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Have a 1990 isuzu amigo. starts but wont stay running for more than 5 seconds. the fuel pump does not stay on once the key goes from the start position to the on position. anyone can help that would b

Got brand new relay for the pump. when you take out the charge relay it starts and runs.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 373 Answers

SOURCE: 1993 Acura - intermittent fuel pump operation (no start)

HI...
The common cause of the problem that you related.
Is the FUEL PUMP RELAY " Called MAIN RELAY.
Is located : left side under the dash.
Is a BIG relay gray colour. with a connector of 7 or 8 wires.
I recomend replace the relay.

And letme know if you solve your problem.

I hope this information work on your problem.
Thank you for use fixya.

Posted on Jul 25, 2008

  • 279 Answers

SOURCE: fuel pump relay

The fuel pump relay is located in the relay box under the hood. This box is located near the battery. The fuel pump relay's location is marked on the lid to this relay box. If your lid is missing, it is the relay just outboard of the pink 30 amp Maxi Fuse.
Charlie

Posted on Mar 02, 2009

  • 356 Answers

SOURCE: 2000 blazer 4.3 hard to start (fuel problem)

Do you have the fuel tester hooked the in the overgrown air valve on the fuel rail in the back of the engine? Or do you have the fuel line unhooked in the back and hooked to the pressure pump? You want the fuel pressure to be in that 60 lb range so if you are hooked into the pressure valve on the fuel rail allowing fuel to go through, then I am betting it is the fuel pressure regulator. To get to that, you have to take the throttle body off and take the plastic plenum that covers the injector packs. On the back of the mount where your six pack of injectors are sits the pressure regulator. If it is faulty then it is dumping fuel instead of holding the pressure like it should.
Get a Chilton or Clymer manual and it shows you in pretty good detail how to fix it. I've done it to my 98 S10 with the same engine.

If you unhooked the fuel line so you are losing pressure from the line back to the pump then I would say your pump is letting fuel back to the tank when it shuts off. My money is on the first possibility though.

Good luck

Posted on Mar 28, 2009

emissionwiz
  • 75077 Answers

SOURCE: My 1990 F150 will not start sometimes. If I turn

when u turn the key to run but don't start the fuel pump shuts off after 5 seconds + or - 2 seconds, this is normal, the common cause of no start on your truck is the TFI ignition module on the distributor, subject of many recalls for failing, also change the stator inside the distributor, use factory parts, aftermarket parts fail very quickly. here is a picture of the parts.
da17e03.jpgThis is the stator

This is the TFI ignition module.

Posted on Apr 02, 2009

  • 41 Answers

SOURCE: 1998 gmc sierra k2500 wont stay running

you'll need a professional computer to reset how ever there are two relays for fuel on chevrolet
i would suggest finding the second one first

Posted on Dec 14, 2009

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1 Answer

Put on new fuel pump got pressuer but want stay cranked


Your post is lacking any detail. However, if you are stating that the engine starts after being cranked but dies out (wont stay running) there are 2 ways the fuel pump is activated. When the key is first turned on, there is a 5 second fuel pump run (the ECM energizes the fuel pump relay). After the engine starts, the fuel pump relay will only stay energized when the oil pressure switch closes keeping the fuel pump relay on (oil pressure is above 5-7 psi). If the oil pressure switch is faulty or there is no oil pressure, the engine will stall just after starting.

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1 Answer

Won't start or keep running


double posted,
so it does crank
and does start but now wont stay running.
that can be up to 50 things,
I can do 3-5 tests. and find out why
do you want to do them , or for me to guess.
Impossible hands off. but here is my guess.

car was parked for 3 years, and fuel is bad.
i bet my guess sucks.

Apr 02, 2014 | 1990 Isuzu Amigo

1 Answer

Need to install new fuel pump in 1990 Isuzu Amigo. Have fuel pump, know I have to drop tank...just would like a diagram or description to refresh my memory :) thx


Empty tank. Remove the tank straps. Lower tank. The fuel pump is in the tank. Remove access to top of tank. Done

Oct 28, 2013 | 1999 Isuzu Amigo

2 Answers

I have a 2003 explorer sport. It starts up fine when it's cold, but if the temp is above 90, once I shut down it wont start back up. It will turn over , but quikly dies out even when pressing down on...


you have low fuel pressure for some reason, pump may be going or fuel pressure regualtor on fuel rail is bad.

pressure should be 43 psi, key on , engine off. and 34 with engine running.

Try this to confirm low pressure. Turn key to on and listen carefully for the pump to hum for 5 seconds. When it shuts off, turn key off. wait 30 seconds or until you hear relay click under dash. then turm key on for 5 seconds. repeat one more time. Then try to start engine. If it starts right up, pressure was low.

What you did was prime the system and built up pressure before start.

The pump only runs for 5 seconds when you turn key to ON, unless the engine starts. Then it stays on.

report results. please rate answer

Jul 29, 2011 | Ford Explorer Sport Cars & Trucks

1 Answer

My 1990 chevy lumina will start up for few seconds then die. it wont stay running for more than 5 seconds but will starts up every time. when i give it gas it dies immediately


Sounds like low fuel pressure. Check your fuel pressure. If you have the 3.1 liter engine and just turn the key to the "on" position you should have around 41 - 47 PSI. When running it should have about 31 - 44 PSI. If you have the 2.5 liter engine you should have 26 - 32 PSI of pressure when running. I hope this helps and good luck.

Jul 09, 2011 | 1990 Chevrolet Lumina

1 Answer

I dropped the fuel tank to drain old gas.I put new gas in and turned engine to start it didnt start. Should I be able to hear fuel pump if it is working?This is for a 1990 ford e-150 van.Also where the is...


Turn the key to the ON position without starting the engine. You should hear the fuel pump running for 5 seconds if working. This primes the gas to the injectors when doing this. If not heard running check the oil pressure switch for the 12 volts needed to run the fuel pump starts there on that harness. When the engine starts and the oil pressure reaches the normal pressure the computer shuts off that circuit and turns on the fuel pump relay to run the pump. The relay stays on till you shut the engine off

May 08, 2010 | 1990 Ford Econoline

1 Answer

1990 full size blazer starts fine idles then dies


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

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1 Answer

Toy starts runs 10 seconds and stops change fuel filter now wont


When you tur the key forward do you hear the fuel pump running? You should hear a low hum for about 20 seconds near the gas tank and then it stops. If you hear this your pump is good. If it keeps running or you can't hear it at all it's bad or the main fuel pump fuse is blown.

Jul 28, 2009 | 1990 Toyota Camry

2 Answers

92 Isuzu Amigo want stay running


It sounds like your accelerator pump has a leak.

Mar 21, 2009 | 1992 Isuzu Amigo

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