Cooling System Diagram - Chevy Impala SS Forum
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post #1 of 14 (permalink) Old 04-30-2011, 12:10 AM Thread Starter
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Cooling System Diagram

Does anybody have the diagram of the cooling system? Could not find it in the FSM. Thanks.

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1995 Cadillac Fleetwood Brougham 108,XXX miles.
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post #2 of 14 (permalink) Old 04-30-2011, 12:18 AM
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post #3 of 14 (permalink) Old 04-30-2011, 12:22 AM Thread Starter
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Thank you, Symply!

There’s nothing as permanent as a temporary solution.

1995 Cadillac Fleetwood Brougham 108,XXX miles.
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post #4 of 14 (permalink) Old 04-30-2011, 02:41 PM Thread Starter
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Quote:
Originally Posted by Marky Dissod View Post
If it makes any difference …

As designed,
Coolant flows from top to bottom through the Gen2 engine and radiator.
Coolant flows from bottom to top through the heatercore.
Thank you. Mine is 1995 Fleetwood. It does not have a hose from the reservoir to the top of radiator outlet tank.

I have noticed traces of dirty liquid on the side of the coolant reservoir. The location looks like a projection of serpentine belt. I am a little bit concerned that the water pump started leaking and the belt sprayed some coolant at the reservoir. The pump was replaced by a dealer 20,000 miles/5 years ago... ACDelco part. Do they fail THAT often?

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1995 Cadillac Fleetwood Brougham 108,XXX miles.
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post #5 of 14 (permalink) Old 04-30-2011, 04:49 PM
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Thank you. Mine is 1995 Fleetwood. It does not have a hose from the reservoir to the top of radiator outlet tank.

I have noticed traces of dirty liquid on the side of the coolant reservoir. The location looks like a projection of serpentine belt. I am a little bit concerned that the water pump started leaking and the belt sprayed some coolant at the reservoir. The pump was replaced by a dealer 20,000 miles/5 years ago... ACDelco part. Do they fail THAT often?
That oil spray is likely being thrown up from the AC compressor.

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post #6 of 14 (permalink) Old 04-30-2011, 04:53 PM Thread Starter
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That oil spray is likely being thrown up from the AC compressor.
Thank you. Did not really think of the compressor. If it is indeed the compressor, is it on its way?

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post #7 of 14 (permalink) Old 05-01-2011, 08:58 PM
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You can reseal it. The front shaft seal is easy to do if the compressor is not rusted. Check if around the AC compressor clutch is wet.. Its sealed in the front so oil will spray out the sides (you will see a small air gap) My car has been wet in a similar area forever.. I replaced hoses, a PS pump (shaft seal was leaking) PS feed hose( was leaking) Now. I have alot less of a leak but something still makes slime. I'm about to just get rid of this car. (especially if I find that the compressor is leaking) My leak is usally only tossed up to the lower heater core hose off the water pump, idler arm and transmission lines.... But mine reeks like coolant.

With an compressor leak usually they will ONLY leak when the compressor clutch is activated (AC on or Defroster) and the compressor is spinning

Last edited by ghetto wagon; 05-01-2011 at 09:02 PM.
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post #8 of 14 (permalink) Old 05-01-2011, 09:03 PM Thread Starter
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Quote:
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You can reseal it. The front shaft seal is easy to do if the compressor is not rusted. Check if around the AC compressor clutch is wet.. Its sealed in the front so oil will spray out the sides (you will see a small air gap)
With an compressor leak usually they will ONLY leak when the compressor clutch is activated (AC on or Defroster) and the compressor is spinning
Thanks. I checked everything up today and could not find anything wet or dripping even with engine revved up... Hopefully, it was rain somehow getting into the engine bay and wetting the serpentine belt. I will keep an eye on it.

There’s nothing as permanent as a temporary solution.

1995 Cadillac Fleetwood Brougham 108,XXX miles.

Last edited by HUF; 05-01-2011 at 09:06 PM.
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post #9 of 14 (permalink) Old 05-01-2011, 09:08 PM
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You could have a small leak too that only leaks when the engine bay is REAL HOT and under pressure like I think mine is.. The heads can always leak too. I would clean it up, run it around w/o using the AC and see if the leak disappears If it does, Then run the AC and see if it comes back to rule that out.
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post #10 of 14 (permalink) Old 05-01-2011, 09:10 PM Thread Starter
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You could have a small leak too that only leaks when the engine bay is REAL HOT and under pressure like I think mine is.. The heads can always leak too.
That's a possibility as well. What really bothers me is that I felt that faint sweet smell in the cabin you cannot confuse with anything else - coolant smell... Could be heater core slowly failing. W&W - wait and watch, I guess.

There’s nothing as permanent as a temporary solution.

1995 Cadillac Fleetwood Brougham 108,XXX miles.

Last edited by HUF; 05-01-2011 at 09:25 PM.
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