within the past 2 months i have dumped 1500 into my 3.4l DOCH just in gaskets!!!!! Intake manifold head gaskets, and valve cover gaskets. and im still having problems with leaking anti-freeze. any suggestions???

Im assuming that the coolant is not leaking externally?

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!

do you know if the exhaust smells like coolant? try doing a compression check on it....also. they make a UV kit for coolant leaks. you add it to your cooling system..and they supply you with the light and glasses..

after a few cycles of driving. you can come back and use the light/glasses..and visually check for exterior leaking..just to rule it out.

if it is internal....possibly head gasket. it is a very common thing with the 3.4 DOHC. more than likely it is the rear head as well. you have done nothing wrong.....it happens with age.

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2001 GTP street car- GT45 turbo,Stage 4 Intense turbo cam,FMIC,150 wet, double roller timing chain, Diamond forged coated pistons 8:0:1, Diamond piston rings, cryoed L32 connecting rods, Cryoed crank, Clevite77 main bearings, Clevite77 cam bearings, Clevite77 L32 rod bearings, ARP Everything, Intense/meizere true billet Flexplate, Custom UIM, Intense oil pressure kit, Cometic 4 layer head gaskets, OE-R lifters, Cryoed L67 block, ATI turbo dampner, MUCH MORE, 6 more to choose from ASE Certified

thanks! yea its def external, ive had both the intake, and head gaskets replaced. so yea. any idea where i can buy one of these kits??

Napa, O'Reilly, Autozone, Advanced auto....any parts store pretty much.

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2001 GTP street car- GT45 turbo,Stage 4 Intense turbo cam,FMIC,150 wet, double roller timing chain, Diamond forged coated pistons 8:0:1, Diamond piston rings, cryoed L32 connecting rods, Cryoed crank, Clevite77 main bearings, Clevite77 cam bearings, Clevite77 L32 rod bearings, ARP Everything, Intense/meizere true billet Flexplate, Custom UIM, Intense oil pressure kit, Cometic 4 layer head gaskets, OE-R lifters, Cryoed L67 block, ATI turbo dampner, MUCH MORE, 6 more to choose from ASE Certified

i hate those intake manifold gaskets just my 2 cents. o did you have them replace the oils pump shaft seal?

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Justin Young
Kansas
1999 silver GTP DHP pcm,3" Cattless hogan DP,Front PEM,3.4 pulley,

no i didnt?? is that something i should ask them about

well i did an intake manifold gasket on a friends car and not even two weeks later that seal went out if you look under the throttle body almost where the tranny and engine meet you will see this cap there and there is a seal there that should be replaced while the intake plenum just to save you from having to have it done again the shaft is like a foot long so in order to get it out you must take the upper plenum off.

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Justin Young
Kansas
1999 silver GTP DHP pcm,3" Cattless hogan DP,Front PEM,3.4 pulley,

Sorry for not really adding anything to this thread but you really need to just do a 3.8 sc swap ftw. Trannyman would probably be willing to help you out.

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Steven Oliver
2004 GTP comp-g WS6. Gator and suede all around interior.
Advanced MECP certified installer, custom upholsterer.

have you inspected the water pump?