My 1988 F-150 Wouldnt start so i bought the Fuel thing for inside the tank and a new fuel filter still didnt start so i got another part that goes on the distributor then it started ran good for two weeks then it would run then just lose power i sit there for like ten minutes then it will start again then do the same thing so i got another part fuel pressure regulator and I thought for sure it would start going but it continues to die out help me I love my truck
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DID YOU CHECK FUEL AT THE RAIL WITH A GAUGE OR JUST PUSH THE NEEDLE VALVE AND HAVE FUEL THERE. IF YOU DIDN'T CHECK IT WITH A GAUGE YOU MORE THAN LIKELY DON'T HAVE ENOUGH PRESSURE. BEING ITS A FORD YOU NEED TO CHECK THAT THE FUEL CUT OFF SWITCH DID NOT POP IF ITS OK THEN IT'S THE PUMP
Fuel Pump-a possible. The time frame of 30 minutes will vary.
The armature on the pump motor is worn, as well as the tiny bearing,so it seizes or just stops conducting current.
Drop fuel tank and replace. May be able to remove all bed bolts but rear ones, and tip bed up.
Theres 2 pumps
one in the tank, lift pump, and one in the chassis rail under the driver side.
The one in the tank is cheap, the one in the rail is not.
The one in the tank only produces low pressure to prime the main pump and if it is broken, may not cause that much of an issue except when starting. the one in the rail is a no-start if it fails.
The idea is that the rail pump can supply high pressure for the injectors, so a fuel pressure test at the injector rail will determine which pump is playing up.
Hope that helps
check fuel pressure @ service port on fuel rail. also listen for fuel pump to come on when you first turn on key. pump is in fuel tank. also note i have seen a lot of f150 302 injectors clogg up.but that usually effect idle and performance. if there is good fuel pressure then check fuel injector signal with a tester called a noid light. it is inexpensive and can be found @ most auto part stores. you really should'nt check injector signals with a standard 12 volt testlight. it has been known to burnout the drivers on the ecu. test all that first.
check to see that you have fuel all the way to the engine.to do this: pull the fuel pump fuse and, crank the engine a few times to releive pressure then open the fuel line, cover it with a rag for safety then: replace the fuse and, crank the engine just for a second or, two if no fuel comes out it's another fuel filter probably on the truck frame rail that is the problem or, low pressure from the fuel pump
There should always be power at the injectors as long as the fuel pump is on. The fuel injection ECU provides a ground to the injectors to turn them on. You most likely have a bad fuel injection ECU. This is a very common failure on 88,89 and 90 SAABs.
fuel pressure regulator? This diverts excess pressure from the rail back to the tank. When they wear out they usually stay stuck open thus diverting all pressure back to the tank. Pressure tests do not reveal this as pressure is checked before the rail not in it. I do believe you have a bad fuel regulator. They are 75US ouch.