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Old 04-10-2003, 11:13 AM
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Post Starting prob... Doesnt start.

About 2 weeks ago my car was stalling out at different speeds/rpms, pretty much randomly. And when it stalled, it wouldnt start back up. Although once it was jumped, started up fine. I finally found out it was the wire that goes from the POS terminal to my MSD brick, the screw on it was loose and was moving around, and the car would die when it came off even for less than a second.
Then the car was running fine for the last two weeks, no problems at all, when a friend asked how it was running, I got in to show him, and it wouldnt fire. I checked everything I could think of... Im thinking its most likely an electrical problem. When I try to start it up, it just keeps cranking, and wont fire. Althought it started to fire once, then cut out right after I had heard the exhaust. I checked everything from the batt to the brick to the coil to the distrib, to the plugs themselfs, Everything looks good. I cleaned all the contacts for all the wiring, still nothing. It was running fine the night before. Battery checks out good, But I tried a jump start anyways, same thing.

I have no idea whats wrong.. Any Ideas? <img src="confused.gif" border="0">
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Old 04-10-2003, 11:49 AM
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By the way... its a 3rd gen camaro
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Old 04-10-2003, 03:13 PM
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oh, 3rd gen camaro! thats why. duh :p no j/k. you said you checked all the wiring and cleaned the contacts but are you actually getting spark? try pulling one of the plugs and checking.
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Old 04-10-2003, 04:36 PM
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yup, spark from the coil, spark on every wire, new plugs, month old wires, new batt, and im still lost.
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Old 04-10-2003, 06:20 PM
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Then you have a fuel problem, flodded or out of gas? The wrong heat range plugs can also cause similar problems.
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Old 04-10-2003, 06:34 PM
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Well it wasnt starting with the old plugs, so I put new ones in, still nothing. I thought it might be flooded too, so when I swaped the plugs, I left all of them out for a little more than a hour so the gas would evap. out. And it being flooded wouldnt be to likely since I turned it off and let it sit over night, and the next morning it wouldnt fire. And its TPI, so it wouldnt be as easy to flood. But I still checked.

Also cleaned the injectors. And the alternator checks out.

Know of something else I could be missing?
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Old 04-10-2003, 06:36 PM
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Also forgot to tell ya it has a full tank.
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Old 04-12-2003, 04:21 PM
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Pickup in the distributor or coil is bad. Both can be tested, looking at them cant tell you anything. It takes a couple of things to fire up, gas, spark, or timing chain/gears bad.
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Old 04-13-2003, 09:11 AM
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Well it warmed up and dried out this weekend, and I went out and tried it, started up like nothing was wrong.
New distributor cap and rotor didnt change much.
So now I think its moisture in the fuel lines, injector problems, or fuel filter.
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Old 04-17-2003, 02:01 AM
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Again Im having the problem although much worse. It will lose all throttle controls and will slowly go down to 500rpms, then shudder once or twice, then stall. Sometimes I can start it back up right away, other times i have to wait on the side of the road for a hour or two. Although it doesnt always stall out. Sometimes it will backfire hard, then everything is back to normal. But after the last backfire, i have to bring it up to 3000rpms to get going 20mph. Complete lack of power. Afraid to say it, but maybe I should pay somebody. <img src="graemlins/pain.gif" border="0" alt="[pain]" />
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Old 04-17-2003, 02:55 AM
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When did you last change your fuel filter? Sounds more like a fuel problem so if you have a fuel pressure guage, hook it up and you will be able to verify/eliminate this possibility. Next usual suspect is your Throttle Position Sensor (TPS). If you have an ohm meter, you can check it out by metering across the two leads with ignition on. Then move throttle to see if the value changes smoothly or if it is jumping around . If my memory serves me correctly, the idle ohm value should be -.1 to +.1 and WOT should be 10 or greater. Guys that work with this stuff every day probably have these numbers at their fingertips.

Trees
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Old 04-18-2003, 06:40 PM
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I agree with you on the fuel problem, Although I havent found out exactly what it is. The fuel pressure should be around 40.5-47psi, and its at 42 at idle. Im going to change the filter tomorrow, and I checked the TPS today. It should range between 0-5 volts, 5 volts being W.O.T. And it checked out ok.
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Old 04-19-2003, 05:32 AM
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check your ignition comtrol module. I had an s-10 did the same thing your talking about and that was the culprit. When I had auto parts store check it they said it was fine put it back in same s**t so I swapped it anyway and bingo. Must be like an intermittent wiper works when it wants LOL
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Old 04-21-2003, 05:29 PM
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Hmm... didnt even think about checking that, I thought for sure it was gonna be the fuel filter cuz I (thought) i ruled out everything else, but the new one didnt change a thing. And now after the last time it backfired, my exhaust is leaking horribly where the y-pipe and the cat hook up. (time for some welding)
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Old 04-24-2003, 06:45 AM
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I admit I didnt touch the Ignition Control Module yet (been sick), but the last two days it was perfect outside and the car wouldnt start for anything. Then today I went outside and tried to start it just for the hell of it, and once again, started up without a problem. I let it Idle by it self for about 10 minutes then as I went to close the hood, it cut out. So I tried to start it again, nothing. Waited about 10 minutes, started back up... I went through that 3 times, now all it does is crank and when I push the gas down it will start to fire for half a second, then keep cranking.

I hooked up a jumper wire to read the trouble codes, although Im not sure what set of flashes mean which codes, I got 3 total codes though as follows (F=Flash, P=Pause : FFPF : FFPFF : FFFPFFF) Any more help would be appreciated. This car is driving me insane.
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