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#1
10-07-2005, 10:43 AM
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95 grand am
I know nothing on pontiacs most of my years were spent on dodge and old timers 80s. So i will just cut and paste his email to me.
"""""our little mech buddy :-) could you find any specs on maintenance or change out mileage for fuel injectors on a 1995 Pontiac grandam with quad 4 :-) I have been slowly losing this battle with the little red car and yesterday lost the whole battle. it was starting and doing good till it ran for more then 20 min. then if you shut it off it would not restart. but once it cooled down it would. I changed the plugs (way past due) and fuel pump and filter thinking any of these may do the trick but yesterday it started to come to work but is still sitting at work till I tow it home. dead dead dead :-) the only thing I can think of is the fuel injectors are all four plugged or bad? can this happen. thanks"""""" So um ya I honestly have no idea  i havent been up to look at it but i was thinking a sensor of sorts. Just wanted to get prepared for what im looking at before i went up there empty handed.
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#2
10-07-2005, 01:10 PM
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Sounds like a Crank Position Sensor going bad, I've heard when they start to go they will be ok until they get hot. Its on the front side of the motor, above the oil filter, in the engine block, below the intake manifold. They normally break getting them out, since the plastic swells up in the block, held on by one bolt & has a wire harness hooked to it, $18.99 at autozone. Try roatating it when pulling it out and maybe you will get it whole, if not you have to break it up until you get to the o-ring, then it pulls out easy. Good luck and let us know if this fixes it or not.
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#3
10-07-2005, 09:45 PM
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I agree with it being the cps, if it was an injector problem it would be happening from the beginning, not when the car warms up. Be careful changing the cps, if it breaks make sure you don't drop any pieces inside the motor.
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#4
10-08-2005, 10:35 AM
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Re: 95 grand am
The other problem with the Quad-4's are the coil housings and modules. They sit in the center of the
cylinder head, and over time get hot and fail. The coil housings can develop carbon tracking between the cylinders causing mis-fires and no-starts. While you're in there, you should replace the boots that connect the coil housing with the spark plugs.
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