Question about 2005 Pontiac Grand Am

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Fuel filter, fuel pump, fuel injectors...how to test

Car occasionally wont start...engine is turning over but will not start...sounds like it isn't getting any gas....need to know how to test these things and which one to start with or if there is something else i should be checking....PLEASE HELP.

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  • 328 Answers

Its very easy
first check for the fuel pump relay u should be having a spare one its not expensive you will find a chart in relay box to locate the fuel relay
car still dead after replacing the relay
open the bonnet try to locate the fuel line that hose feed your throttle body with fuel take the hose out of its place then your eye is on hose tip while a friend or any one turn your cars key just for one if the line squirted so the pump is working
replace fuel filter at all

Posted on Feb 24, 2012

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: location of crankshaft position sensor 4 cyl

41918676the cranshat position sensor is located very close to the ignition ciol pack, and it is a two wire conector, if you can't still find it remove the coil pack and should be behid it

Posted on Jun 19, 2008

luv2tango
  • 36 Answers

SOURCE: My 95 Pontiac Bonneville is not getting gas I've

What you need to do is have an assistant turn the key on (not try to start, just turn the key on) while you have the gas cap removed and your ear down by the gas tank fill tube. When they turn the key on you should hear a whirl only for 3-7 seconds. If you hear nothing more than likely you will need to change your fuel pump. Attempt this test on several tries at different times several hours apart before you **** your tank out to give it ample time to relieve any fuel pressure that may be built up thus causing your pump not to respond. BUT, if you are not getting any fuel you are not getting any pressure built up so it should be making some sound. How many miles do you have on this vehicle? 9 times out of 10, sorry to say, you'll be replacing the fuel pump. It sounds like to me that you have thourouly checked every other possible thing. Good luck my friend. Let us know how you come out.

Posted on Mar 09, 2009

  • 641 Answers

SOURCE: 1990 Pontiac grand prix bogs down, and wants to

Have you checked the ignition module? More info such as eng size would be helpful to help you.

Posted on Aug 02, 2009

beest921
  • 23 Answers

SOURCE: just replaced fuel pump and filter. Gas is still

Check to see if your fuel pump relay or the related circuit is working. Make sure you're getting voltage to the fuel pump itself.If you have any questions, I'll be happy to help!

Posted on Jan 18, 2010

  • 31 Answers

SOURCE: rough idle surging. have replaced

the best thing to do is to have a scan preformed on the engine, sounds like a mass air flow, but these parts are to costly to guess at. if the car will run ok at highway speeds of 60 mph or faster your fuel pump is ok.

Posted on Apr 19, 2011

Testimonial: "the car has been at the dealer for the past three weeks. they can't or won't give me the cause of the problem. so I am picking up the car today ."

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I have a 1997 suzuki sidekick JX 4×4 and it was running fine I had the computer checked and the o2 sensor and a calorie converter needed to be changed so I did that and it was running great and I turned it...


wont crank or cranks fast but will not start???????????????
2door or 4 doors? (wired diffr they are)
its an old car, and most fail this old. "entropy"
first off, 3 things must be good on this old engine.
1: compression. at above 150 psi, 180 warm not 80.
if compression is low an all 4 cylinders (G16b engine) the cam belt slipped, do to owers not changing belt at 60,000 miles !
2: bad spark, test for spark at all 4 cylinder yet? if bad spark
use a scan tool and see why, cranking for 5 seconds. P03xx errors?
at this point the engine runs on test fuel. does it?

3: bad fueling , too much or too little or none)
is engine flooding, spark tips wet,
no dry, and test fuel runs car for 3 seconds.
ok that means the pump is dead, or weak
caused by (again a real 60k tuneup skipped, the filter)
replace filter. omg got 30psi pump pressure,
lets say pump pressure is still weak, lets say 15psi, (failed)
i check pump voltage cranking, omg, got 8v. the wires
behind left rear tail light (2door) pink wires or ground there bad.
ok got 12vdc to pump. but is weak
i then check FPR, fuel pump reg on fuel rail. i find it is stuck wide open, a new FPR gets pressure to 30 running and 40 not running.
fixed.
no the FPR is ok, the pump is bad. (last, pumps is last in my book as the work is long and hard, and why do that if , its not bad. as most all seem to do on forums.)

no start has 50 causes.
see scotty do the TEST FUEL test.

http://www.fixkick.com/nostart.html


we dont know what checked filter and pump means.
1: filter is there and looks pretty?
2: pump makes noise?
we use a fuel pressure gauge for 20 bucks.

all 9 pump tests are here, and the there tests for injector leakdown
and injector balance tests. all off one tool.
not starting can even be, leaking injector, folding 1 cylinder bad.

http://www.fixkick.com/INJECTORS/pump.html

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Sounds like you may have fuel filter problem. you may want to check the pump and filters located in or near the fuel tank.
Go directly to the source ( Fuel Tank, Pump, Filters, Fuel Pressure Regulator and Injectors )
You may have water or grit in the fuel
Hope this helps

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sounds like the injectors are not getting a signal to squirt or no fuel . Have a pressure test done on the fuel manifold to check pump, pressure regulator pressure and filters.. check injector connection to ECM

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