Question about 1994 GMC Jimmy

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The truck will turn over the fuel pump comes on but the truck will not crank up

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Suspect engine coolant sensor. ets up a rich fuel mixture like the old cars needed to start. The intake air temp works with the coolant sensor Good Luck, Ned

Posted on Sep 28, 2009


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I have a 2005 Blazer ZR2, the fuel pump was not turning on. I had the pump replaced. It ran for 1 day then the next day the pump was not coming on again. I tried a new fuel pump relay...still no pump...

Does it have spark ? If so it's nothing to do with the crank sensor ! Does your blazer have a tachometer ? does it move when cranking the vehicle ? If so , it's not the crank sensor ! How to test an electric fuel pump GM CPI case study

Feb 11, 2015 | Cars & Trucks

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I have a 1991 Nissan 300ZX and when I turn the key on the fuel pump will not keep pumping please help

When you turn the key to on, not start, the pump should come on for about two seconds and then shut off. It won't come back on until the car is being cranked. Then it should be on, and remain on when the car is running.
If the car won't start, and you suspect a fuel or fuel pump problem, the best way to check it is have the fuel pressure tested. Correct pressure at the injectors is critical for the engine to get enough gas to run proper.
If you don't want the pressure test, and only want to verify pump is working, then break into the fuel line somewhere convenient and see if gas spurts out when you are cranking the engine over. If it does, pump is working. If no gas comes out, line is plugged or pump is not working. To test for power to the pump, a mechanic would check for power at the fuel pump connector while the engine was being cranked.

Jan 12, 2013 | 1991 Nissan 300ZX

1 Answer

My 1981 mazda rx7 turns over but will not crank like it's not getting any fuel.

Check operation of fuel pump. Remove fuel hose and crank. Is there any pressure? Is there fuel coming out?
If not, then check fuel pump for power. If no power, then check any relays.

Nov 11, 2012 | Cars & Trucks

1 Answer

98 dodge ram no fuel pressure with key on but will start with extending cranking

There is a check valve inside the fuel pump module that is suppose to keep fuel pressure in the fuel line's an fuel rail . Need a new fuel pump .

Jan 03, 2018 | Dodge Ram 1500 Cars & Trucks

1 Answer

Won't start

remove the fuel inlet pipe suction till fuel comes. than crank the engine .once the fuel comes out ,connect the pipe. next remove the out-let pipe and crank the engine till fuel comes out.and also check the fitting at suction for any leakage,breakages etc...

Feb 29, 2012 | 1995 Ford Explorer

1 Answer

Cranks strongly, but won't turn over / start.

it might be the fuel pump take the output hose off of it and crank the engine and see if fuel comes out of the pump if it does the fuel pump is not the probelem. if it doesnt come out or if it slowly comes out than you need a new fuel pump

Dec 23, 2011 | 2000 Ford Expedition

1 Answer

When I try to crank my truck, it will turn over but will not crank. It sounds like it is out of gas. Some times it seems like it wants to crank but isn't getting any fuel.

replace the fuel filter if it hasn't been replaced in a while... then check to see if you hear the fuel pump come on when you turn the key, if no sound, check the fuses, fuel pump relay is on the firewall on passenger side, it should be the first relay closest to ac box, try to swap relays around if you still have nothing then replace the fuel pump

Dec 16, 2010 | 1996 GMC Sonoma

3 Answers

No fuel getting to throttle body / installed new fuel pump and filter / gas is in line but will not come out when turned over

are you geting power to the fuel pump?? On some vehicles the electric fuel pump primes when the ignition is switched on to acc (i.e when all the dash lights come on etc) and on other vehicles the fuel pump doesnt start untill you turn the ignition over to the "start" position. Id check the fuel pump was acutally getting power and go from there

Jun 30, 2009 | 1987 GMC Jimmy

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