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5.3 swap starts but wont stay runnung new fuel pump new regulator new computer...

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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fuel pump relay

Posted on Dec 17, 2008

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SOURCE: 2001 kia rio fuel pump does not work

Are you positive its the fuel pump? Have you tried running the pump with the return line off to see if it pumps fuel? They don't always have to make a noise.

Also refer to

Posted on Jan 21, 2009

  • 41 Answers

SOURCE: 98 chevy camaro wont start how do you reset fuel pump regulator ran out of gas


Posted on May 08, 2009

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SOURCE: i have a 1991 corvette, it wont start. i can start

If there is not fuel going thru Fuel injectors, then it won't start. You can buy NOID lights at any auto store to connect to Fuel injectors to see if there is a problem with Fuel injector module. Here how the NOID lights look like:

You plug these into the connectors of Fuel Injectors to check during cranking. If there is light then your Fuel iinjectore Module is Good.
Then there is a problem with the Regulator. Here how it look like.

Posted on Sep 23, 2009

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1996 rodeo wont run unless im putting gas in throttle body

Check the ecm main relay swap it out with the horn relay and see if it starts the Ecm controls the fuel pump prime and when it runs if it not working correctly it won't run the pump

Dec 17, 2015 | Cars & Trucks

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1999 saab cranks wont start

Disconnect your fuel filter and turn the key on. If it shoots gas several feet away, then the start cycle on the fuel pump is probably good. if not, then get a new fuel pump. If it's good, then the problem will be in your fuel regulator, or injectors.

Jun 12, 2012 | 1999 Saab 9-3

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Have a 1986 nissan 300zx V6 non turbo wont start, hear fuel pump runnung no oil pressure on gauge replaced oil pressure unit still wont start any helpful advise

a oil gauge reading maybe delayed until car starts and builds good oil press.Did you check for spark
was car running good before this happened? Do you have a rpm reading when cranking car?

Nov 02, 2011 | 1986 Nissan 300ZX

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Put new fuel pump on but wont start if u spray gas in motor it will start. what is the problem.

Hi, can you hear the fuel pump come on when you turn the key on? If not, try replacing the fuel pump relay or swapping it with the horn or A/C relay. Please let me know if you have questions and thanks for using FixYa.



Jan 02, 2011 | 1988 Ford Bronco

1 Answer

Truck wont start or stay on unless fuel/starter fluid is used. Checked the fuel pump and that good, it looks like the TBI wont get fuel?

check the filter and the press regulator. if you can, check the pressure from the pump and to the injectors. it might be a sensor, or the computer. hope not. check the tbi connectors for power.

Dec 22, 2010 | 1989 Chevrolet K1500

1 Answer

My 95 tahoe starts but dont stay on. Fuel wont stay pumping from tbi. Just swapped a motor from 80's camaro. Was running real good in box chevy perfect. Now fuel wont stay flowing out of injectors. Already...

did you install the oil pressure switch origional to the tahoe? The tahoe uses a low oil pressure shutdown, instead of an inertia switch to shut off the fuel pump in the event of an accident. If the pressure circuit does not close within 3 seconds after the engine starts the fuel pump shuts off. This is in case the truck is on its side or upside down the pump will shut off.

Aug 19, 2010 | 1995 Chevrolet Tahoe

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I have a 97 blazer and i changed the fuel filter and i can hear the fuel pump turn on but it still wont stay started. i also put some fuel in the carb and it started for about 5 seconds and then it wont...

I would more likely think that the fuel pump is the problem. The regulator bring the pressure down, so the vehicle would run, just rich. Disconnect fuel feed line to see if fuel is reaching the engine. If not the pump is the problem.

Oct 29, 2009 | 1996 Chevrolet Blazer

3 Answers

Engine wont start

if you can hear the fuel pump when turn the key on with out turning the engine, then it could be that your fuel pressure regulator is broken, check your fuel pressur.

Jun 12, 2009 | 1993 Chevrolet Astro

1 Answer

Fuel pump wont pump

The electric fuel pump will have to much pressure for the carb, you need a pressure regulator to cut the pressure down to 5 psi. The reason the fuel pump won't stay running is because it gets its power from the oil pressure sensor by the distributor. Did you install this on the new engine and plug it in? The relay is what runs the pump for 5 seconds and shuts off.

Apr 05, 2009 | 1988 Chevrolet C1500

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