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Camaro runs great sometimes and sometimes nothing

I have a 1991 Camaro 3.1 some times the car will crank and run perfect drive it for 30 minutes park it then go back outside to crank it and it acts like it wants to crank but it wont. has plenty of fuel pressure, getting fuel to rail but not letting it through injectors when this occurs, and also getting fire, has the right fuel pressure makes no sence to me put new computer map sensor still doin same thing please help

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  • Cars & Trucks Master
  • 8,549 Answers

Hi, this can be caused by an issue with passkey. Do you have a resistor pellet in your ignition key? Does the security light stay on when the engine fails to start? If yes, I recommend you bypsss passkey by cutting the wires and installing a resistor of the key's value at the bcm to fake it into believing the correct key is in the ignition.

Posted on Jul 17, 2017

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: 98 chevy camaro wont start

check fuel pressure regulator

Posted on Dec 06, 2008

  • 188 Answers

SOURCE: Broke my map sensor car wont stay running

It sound like the fuel pump or fule filter???? You and pull positive post off battery for a minute and put back on. this will reset computer.

Posted on Feb 14, 2009

  • 12 Answers

SOURCE: 95 camaro wont start.

did you check for spark? are you getting a rpm signal from your crank and/or cam sensor?is it a six or eight cyl?

Posted on Jul 29, 2009

morrison888
  • 4 Answers

SOURCE: 1989 Chevy Cavalier z24

i think you have the rong elecricale cords
or batterys or its oil

Posted on Aug 10, 2009

nyrtist
  • 5 Answers

SOURCE: 1991 camaro rs v6 3.1 cranks but doesn't continue to run

Here are a few other areas where you may want to check if applicable to your current situation.
I hope you can find out what the culprit is as I know how frustrating it can be.Here are a few other reasons why your car may not be starting besides what you have already mentioned.
COMMON CAUSES OF NO COMPRESSION
Broken timing belt or chain (Belt failure will prevent the valves from opening. The engine will NOT run if the belt has broken, and it may have bent valves or other damage as a result of the belt breaking).
Broken camshaft (This can happen on an overhead cam engine if the engine has overheated, warped the head and seized the camshaft).
Plugged catalytic converter (Creates a restriction that causes exhaust backpressure to back up. Engine may start but usually dies within a minute or two)


I guess the most logical one in your case, after reading your story regarding when it happened would be a timing belt.

I had something similar to this happen on my '86 blazer. I was driving along and then "blip", at 55+ mph happily cruising along, the engine just cut out on me and wouldn't start again.
It would crank but wouldn't start. It ended up being an ignition module but you said they already changed your distributor so they more than likely checked or changed the module also.
Good luck with this!
Jim.

Posted on Aug 23, 2009

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