Question about 1995 Oldsmobile Cutlass Ciera

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Cuts out and dies but usually starts back up. fuel pump pressure shows about 40 and above

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41 - 47 psi is the fuel pressure

Posted on May 18, 2011

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Fuel pumps are not working fires up if u spray start fluid in carb


It would greatly help to know make, model, and year, but in general you check fuel pump pressure with a gauge, and if the pump is electric, it always has a relay so there is the ability to have a safety cut out. Some vehicles use lack of oil pressure to cut out the pump relay, but most use the alternator output. Fuel injection usually has from 20 to 40 psi fuel pressure, and carb systems from 3 to 10 psi.

Jul 29, 2015 | Cars & Trucks

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Car dies once it warms up


You hook up a fuel pressure gauge to the test port on the engine's fuel rail, and see if the pressure is correct with what is specified for the car. If the pressure is correct, the pump and filter are good, doing what they are supposed to do. Some stores loan or rent fuel pressure gauges. Multiport fuel injection systems usually have high pressure requirements-about 40-50 psi. Check the specs for your car. Usually, the specs call for a pressure with just key on, no start, and a second pressure (maybe 3-10 psi lower) with the engine running.

When it dies, can you immediately restart it, or do you have to wait a bit? Probably fuel or spark related, Any trouble codes present?

Aug 16, 2014 | 1995 Nissan Sentra

1 Answer

1989 ford f-150 start but stalls out


Injector require 40 PSI on a Ford. Your Fuel Pump is BAD

Apr 08, 2013 | 1989 Ford F 150

1 Answer

My 90 Ply. will cut off after just a few miles and will not restart. But after it sets for over an hour or so it starts and is good for a couple more miles before it cuts off again?


Have fuel pressure tested when no start. Or, if you have no access to pressure test, try removing air intake hose at front of throttlebody and give a good spray of quickstart, or WD-40 with throttle plate open, then try starting. If it fires up momentarily then dies, I'd be looking real close at fuel pump, or at the least fuel filter. The fuel pressure test will confirm.

Aug 01, 2011 | 1990 Plymouth Voyager

1 Answer

Fuel Pump problems. Diagnostics shows a pressure loss.


pressure loss is either a bad fuel pressure regulator on the fuel rail where the injectors are, or a bad check valve in the fuel pump in the tank. usually the latter.

A quick test is to turn the key to on and measure pressure. Should be 40 psi. Pump will hum for 5 seconds and shut off if engine is not running. (Safety step).

Pressure should drop very little for 5 minutes.
You can cycle the key off for 15 seconds or until you hear the relay click off. Then turn key back on to start pump for 5 seconds again to build pressure. This will help get it started for the day as it builds pressure that bled down over night.

Please rate, thanks.

May 25, 2011 | Ford Ranger Cars & Trucks

1 Answer

I have a 95 caprice lt1 motor how will can tell if i need fuel pump.my car cuts off when i drive it for while or i try to start it after i cut the car off and the engine light comes on and both fan come on


fans coming on is a system check. first have the computer scanned to make sure no codes are set causing this. have fuel pressure checked. check the relay for the pump. not seen many fuel pumps go and stop intermittently usually they freeze and may start once or twice but just die and dont come back. with a pressure gauge connected see if the problem will occur again while the gauge is connected and loss of fuel pressure falls off. hope this helps

Feb 06, 2011 | 1995 Chevrolet Caprice Classic

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When you start the truck it cranks over and runs normal for about 10 seconds before it slowly starts to die out. the other thing is when you start it just like the the first problem i said above it when...


It sounds like a weak fuel pump. You would need to have a pressure gauge to hook up to the exit end of the fuel pump to test the pressure. A call to a tech at a local dealer could give you what the proper pressure should be. I'm thinking it should be 35-40 lbs. If the pump is weak it may have enough gas to get started, but as it runs, the pressure bleeds off, so it doesn't send enough fuel to the engine causing it to die. If you push the accelerator, basically the same thing happens, it tries to jump up the pressure and can't keep up. If you don't have the proper tools or gauge to do this, it should be examined by a mechanic.

Nov 23, 2010 | 1994 Toyota Pickup

1 Answer

02 CHEV.TRUCK.will not start


38-40 is not enough fuel pressure. Replace the Fuel pump.

Apr 05, 2009 | 2002 Chevrolet Silverado 1500

1 Answer

1992 Blazer with fuel problems


check your fuel pressure it should be about 40 to 50 psi while driving probably bad pump

Mar 11, 2009 | 1992 Chevrolet S-10

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