Question about 1994 Oldsmobile Bravada

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I have a 94 olds bravada 4.3 fuel inject. won't start. fuel pump is new but isn't running. tried changing relay, still no go. 3 wires from pump, ground, pink, gray. getting approx. 11volts from pink one and .03 from gray. any ideas???

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HAVE YOU CHECKED THE ROLLOVER RESET BUTTON FOR THE FUEL PUMP? LOCATED IN THE TRUNK AREA ON THE LEFT REAR QUARTER PANEL.

Posted on Nov 28, 2008

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My 94 Thunderbird won't start until like the 4th crank, then it runs like a champ. It acts like it isn't getting any fuel. Please help!


You may be right on your hunch.
The fuel pump gets power from the pump relay for 3 seconds when you turn the key on, then no power until the engine starts. If the fuel pressure is low it could take several trys to get the pressure up to normal and the engine start.
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Hello. My 1997 Chevy Tahoe refuses to start. The problems began with a bad fuel pump. I changed. It worked. The fuel pump died again. I changed it again and it has been working. I parked it for two weeks....


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Have you cycled the key on & off with a fuel pressure gauge on the
fuel rail?

Do you have a fuel filter that isn't over 3 or 4 years old?

Have you checked for spark while cranking ? Use an old plug on the wires,
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If you removed the ducting & MAF Sensor it won't start

Tell us what you checked & exactly how that was done.

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Where is the Fuel Relay located on a 94 Oldsmobile Bravada?


the fuel pump relay is on the driver side firewall its a bracket with two relays on it. the relay closes to the fender is the one for the fuel pump. if you want to do a quick test of the relay is to run a jumper wire from orange wire to the grey wire you pump should start working.if it does work then replace the relay. if it doesnt work. run a jumper wire from the battery to the grey wire if the fuel pump still doesnt work replace the fuel pump, however if it does work you have a short in you wires. a good back yard fix for this problem is to run a wire from the battery to the orange wire. hope i didnt confuse you let me know if you need more help.

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2 Answers

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62217_isuzfuse_1.jpg
Underhood fuse block swap out relay #7 thats the ECM relay.
Ground Circuits Using a DVOM, touch negative voltmeter lead to a good ground. Touch positive voltmeter lead to each ground terminal. With vehicle running, voltmeter should indicate less than one volt. If reading is greater than one volt, check for open, corrosion and loose connection on ground lead. See ECM GROUND LOCATION table for ECM ground location.
Page 1 of 1 SYSTEM/COMPONENT TESTS - 2.6L EFI -1994 Isuzu Rodeo

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1 Answer

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Aftermarket fuel pump failure? Try "thepartsladi" store on eBay for low price GM OEM parts. Could also be wiring harness to fuel pump.

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1 Answer

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1 Answer

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2 Answers

94 olds bravada 4.3 fuelinject.


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Nov 28, 2008 | 1994 Oldsmobile Bravada

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