98 Bonneville head gasket - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-15-2007, 01:21 AM   #31
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Will this engine work in my 98? It is from a 2001 Grand Prix GT
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Old 05-15-2007, 02:31 AM   #32
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Quote:
Originally Posted by jumackey
thanks for the help. the engine turns over with ease by manually cranking it. so thats a good sign I suppose. now I just ordered the APN UIM. But maybe i'm blind but is there a website that I can order a aluminum LIM gasket? Or do I have to go to a pontiac dealership directly? I'm ordered new copper spark plugs and the 180 Tstat. anything else I should do or check or replace since everything is already apart? I was thinking maybe new fuel injectors?
Call a few GM dealer parts departments with the part number given in Techinfo 38. That number may be superceded - if so get the newest ones. Some dealers charge $59; others want $80. Be prepared to hear the gaskets won't work in your car, or are not spec'd for your car. Ignore that - they will.

Get a package of Dorman "Help" line plastic coolant elbows.

If you are running Dex, flush it out and re-fill with "mixes with any" according to the method given in Techinfo 100

Flush the oiling system as described earlier.
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Old 05-15-2007, 02:35 AM   #33
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Quote:
Originally Posted by PogiGreg
Will this engine work in my 98? It is from a 2001 Grand Prix GT
Ooooh, that looks nice. Wish I had one. You will need to change some of the external parts like mounts or brackets and maybe a manifold (?) but the long block should be identical.
Just swap whatever external parts differ and you should be home free. Someone will correct me, I hope, if I am wrong.
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Old 05-18-2007, 03:24 PM   #34
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just got the parts and everything went back in smoothly... Now I just have to add coolant and oil. so I was wondering how do I go about the coolant thing I have to drill A hole where??? And since it was hydrolocked do I have to do anything special before I start it I manualy turned the crank when I had the intake manifold and spark plugs off and I blew air into it too. anything else before I try to start the car? I just feel like I'm missing something....
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Old 05-18-2007, 06:51 PM   #35
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ahhhh It won't start.... it turns over just fine but it doesnt catch ad start... seems like its not getting gas.... Any ideas? I'm so lost I just dont know what to do
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Old 05-18-2007, 07:47 PM   #36
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have you checked fuel pressure?
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Old 05-18-2007, 08:19 PM   #37
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See if you have fuel at the rail by turning on the ignition, then removing the cap and depressing the shrader valve on the fuel rail. Cover it with a rag and watch your eyes - when the pressure is good, it will squirt fuel.

Check the routing of the spark plug wires to make sure they are correct.

Lift off each wire one at a time from its coil tower and hold the wire close to the cap to check for spark while someone cranks the engine. Check to see that every coil tower is making spark. You might have to insert a conductor in the wire socket to get close enough to make the spark jump.

Sometimes the plugs just get wet from residual coolant and don't want to fire.
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Old 05-18-2007, 11:32 PM   #38
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Hooooo RAAAWWWW YES!!! It works just great!! I took them spark plugs out and my new spark plugs were super dirty. fired right up! I'll be the bazillionth person to say for the help couldnt have done it without the words of wisdom. I learned alot about engines!

So one final question if there was acid breakdown what are the signs?

My 98 bonneville with 110K cost me a total of 267$ not a bad deal at all!!!!
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Old 05-18-2007, 11:34 PM   #39
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rod will start knocking and then fail, seizing the engine and/or putting a whole thru the block. Oil pressure may drop as the bearing wears down.
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