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2002 Chevrolet Cavalier Fuel Pump

Tiny
SHOPTOOLS21
  • MEMBER
  • 2002 CHEVROLET CAVALIER
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
I replaced the fuel pump and filter in an 02 cavalier still would not start so I checked to see if I had fuel at the rail but no fuel. I also check to see if I was getting fuel at the filter and no fuel at this point either. I lowered the tank to check and make sure I did not pinch the lines when putting the tank back in and no problem their either. When you turn the key on you can hear the pump prime.
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Sunday, January 18th, 2015 AT 6:09 PM

9 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
When cranking the engine is the pump running? Are you getting power and ground to the pump while cranking the engine?
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Sunday, January 18th, 2015 AT 7:30 PM
Tiny
SHOPTOOLS21
  • MEMBER
  • 4 POSTS
No, you can not hear the pump running when I crank the engine over. You hear it when I turn the key one and when I turn the key back to the on position.
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Monday, January 19th, 2015 AT 1:08 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
What was the pump you replaced doing? If you getting good power and ground to the pump and its running and no fuel comes right out of the pump. You have a blockage a pickup issue a bad fuel pump not enough gas in the tank or a polarity issue reversed.
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Monday, January 19th, 2015 AT 1:38 PM
Tiny
SHOPTOOLS21
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  • 4 POSTS
The pump I replaced was running when you turned the key on but I had no fuel pressure when I check it. Know I am wondering if I was even getting any fuel. That was something I never checked before replacing the pump. I am hearing a clicking sound from the engine compartment when I turn the key to the off position after trying to start the car. Not sure what it is, I even hear it when I just turn the key to the on position and then off. Could this maybe have something to do with it not getting any fuel?
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Tuesday, January 20th, 2015 AT 1:54 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I would like you to Check the ground to the fuel pump see if you have 2 ohms or less to ground while your cranking the engine. Then see what the voltage is to the pump while cranking the engine? Do this with the fuel pump still hooked up not sure what the clicking noise your hearing is.I want you to do the tests I asked and please let me know what you find. The clicking could just be normal a solenoid clicking etc.
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Tuesday, January 20th, 2015 AT 8:41 PM
Tiny
SHOPTOOLS21
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  • 4 POSTS
When I turn the key to the on position I have just over 12 volts. When I turn the engine over I have around 9.5 volts and that would be on the high side it jumps around quiet a bit. As for ground I have around.5 ohms when the engine is turning over. I had my meter set to the lowest setting. So I hope I test the ground correctly. I also pulled the relay switch and with the key on I had around 12 volts on two of the points. I need to make some type of jumper to check it with the relay in.
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Wednesday, January 21st, 2015 AT 3:50 PM
Tiny
SATURNTECH9
  • MECHANIC
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Make up a power jumper wire with a 10amp in line fuse and run that to the power side of the pump and see what happens? Something is really strange here even with 9volts there should be some fuel but that battery doesnt sound too charged or you have a bad battery.
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Wednesday, January 21st, 2015 AT 7:33 PM
Tiny
SHOPTOOLS21
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Well, I hooked the pump up directly to the battery, it runs but no fuel. So it sounds like the pump is bad. I also did the same thing with the old one and it also ran but did not pump any thing. Very confused at this point.
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Thursday, January 22nd, 2015 AT 2:22 PM
Tiny
SATURNTECH9
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If you have a good power and ground to the pump and good fuel source to the pump sounds like a bad new pump anything is possible.
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Thursday, January 22nd, 2015 AT 7:37 PM

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