Question about 1991 Toyota Supra

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Power Problem I do'nt have any power on the fuel pump, What it could be?

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They have a fuel pump relay and fuse located under the bonnet so thats where i would be looking first if the fuse is not blown its most likely the relay.

Posted on Jun 30, 2008


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3 Answers

No power to the fuel pump

Maybe this will help ---

Also check the fuel shut off switch since you do not have power.


Jan 08, 2015 | 2002 Toyota ECHO

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It may be your fuel pump or a partially clogged fuel filter, you may also have a vacuum leak somewhere.

Dec 04, 2014 | Cars & Trucks

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Dont stare no pwer

You are meaning the fuel pump? Recheck your fuel lines and be sure to also check your wiring harness connection going to the top of the tank? You can pull the relay for the fuel pump and use a test light in one of the sockets when turning the key to on should light up for ten to fifteen seconds then go off each time cycled on!

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2008 gmc fuel pump works, sometimes it dos'nt

Check any fuel pump relay and replace.
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2000 blazer wont start

If you don'nt have spark check for power from coil.If theirs no spark coming out of the coil then replace coil.Just pull the coil wire off the distributor side and ground it against metal and have someone else crank it over while you watch for spark.Be careful don't hold wire by hand you will get shocked.

Jan 03, 2012 | 2000 Chevrolet Blazer

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The only manufacturer that uses a fuel cut off switch or inertia switch is Ford. Your jeeps fuel pump power supply is ultimately controlled by the cars computer. If you suspect there is a fuel pressure issue the first step would be to actually check fuel pressure with a fuel assure gauge. Or listen to see if you can hear the fuel pump run for a couple of seconds when you turn the key to the run position. If there is no fuel pressure or you can not hear the fuel pump run than the next step is to check for power to the fuel pump. You should be able to find the fuel pump harness back by the fuel tank. There will be a connector where the fuel pump harness plugs into the vehicle harness. You'll want to check for power to the pump by back probing the wires at that connector. There should be power for a couple of seconds when the key is turned on and any time the engine is cranking. If there is power the fuel pump is bad. If there is no power let me know and I'll be happy to help you with some further diagnosis.

Aug 15, 2011 | 2001 Jeep Grand Cherokee

1 Answer

Well i have replaced spark plugs,spark plug wires and rebuilt the carburetor, also replaced the fuel pump but it turns over it is getting fuel but it just don't want to start and keep running it will try...

sure the 77 models have the earyest kind of electronic ightion and it needs to be checked to see if it's working. The distruber pickup fails, the timing chain fails and the distubutor does'nt turn as the engine turns, the coil does'nt get power from the key as a connection broke or the ingine ballast resitior failed. the igtion module fails too.159097116.jpg893555968.jpg78413573.jpg337676466.jpgThis module over the life of Ford motor company has cause the physdo-yne Found On the Road Dead Antother words lots of Fords quit and the days of youre mechanics would say that blue gromet module has left another car on the side of the road.

Apr 16, 2011 | 1977 Mercury Grand Marquis

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Not getting fuel to the carburator. I have poured fuel on the carburator and it started, then it shut down. The fuel pump was replaced about 2 years ago..

check fuel pump relay on firewall passenger side if it has power and power when the key is turned on will click test power through relay to fuel pump disconnect connector at fuel tank make sure you have a good ground test for power at sending unit when key is os or in start if power the sending unit has rotten corroded wire going to fuel pump you will have to remove the fuel tank test power right at the pump if there is no power replace sending unit if power a pump use teslight one end on ground terminal and other lead on power terminal at pump if you have power replace the pump

if this is helpful plz leave a comment like and if you need more help ask once you eliminate pump good luck

Jan 16, 2011 | 1997 GMC Sierra

1 Answer

Car wont start engine will crank

One of those relays supply power to the injectors. They fail, as well as the fuel pump relay, rpm sensor, and the main pump. Have you checked the trouble codes in the engine or ignition computers?


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1 Answer

While driveing vehicle lost power

GM cars use a fuel pump relay. It is a weak link on many year's GM cars and trucks.

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