > If your engine died while driving that would indicate something other than
> > the security. If the security system sees a fault while the engine is
> > running it will set a code and turn on the light but it won't kill the
> > engine and it won't go into theft mode because it is programmed allow
> > starting if it gets a key fault while running. (it knows you had to have a
> > good key to get it running so loosing a key signal while running means a
> > circuit problem. it defaults to let you start engine) But if you clear
> > the memory and you have a bad key circuit, you will no longer be able to
> > start the engine. Now the memory doesn't see a key fault with the engine
> > running. That code is gone, you cleared it. Now, it only sees that the
> > key circuit is wrong when starting so... no go.
> > so, it always will crank, right? Does it start and die or does it never
> > start?
> SECURITY LIGHT BLINKS NO CODES.
> TRUCK CRANKED THIS MORNING AFTER SETTING OVER NIGHT , RAN PERFECT FOR APPROX 90
> SECONDS. CHECK PUMP POWER WITH TEST LIGHT, HAS POWER WHEN KEY IS TURNED ON FOR APPROX
> 10 TO 15 SECONDS THEN POWER GOES OFF. I THINK THAT IS CORRECT, FUEL PRESSURE BUILDS
> UP AND PUMP CUTS OFF. I THEN TOOK FUEL LINE OFF GOING INTO FUEL FILTER AND CONNECTED
> LINE TO A HOSE AND RAN IT INTO A CONTAINER. FUEL PUMP CAME ON AND PUMPED FUEL INTO
> CONTAINER FOR APPROX 10 TO 15 SEC AND PUMP CUT OFF. POWER TO PUMP CUT OFF WITH LINE
> DISCONNECTED SAME AS IF IT WERE HOOKED UP AND BUILDING PRESSURE. WHY IS POWER
> DROPPING WITH OUT BUILDING PRESSURE? PUMP STOPS BECAUSE POWER TO PUMP CUTS OFF.
> COULD FUEL REGULATOR VALVE BE THE PROBLEM? IT SEEMS TO BE WORKING OK ACCORDING TO
> FUEL PRESSURE GAUGE.