Question about 1996 Chrysler LHS

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No power to fuel pump on 1996 lhs power to relay but not to pump

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  • 18 Answers

Look for fusible link in wireing ..

Posted on Oct 25, 2009

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1 Answer

1996 Lexus 400 where fuel reset


To answer your question specifically it would be no. There
is no inertia switch that feeds the fuel pump that can be turned off or reset . The engine control computer turns on a series of two different relays to control power to the fuel pump. When in the start position the circuit opening relay and the fuel pump relay or both energize causing the fuel pump to run at full pressure or fast speed. From there the engine control computer determines which demand is on the fuel pump and either turns off the fuel pump relay and leaves
the circuit opening relay on to supply power through a resistor to slow the pump down for less demand. The EFI main relay is the main supply relay to both of these sub relays. The fuel pump is powered up ultimately by the 20 amp EFI number one fuse. All of these components are located in the fuse box under the hood. If the circuit opening relay is not working it's powered up by the 10 amp
ignition fuse inside the vehicle. It's unlikely it is the 10 amp ignition fuse because that powers up a lot of other things also.

May 16, 2015 | 1996 Lexus LS 400

1 Answer

I have a 1996 mustang v6 no power to fuel pump. Bought used fuel pump relay still have np power. Safty switch is good. Unpluged fuel turned switch on and i have constant power of 9.52 volts plug in pump...


9.5 volts sounds like the power coming from the gas gauge.
I am showing a relay module with the fuel pump and pcm relays built in along with two other relays. The fuel pump relay should not be accessable. In most cases the pump relay gets power from a 20amp fuse and the computer grounds the relay when needed. Power goes from the pump relay to the inertia switch then to the pump. So the inertia switch should be hot when the pump relay is activated.

Jun 12, 2013 | Cars & Trucks

1 Answer

Start up and die


If it will eventually start and run, I would check the fuel pressure at startup. The fuel pump relay provides power to the pump for 3 or 4 seconds and if the computer does not "see" oil pressure it will not continue to power the pump. That is to prevent a fire in a wreck.

Jul 27, 2012 | 1995 Chrysler LHS

1 Answer

No power to fuel pump on 1996 gmc jimmy


The fuel pump fuse and the relay are under the hood in the relay center, check them they are clearly marked.

Jul 06, 2012 | 1996 GMC Jimmy

1 Answer

Does the fuel pump on a 97 chrysler lhs make sound when the key is on?


check the fuses for the fuel pump then if its good check the wiring for the system.there is also a pump relay in the system to check,if there is no power to the tank unit then changing the pump is not going to fix the problem.

Oct 23, 2011 | 1997 Chrysler LHS

1 Answer

1995 CRYSLER LHS,WONT START AT ALL,TRIED CHANGING SENSORS,FEUL PUMP,COIL PACKS AND COMPUTER BOXES,JUST WONT START?ANY IDEA?


If it is cranking with out turning over I would check the fuel pump and ignition relay, crank and cam sensors.
Basically you need to figure out if you have a spark issue or a fuel issue. (as long as you didn't have a serious overheating problem). One way to help you figure this out is by spraying in some starting fluid while cranking the engine. If it starts you have a fuel problem, if nothing then you have a spark problem (assuming you didn't blow the head gasket from overheating and was running normally before this happened).
Based on what you've already done here are my recommendations:
No spark: check ignition relay
No fuel: check fuel pump relay (aka shutoff relay, aka fuel pump shutoff relay), crank and cam position sensors, fuel filter.
There is also one other possibility, that the timing belt snapped. You would need to remove the timing cover to check this.

Feb 05, 2010 | 1995 Chrysler LHS

1 Answer

1996 CADILLAC DEVILLE, NO POWER TO FUEL PUMP


Check for a burned fusible link under the hood. If you have power at the fuel pump relay, you could have a bad ignition switch or bad oil pressure switch...accordianman

Dec 15, 2008 | 1996 Cadillac DeVille

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