Question about 1989 Cadillac Sedan DeVille

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No fuel pressure when cranking over. dump gas down carb and runs til fuel is gone. Its a 89 caddy deville with 4.5, has sat for two years. Is it the fuel pump or could it be the fuel relay? If relay, where is it? thanks

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More often than not it is the fuel pump, especially with sitting for a couple years, hopefully empty if not try and get out as much of the old gas as possible when you replace the pump.

Posted on Aug 03, 2010

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89 f150 will start but after choke let's idle down it dies or if you even touch the gas. It had sat up for 5 years but the first time I got it started it drove for over an hour.


The damage is already done. Gasoline breaks down within 1 year. Drain and flush the old fuel out of the gas tank(s). Try adding Chevron Techron fuel injection cleaner to the replacement gas. That may work. However, you probably need to remove all the fuel injectors [if it's a fuel injected engine] and have them sent out to be professionally [ultrasonic] cleaned and tested. Fords are notorious for fuel injector problems. Also do a fuel system pressure test, as the bad gas may have damaged the electric fuel pump [located in the fuel tank(s). For a carbureted engine, you will need to have the carburetor overhauled or replaced with a rebuilt unit. NEVER let a vehicle sit unused for more than 6 months without first treating the gasoline. I always add a fuel stabilization product like Sta-Bil to the fuel, if the engine will not be run for at least 2 months or more. Adding these products after the fuel has gone bad [is already old] will not help. Then it's to late. Below is a link for Sta-Bil. I've used this product for over 20 years. It will save a LOT of grief, when storing vehicles or gas powered lawn equipment. See



jap=1t2&jkId=gpt:pt_134962&js=1&jsid=34339&jt=1&jr=http://shop.advanceautoparts.com/p/sta-bil-ethanol-treatment-22264/10057636-P%3Fcm_mmc%3DACQ-_-Google-_-Enhanced-_-Dynamic#utm_source=acq&utm_medium=google&utm_campaign=enhanced&utm_content=dynamic">Sta Bil Ethanol Treatment 22264 Advance Auto Parts

Mar 31, 2015 | 1989 Ford F 150

1 Answer

Car will not run unless gas in carb


Sounds like the fuel pump is bad. The engine is just not getting fuel unless you pour it in the carb.

Apr 12, 2014 | 1984 Lincoln Town Car

1 Answer

1996 coupe de ville engine turns over won't start it has fuel and igniton won't run it just shut off not immediately started to slow down after pulling away from a traffic light and then shut down


1996 caddy, the first thing i would do is to have the computer scanned to see if there are any codes stored. the code help alot in pin pointing the problem. for example the computer is always watching all sensors and input and out sensors and when something fails or is out of specs then the computer stores a code for that component, could be a crank sensor or o2 sensor or even a loose gas cap, these code if any stored is where i would start frist. there are many auto part stores that scan these codes and give you a print out , you say theres spark and fuel but how much fuel pressure is there. You will need to check the fuel pressure at valve on injector rail, you could have fuel but with low pressure car will not start and if it does it will shut down or stall when giving it gas. start with a fuel gauge and make sure theres enough pressure, this problem sounds like a bad pump.

Mar 20, 2011 | 1996 Cadillac DeVille

2 Answers

My 89 ranger has been sitting for 7 years. i got a new battery for it and it will crank but will not start. i am not sure where to start looking to fix the problem. before it sat it ran like a champ.


Hi,
Is it getting gas and fire?
If so and you don't have fresh gas in the tank, I would suspect some bad gas after sitting for 7 years.
Hope this helps. Good luck!

Jul 09, 2010 | 1998 Ford Ranger SuperCab

1 Answer

1988 mercedes 190 e only runs if I dump fuel down the carburator then dies. Its not getting fuel for some reason.


The fuel pump has gone bad in it. It's time to replace it. I'm sure that the carb. is fine since you can dump fuel down it and it will run for a short time. Fuel just isn't getting into the carb. for the car to run right.

Mar 31, 2010 | 1988 Mercedes-Benz 190

1 Answer

1984 Civic gas not getting through carb


clean the carb jets,they are blocked

Jun 08, 2009 | 1984 Honda Civic

1 Answer

Car not getting fuel


If it is a 1980 Caddy it either has a carburetor or throttle-body fuel injection( V864, if it's fuel injected you might need a new fuel pump or fuel pressure regulator ) and you can remove the aircleaner lid and pour a little gas down the carb (hold the choke plate open with a screw driver placed between choke plate and carb air horn) or throttle-body. It might take a few tries before the fuel pump fills the float bowl up on the carb for it to keep running. If the cars has really old stale gas in the tank you might need to drain it and refill with fresh gas. Change the fuel filter and add a can of fuel injector-carb cleaner to the gas tank.

Apr 16, 2009 | 1980 Cadillac Deville

1 Answer

Fuel


dump where? gas tank ..carb?..look for cracked fuel lines from tank to engine/fuel pump

Oct 02, 2008 | 1988 Chevrolet K1500

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