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cranks but wont start

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Old 06-21-2009, 10:58 PM
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Car: 86 Camaro iroc-z28
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
cranks but wont start

im back again, just after a month with a new waterpump the Iroc is acting up again. anyways, i got off work today and waited in the car a bit to warm it up and made a 10 minute freeway drive down to the city to pick up my father, while there i didnt turn off the car, and we drove back another 10 minutes on the freeway. i didnt go to fast, maybe 80 to 85 at most, there was a burnt smell before i got home, but it smelled like burnt brakes more than anything, but it could be a burnt wire. anyways i pulled in the car and parked it. i went inside for about 20 minutes and i got back in the car and turned the key, but after about 5 seconds of cranking it. nothing happened. i try again, nothing. i open the hood. coolant is good. spark plugs wires look fine from what i can see, no fluids spilling or leaking, looks fine. crank it again, still wont turn on.


now my question is what couldve gone bad? ive been using it as my daily driver for acouple months now and have had no problems other than the waterpump. but the mystery is why would it not turn on? even though i had just driven it 20 minutes earlier with no problem?

heres a list of new things put in the car

IACV
alternator
battery
waterpump
radiator
fuel pump
thermostat
new plugs (well 2 are new, the others i couldnt get off to replace them)
new wires for the most part
cap and rotor
ignition coil
Old 06-22-2009, 07:37 AM
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Car: 1985 Pontiac Trans Am
Engine: 355 with stuffs.
Transmission: 700R4
Axle/Gears: 4.10 Posi
Re: cranks but wont start

Does the car fire up after it's been sitting a while?

Have you pulled a plug to see if it's getting spark to it?

Have you checked your fuel pressure with the key on and engine off?
Old 06-22-2009, 02:10 PM
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Car: 86 Camaro iroc-z28
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: cranks but wont start

Originally Posted by Quick_Trans_Am
Does the car fire up after it's been sitting a while?

Have you pulled a plug to see if it's getting spark to it?

Have you checked your fuel pressure with the key on and engine off?

yes, it fired up faster than usual this morning. i havent pulled a plug yet, i pulled one acouple days ago and it had no unusual wear. i dont have a fuel pressure tester. also if it has anything to do with it, its been wasting lots of gas, more than usual
Old 06-22-2009, 02:29 PM
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Car: '92 Camaro
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Re: cranks but wont start

Did you try unplugging the cold start sensor? I've heard this will stop the car from starting up when hot...

pic in this thread: https://www.thirdgen.org/forums/tech...does-have.html
Old 06-22-2009, 03:21 PM
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Car: 86 Camaro iroc-z28
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: cranks but wont start

Originally Posted by racethesunlive
Did you try unplugging the cold start sensor? I've heard this will stop the car from starting up when hot...

pic in this thread: https://www.thirdgen.org/forums/tech...does-have.html
i think the only problem with that is that i dont have a problem starting the car once its sat for a while. well its kinda wierd, if it sits for alittle while it can still start up, but i let it sit for too long like half an hour or 20 minutes it wont want to start. so if it were the cold start injector sensor, wouldnt it not matter since it has no problem starting when cold?
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