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1998 Chevrolet 5.7 start but cuts off immediately have replaced fuel pump

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If no CEL/MIL, then ignition switch is suspect.

Posted on Feb 09, 2019

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  • Chevrolet Master
  • 412 Answers

Did you check the relay? distributor cap and rotor will also cause this and check spark plug wires.

Posted on Feb 09, 2019

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6 Suggested Answers

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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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SOURCE: 1998 buick la sabre cranks no start

when you put the key on do you have a check engine let me now please dont rate this as a thanks for trying let me now if you have spark to thanks pierre

Posted on Nov 09, 2008

Landyman
  • 89 Answers

SOURCE: 1998 land rover discovery.

The fuel pump must run constantly while the engine is running.There is a return for excess fuel back to the tank.

Posted on Nov 28, 2008

  • 335 Answers

SOURCE: 94 dodge grand caravan no fuel in fuel rail

Dear Ron, you have replaced fuel pump and fuel filter. You have checked the fuel pump relay. Still no fuel in rail. Try bypassing fuel relay with jumper from batt to fuel pump. If o/k then check computer for ground to relay. This system uses a relay that is operated by the computer that supplies a ground for the relay to operate. The wire color is green,16 gage. If the ground is not available then "no fuel" Check this with a test light. Key on and crank apply test light to ground wire and other end of light to ground. You should hear relay click and get fuel. If this checks out you will need to replace computer or get creative with rewiring the relay so it works without computer input. Good luck Moe

Posted on Apr 24, 2009

honeymokey
  • 3113 Answers

SOURCE: 1998 gmc 2500 wont keep running

The anti thieft system is keeping it from running.

Posted on Dec 13, 2009

lesabre1972
  • 474 Answers

SOURCE: replace power steering pump on a 1998 chevrolet

It could be done at home if you bought the proper tool to remove and replace the pully on the pump.They do give you some sort of a tool with the new pump but I find it really weak and they brake leaving you stuck.This is why I say"If you bought the proper tool".

Posted on Feb 17, 2010

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2 Answers

98 blazer will start and run for a while then cut off going down the road, but starts back up. Although yesterday it cut off then kept cut off every five mins. Once it sat though it ran for about five...


I think you are on the right track. It sounds like you have a fuel flow problem and those are the two items that immediately come to mind. I would start with the filter and then move on to the fuel pump if there is no change.

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While stationery engine cuts out - restarts immediately. On occassion won't start at all - left a while starts.


There must be something wrong with the fuel pump.

The fuel pump must have lost pressure so bad that it requires to be replaced. It is located in the fuel tank beneath the back seat.

Be sure that the pressure of the pumps are the same.

Good luck and please rate my solution.

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first is it getting fuel ? try shooting a little gasoline or starting fluid into the air cleaner and see if it will run ? if so it is needing a fuel filter or a fuel pump replaced... thanks and holler if you need more Jerry

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Doesn't want to start at first


Before you crank try and cut key on for 5-10 seconds then off and back on then crank if cranks up then you have a fuel problem. this will allow pump to run and pump fuel up. could be a bad check valve in pump causing fuel to drain back

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