An interesting culprit to overheating
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Joined: Dec 2006
Posts: 1,461
From: Toronto, CANADA
RE: An interesting culprit to overheating
ORIGINAL: JP500
[In a car that's notorious for head gasket issues, it's very unsettling to sit in rush hour traffic on a 100 degree day with the Air Conditioner blasting as your temperature gauge is too high. I'm thankful because the warmest days of the year are behind us in the Northeast.
For now I guess I'm going to hold off on doing anything else.
[In a car that's notorious for head gasket issues, it's very unsettling to sit in rush hour traffic on a 100 degree day with the Air Conditioner blasting as your temperature gauge is too high. I'm thankful because the warmest days of the year are behind us in the Northeast.
For now I guess I'm going to hold off on doing anything else.
I agree that 220 degree readings are ok because the protection mode kicks in at 248 degrees. The fact that the protection mode did kick in points to a problem however. Northstar water pumps are not like a conventional water pump on say a Chevy small block and I have seen them gobad and barely show any signs of leakage or fault. The pump is on the drivers side of the engine not on the passenger side with all of the driven accessories so even if you were looking for a leak you probably are looking in the wrong place.
I suspect the water pump is either bad or going bad based on everything posted here.
Joined: Sep 2007
Posts: 2
RE: An interesting culprit to overheating
Hello Jp500 any updates on the overheating problem u r having??? I have 97 deville 95k and i am having similiar problems when i am sitting in traffic on my way to work. I also like in the boston area so i am in traffic everyday going to work. My caddy will creep up to about 226 degree then will kick back down to 217 and then go to 205 and stay for alittle bit then jump back up slowly by 4to5 degree each time. Wondering if my fans are not moving as fast as they should on something wrong with what ever sensor or sensors call the fans to engage and at what degree. please advise with any news. Yeah and Olsen Cadillac is very awesome!!!!! When i purchased my 97 deville 1 yr ago i took it to them to look everything over and they were sooooooo helpful and polite. I also got 3 phone calls and a letter asking if their service was good or not. Very pleased
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Joined: Dec 2006
Posts: 1,461
From: Toronto, CANADA
RE: An interesting culprit to overheating
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Joined: Feb 2007
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RE: An interesting culprit to overheating
Just to reply, everything's running ok in my car now.
Thankfully the weather has cooled off considerably. After olsen diagnosed the car I pretty much stopped worrying about it. I ran all the codes and nothing major came up. I really can't say for certain whether engine protection mode ever came on; I just noticed a substantial reduction in power as though the car were running on four cylinders.
Thankfully the weather has cooled off considerably. After olsen diagnosed the car I pretty much stopped worrying about it. I ran all the codes and nothing major came up. I really can't say for certain whether engine protection mode ever came on; I just noticed a substantial reduction in power as though the car were running on four cylinders.
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