Had a coolant leak - Page 2 - 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 09-17-2007, 03:41 PM   #11
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i would change uim asap. i work in a shop and had to replace a motor in a 98 park avenue cause the uim leaked and bent the connecting rod on the middle rear cylinder.cost the customer 1900 to fix the car. with a rebuilt long block
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Old 09-17-2007, 03:48 PM   #12
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The initial problem was the tb gasket. and as far as if its the original UIM, I will check. I did take a dental pick to the EGR area and it was very solid, no holes or cracks that I can see. regardless, $80-$100 for peace of mind is a no brainer. Also I know the car had DEX in it when I got it in 2000, I did flush it out and have used the Prestone in it since the first day I owned the car. I am willing to bet that I do need new LIM gaskets as well. Thanks for your input gents, you guys rock!
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Old 09-17-2007, 03:51 PM   #13
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By mentioning that it had Dex.. you mean that you think you have sediment or goop in the bottom the rad?
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Old 09-17-2007, 03:56 PM   #14
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well I put in a new radiator 3 months after I got the car so probably not. when I first bought the car and flushed the system, yeah there where chunks of snot in the cooloing system. I bought the car from the service station I used to work at part time. I also know the original owner of the car so thats how I knew it had DEX and I never trust anything that is labled extended life. Hell I use Royal Purple oil and change it every 2500 miles.
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