Engine won't start?

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Sounds like the ignition switch may be wearing. Or the computer relay is not kicking in and priming the pump and redying the sensors to be ready for the crank.

I would just turn it to run then start.

Lets the engine prime, and is easier on the engine and the starter to engage.
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Thursday, July 30th, 2020 AT 5:12 PM (Merged)
Tiny
TROYLESLIE
  • MEMBER
  • 4 POSTS
  • 1996 PONTIAC GRAND AM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 88,000 MILES
My son's Grand-Am won't start and hubby thinks it's the computer or switch and is just gonna buy a computer whether it's the actual problem or not! When you turn it on, it turns over like it's gonna start but then acts like it's not getting any fuel after the initial starting. Then, you have to turn the switch completely off before trying to start it again, otherwise it won't even act like it's gonna start. He's a pretty good problem solver and dianostic mechanic but this one's got him puzzled. When it was in our driveway, after getting it towed here, he got it going and drove it to work the next day and after work, nothing. Not starting again and that's where it's been. Please help! Son needs his car and hubby needs some peace!
Thanks!
Leslie
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Does it have spark? If so, try shooting a little carb cleaner in the throttle bore to see if it tries to start, if it does it is fuel related. Can you hear the fuel pump run for a few seconds when you first turn on the key?
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
TROYLESLIE
  • MEMBER
  • 4 POSTS
The car will start just for a few seconds. When you turn the switch on, every warning light on the dash comes on and stays on. The fuel gage stays on empty but has plenty of gas. When he drove it to work, it was running fine but all the warning lights stayed lit, gas hand remained empty and RPM hand didn't work. It will start every time you try as long as you turn the switch completely off each time you retry but it only runs about 3 secs.
Hope this helps!
Leslie
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Considering the dash lighs stay lit, it could be an ignition switch. He drove it to work. So it stays running?
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
TROYLESLIE
  • MEMBER
  • 4 POSTS
When it first stopped on my son, we had it towed to our house and hubby tinkered with it for about a day, doing nothing specific, and it started up. So he drove it to work the next day in case it was to break down again but it did fine. Then when he came out at the end of the day and got in it to come home, it wouldn't start again and the parking lot is where it's been ever since. He went to work on it there the next day when he was off work and actually used a whole can of the starter stuff sprayed into it but it didin't help. It would rumble when being sprayed but when stopped, it would stop. When you turn the switch completely off and then try to start it, it rumbles like it's gonna start right up but then doesn't and all the warning lights on the dash come on but don't fade away like they're supposed to when you turn the switch on. And then to be able to try to start it again, you have to turn the switch completely off and then back on cause if you just try to turn it over again without 'resetting' it, you get nothing. 'Resetting' being referred to turning the switch to the full 'OFF' position. All the warning lights coming on is what made hubby think it's the computer and that it's also impeding a connection to keep it running once started. It's like the switch is starting it but there's nothing tied in between to keep it running:if that makes any sense. My hubby said I'm just gonna confuse you guys and you'll never be able to help. If so, I do appoligize :-)
Leslie
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
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LOL. So it does run when carb cleaner is spraye dinto it? I fso, the fuel pumnp is most likely the problem. Check for power at the fuel pump when key is first turned on, it will go away after about 3 seconds. Does this car have a security system? If so try this also

GM PASS LOCK RELEARN- Ignition to "run" position, try to start and let key return to "run" position
Approx ten minutes security light will go off
Turn key "off" and wait 5 seconds
Repeat 2 more times for a total of 3 relearns.
Turn key off, then start it
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
TROYLESLIE
  • MEMBER
  • 4 POSTS
The alarm had to be reset. Now it runs but no gauges work and all the warning lights on the dash stay on.
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
NOBRAINS_ATALL
  • MEMBER
  • 3 POSTS
  • 1996 PONTIAC GRAND AM
1996 Pontiac Grand Am 6 cyl Front Wheel Drive Automatic 225k+ miles

sometimes when I get into my car and turn the key to the on position, ill hear a clicking noise from the passanger side close to the dash board. When this happens. The car will not start, it will turn over and sound like it wants to but does not. If I wait anywhere from 10 minutes to a day and try again, it will start perfectly. I have no clue what is wrong with it. I recently replaced the alternator and battery, and I did the head gaskets in the winter of 2006. Any help would be great cause me and my father are dumbfounded.
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Do you have anti-theft?

HAve you tried a different key or is it always the same one?
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
NOBRAINS_ATALL
  • MEMBER
  • 3 POSTS
Uhm. Yeah I tryed a difrent key. Today I took another look and it seems to be the fuel pump relay. So I tryed switching it for the a/c relay(because my a/c doesnt work neways. And it started no problem. So I got a quote for a new fuel pump relay at my local dealership and its 42$ WTF! Lol.
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
SERVICE WRITER
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Cool!

PArt prices can be just downright outrageous. Glad to hear you nailed it anyways. Antitheft systems can be a real pita!
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
NOBRAINS_ATALL
  • MEMBER
  • 3 POSTS
Yeah thanks. I mean im only a 17 year old teenager. So I dont know everything about my car. So im glad that I weas able to find the problem. It seems to be running fine now.I just have to figure out how to adjust the idle now. Lol. My dad sayd there is suposed to be a thing like on brakes for a bicycle to adjust it. But tis not there. Lol. For now I have a pull strap around the throtle body keeping tention on the idle to make sure it doesnt stall while im driving lol
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
SERVICE WRITER
  • MECHANIC
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Don't feel bad.I'm 46 and don't know everything about them either. You sought out to fix and you suceeded, be proud of yourself.

Idle is computer controlled and shouldn't be played with. Does it stall all the time, just when it's warming up? Any other strange performance issues?
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
JBAILEY1987
  • MEMBER
  • 1 POST
  • 1996 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 180,000 MILES
I have a 1996 v6 pontiac grand am that with start for a minute but won't stay running. The plugs were replaced a year or two ago and the plug wires were just replaced a week ago. I have replaced a few altanators in this car as well but im not sure if its another altanator or if the coil packs are bad in it. Any advice would be vary helpfull. Thank you.
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
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Check fuel pressure with mechanical gauge and spark with spark tester. Most likely one or the other.

If OK then could be EGR or a bad sensor.

If you are not getting any error codes, then fuel pressure or spark would be most likely.
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
FARMBOY5582
  • MEMBER
  • 3 POSTS
  • 1996 PONTIAC GRAND AM
Hey thanks for any help you can give in advance. Ok I have a 96 Pontiac Grand Am GT 4 cylinder automatic with about 120,000 miles on it that will not start. It will turn over fine but will never start. I checked the plugs and I am getting fire, I cracked the fuel intake line at the motor and I am getting fuel to the motor when you turn the key switch on and the fuel pump turns on. I disconnected one of the fuel injector plugs and checked to see if I was getting a good ground and I was. I tried to see if I was getting power to my injectors and I was not but I am not sure if they pulse so fast I would get a signal on my fluke meter. I checked the air flow and I get plenty out the exhaust. Not sure where to go from here. Any help would help.

Thanks
Zach
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
How did the plugs look?

Can you get a fuel pressure gauge to find out the real fuel pressure spec is?

2.4?
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
FARMBOY5582
  • MEMBER
  • 3 POSTS
The plugs did not look great but they were sparking when I grounded them to the chassis. I do not have a fuel pressure gauge all I could tell you is that it did have a pretty good flow when I cracked the fuel line. Do you think maybe it could be a clogged fuel filter or bad plugs? The fuel pump is only about 3 months old and the spark plugs are old but wouldn’t they fire at least every once in awhile even though they are old. Not sure of engine size will get it for you ASAP.

Thanks

Zach
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
What I mean about the plugs are:
How is the gap compared to spec, Were they black and sooty, white, dry, wet with fuel?

The fuel pump pressure is critical, if it isn't in spec, it isn't good. This you have to verify. What brand pump?

The filter should have been replaced when the pump was done. HOw old is it? The plugs should be firing consistently and strong. If there is any question about them, replace them. I would use autolites, and go by the correct application.
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Thursday, July 30th, 2020 AT 5:13 PM (Merged)

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