I installed new fuel pump and truck will idel for about 15 second
Then will die ,but I can spray fuel into throttle body and the thing will run until quit spraying fuel in it. I have re moved fuel filter and replaced and I am getting pleanty of fuel presure but truck will not run unless you spray fuel into the throttle body.
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Re: I installed new fuel pump and truck will idel for...
Check to see if the injectors are working, what engine do you have? and what kind of fuel pressure are you getting? check fuses for the injector circuit, if your fuel pump is working and you know your spark is good, the next thing to check would be the injector system
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Clean the Mass air flow (MAF) sensor and the throttle body. I use brake clean and a tooth brush for the throttle. Clean around the throttle plate and the back of it as best as possible. Start the engine (it will take a second or two) Then rev it up and spray some into the throttle. Just spray the MAF, both sides, don't use the brush on it, you could break a $100 part.
Have fuel pressure tested in both situations. I've seen fuel pumps quit once they get heated up, then when they cool, pump again. Perhaps try WD40 sprayed in to throttle body inlet when no start, and that will tell you if it's a fuel delivery problem. Just remove air cleaner intake hose at front of throttle body, and open throttle and spray for a second or 2 then try to start. If it fires up and runs for a second or 2, then it's a lack of fuel issue.
I'd have fuel pressure tested. I had a 95' did same thing. Cold winter day, worked fine, as soon as it got warmer, or hot out, it would quit, and re-start 20 minutes later and go for a distance then die again. If I parked in the shade on a hot day, I'd get further before it quit for the first time. I started carrying a fuel pressure gauge with me. Cool in the morning my fuel pressure was up to spec @ 49-50psi. Once it got warm/hot out and it died, Hooked up gauge and it was at 2-5psi. Let it sit and cool off 20-30 minutes, pressure would jump back up and run good until fuel pump got hot again and then pressure dropped off and car quit. It sure sounds like the fuel pump, but the hard part will be getting the car to the shop at the right time, or they will need to let it run on the lot until it quits to confirm the pressure drop. One thing you can try is when car quits, have a can of WD-40 or quick start with you and a screwdriver. Loosen the clamp on the air intake hose where it connects to the front of the throttle body and pull it off. With vehicle off, turn throttle linkage so the plate opens up enough to spray WD-40 a second or 2 in the throttle body. Then try to start it. If it starts and runs momentarily, then you can be pretty sure it's fuel related and my guess is the pump needs replacement.
sounds real easy either a bad idle air control solenoid or more likley a blown throttle body gasket. to test fro a blown gasket, with engine running and cool spray carb cleaner or brake cleaner around base of tb were it bolts to intake. when it hits the bad area, should idle down and be normal for a second or 2. iac is possible,try this first since its so common and let me know
Check fuel pressure when it dies? Or remove air intake hose at throttle body inlet, open throttle slightly,(with key off) and spray wd-40 inside throttle body for a second or 2, then try to start. If it starts for a second or 2 then quits, you have a fuel delivery problem, such as bad fuel pump or plugged fuel filter.
get a spark plug tester for seeing if you have spark.the spark plug lead goes to it,and the clip is grounded to the engine.you will see a spark across the gap if it is ok. spray some fuel spray in the throttle body,and see if it starts and dies,if it does then you have a fuel problem.possible things are...faulty distributor cap,bad fuel pump,faulty distributor.
there is a sensor on the throttle body it' controls the idel of the vehicle it's called a tps and has a electrical lead to it this should be replaced it will be positioned right behind the butterflyplate of the throttle body