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Pontiac Forum: 1996 Grand Am 2.4L - Coolant in Oil, Rough Idle
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Old July 5th, 2018, 03:03 PM
Superman32 Superman32 is offline
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1996 Grand Am 2.4L - Coolant in Oil, Rough Idle

I have a 1996 Gramd Am 2.4L.

I had a check engine light code P0112. It is an air sensor code, but didn't have any issues except for a little rough idle.

I ordered a sensor and while I was waiting for it to come in, I was driving to work and getting on the onramp, the car went to upshift and then the power just died. I thought the car itself had stalled, but it just lost a lot of power. When I got to a stoplight it had a struggling idle (it was choking out).

I got to work and checked the coolant and oil and notice some coolant in the oil. I drove it home and haven't used it since.

I'm thinking the problem is the headgasket, but the only issues I know of is the coolant in the oil and bad idle. It doesn't exhibit any other symptoms of a blown head gasket. Is that possible, or is there anything else it could be?
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Old July 5th, 2018, 03:22 PM
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melsg5 melsg5 is offline
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do a compression test and get a coolant hydrocarbon test kit to see if the head gasket is blown
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Old July 6th, 2018, 07:18 AM
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92 Sunbird LE 92 Sunbird LE is offline
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What engine,? If V6 , they are famous for intake manifold gasket leaks.

Felpro gaskets and new intake bolts are required to fix.

Doug in P.R.
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Old July 6th, 2018, 12:18 PM
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He stated a 2.4 in his post, title and first line, thanks.
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Old July 6th, 2018, 02:55 PM
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https://repairpal.com/intake-manifol...ngine-oil-959#

Both 2.4 and V6

Doug in P.R.
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Old July 6th, 2018, 04:29 PM
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Didnt know that, thought it was only the V6, thanks.
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Old July 8th, 2018, 03:12 PM
Superman32 Superman32 is offline
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It seems forgot to mention, when I checked the oil, I also saw some red debris (dried rubber type material), which I figured is gasket material. I heard about Grand Ams having the air intake issue, so after I saw the debris, I thought it may be that gasket, but after removing the air intake and checking the gasket, the gasket looked good and it wasn't red.

So there are quite a few things that are leading me to believe that it is a gasket, and in particular the head gasket. But the only issue is the lack or typical symptoms for the head gasket. I was just wondering if there were any ideas for such a situation, since it seems to be an uncommon one.

I have had the car since it was new and it is now 22 years old, so now maybe it is time to replace the head gasket. It has a valve cover leak somewhere, so I was already planning to fix that and from what I know, once you're there, the head gasket isn't too much work past that for this particular vehicle.
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Old July 8th, 2018, 06:25 PM
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Have the head checked for cracks , might have internal ones and straightness while you have it off. (Piece of mind-priceless )

Doug in P.R.
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Old July 13th, 2018, 02:14 AM
Superman32 Superman32 is offline
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Thanks, that's good advice, Doug. I want have everything taken care of while we're down there.
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