1999 Cadillac Seville STS Blown Head Gasket, Need advice

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1999 Cadillac Seville STS Blown Head Gasket, Need advice

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1999 Cadillac Seville STS Blown Head Gasket, Need advice - 1/9/2007 5:08:33 PM

tomaxx313

Posts: 1
Joined: 12/28/2006
Status: offline

Hello all,

I know what your going to say, "Blown head, Get a new motor", however I have purchased this car with 109,000 miles on it and can not afford to buy a new motor, yet I purchased the Thermagasket product from RX Auto of whom has guranteed that this product will work. This is the problem. I need to diagnose how the gasket blew in the first place prior to puting the product in. The heat does not come on and this car has not been touched by mechanic. Pleas help me figure out how the head blew so it does not happen again. Thanks

Post #: 1

RE: 1999 Cadillac Seville STS Blown Head Gasket, Need a... - 1/9/2007 8:18:07 PM

FLCaddytech

Posts: 507
Joined: 6/22/2006
Status: offline

http://www.cadillacforum.com/m_3901/tm.htm

(in reply to tomaxx313)

Post #: 2

RE: 1999 Cadillac Seville STS Blown Head Gasket, Need a... - 1/9/2007 11:31:01 PM

fleetwood chuck

Posts: 3
Joined: 12/28/2006
Status: offline

HELLO, first thing to do is check the radiator make sure it is clean in side if was pluged it could of caused the engine to over heat , this then causes one or both cylinder heads to warp from the overheating since they are aluminuim you will need to find out which side it is and remove head and have it checked for strightness and repair it then is stall anew head gasket you may have to use new headbolts,the overheating may have happend before you bought the car it is hard to tell hope this helps Chuck .

(in reply to FLCaddytech)

Post #: 3

RE: 1999 Cadillac Seville STS Blown Head Gasket, Need a... - 2/22/2007 11:32:02 PM

STSCapo

Posts: 3
Joined: 2/22/2007
Status: offline

I have a 97 STS with the exact same problem as tomaxx, no local mechanic will touch the engine, the Cadillac dealership, says to get rid of the car and that putting the bolts back in there's a 50/50 shot that it'll hold and keep it from running hot, so the work is not guaranteed, there's no way im getting rid of my baby i'm in it for the long haul. i'm thinking about gettin a new engine, so if anyone has done this or had this problem all comments would be appreciated, thanks in advance

< Message edited by STSCapo -- 2/22/2007 11:33:11 PM >

(in reply to fleetwood chuck)

Post #: 4

RE: 1999 Cadillac Seville STS Blown Head Gasket, Need a... - 11/12/2007 8:30:06 PM

STSCapo

Posts: 3
Joined: 2/22/2007
Status: offline

Gm is sending a mechanic on wednesday to inspect my car to see if the heating core exploding was due to the faulty headgaskets, i really do beleive so due to everything i've read and all the stories i've heard of the 94-97 sts blowing the bolts, and also the fact that gm doesnt even make that engine anymore, i'll post again after the inspection and let y'all know what went down. If anyone has had any experience with this please post thanks.

(in reply to STSCapo)

Post #: 5

RE: 1999 Cadillac Seville STS Blown Head Gasket, Need a... - 11/12/2007 9:16:34 PM

slowroll

Posts: 1444
Joined: 10/3/2007
Status: offline

Pulling treads is well document, timeserts can fail also. I have replaced head gaskets without thread repair. Even the 00 and later have thread pulling, heat seems to be the main factor.I saw a someone selling an improved timesert on ebay consderably larger than GM timesert maybe worth looking to.I have no experence with them, but I willing to give them a try if occasion arises.

(in reply to STSCapo)

Post #: 6

RE: 1999 Cadillac Seville STS Blown Head Gasket, Need a... - 11/13/2007 6:16:08 PM

STSCapo

Posts: 3
Joined: 2/22/2007
Status: offline

Exactly right, the heat was gettint through the thread or gasket whichever was leaking and the heat is so damn hot it bust out through what ever is weakest in the cooling system, when the heating core busted the first thing i felt was something burn my foot and then the vents started shooting out smoke, that was the firs time, the second time after the core was replaced the radiator busted due to the heat, hopefully gm replaces my engine, do you know what causes the threads to pull initially.

(in reply to slowroll)

Post #: 7

RE: 1999 Cadillac Seville STS Blown Head Gasket, Need a... - 11/24/2007 11:51:00 PM

1999frc

Posts: 11
Joined: 10/6/2007
Status: offline

not worthit, get a used engine, that is what i had to do

(in reply to STSCapo)

Post #: 8