my car is eating the anitfreeze - Page 3 - 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 04-02-2005, 09:56 PM   #21
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It'* only for Dex-Cool.
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Old 04-03-2005, 11:03 AM   #22
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I've solved many of cooling system minor leak problems with this GM tab
(Bars).
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Old 04-03-2005, 12:55 PM   #23
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In the 4.1, 4.5 and 4.9 caddy engines these tabs were required, I think the same went for some of the 4.3 engines among a few others... This was not required on the 87-99 bonnevilles... The only leaks I have ever had on my cars were either the upper intake on the 95, or the water pump seals in both cars...



I'm sure tho the tabs will help with minor leaks with good sucess...

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Old 04-03-2005, 10:31 PM   #24
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Quote:
Originally Posted by Bob Dillon
"speaking of coolant.....mine'* brown!!!-ish....Should I flush it?. "

Yes, right after you change the head gaskets. One or both is leaking combustion gases into the coolant.
whoa....i'm sooo hoping thats not the prob cuz head gaskets are no fun....but i'll look into getting it flushed ...
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Old 04-04-2005, 10:54 AM   #25
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Head gaskets going out on a 3800 are very rare...Almost unheard of... I have yet to see a 3800 crak a head either...

I have seen the old 3.0 and 3.8 Buick V6'* crack heads when severely overheated... But even then they still did not blow head gaskets...

Are we sure the water/coolant isn't just rusty water? Have it flushed and see if that does any good..

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Old 04-04-2005, 10:58 AM   #26
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Probably a little late, but....

When my upper intake went, she didn't spill a drop of coolant. I was just suddenly running hot, out of coolant, and the next time I tried to start her (Hoping against hope, since I was 250 miles from home in Sioux Falls) she wouldn't even crank. Hydro-locked!! Still not a drop of coolant on the outside of the engine.

$1200 later for a brand new upper and "New and improved" lower intake (and dealership labor) she was back up and running.
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Old 04-04-2005, 10:59 AM   #27
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Quote:
Originally Posted by MOS95B
Probably a little late, but....

When my upper intake went, she didn't spill a drop of coolant. I was just suddenly running hot, out of coolant, and the next time I tried to start her (Hoping against hope, since I was 250 miles from home in Sioux Falls) she wouldn't even crank. Hydro-locked!! Still not a drop of coolant on the outside of the engine.

$1200 later for a brand new upper and "New and improved" lower intake (and dealership labor) she was back up and running.
Ouch.... $1200... Woah... I hope there was some gold in this for you..

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Old 04-04-2005, 11:05 AM   #28
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Yeah, that'* what everyone said when I first posted this. But I did go ahead and opt for the brand spankin' new lower intake while they were in there. That, and it was a GM dealership, so labor was pretty high.

Got a really good deal on the rental car, tho! So it kindabalanced out. Thank God for Credit Cards, tho.....
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Old 04-04-2005, 01:51 PM   #29
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When coolant disappears it goes somewhere. Either inside or out. Get that determined. Fill it up, run it and look. It'* somewhere like the others have said.

Brown Coolant - Flush and freshen. Your cooling will probably increase.
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Old 04-04-2005, 08:50 PM   #30
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I want to thank everyone for the info, It was my intake manifold, and right now see at the doctor'*, it went on Saturday. Hope my problem answered some others, thank again, by the way mine 90,000 miles before it happen.
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