93 ssei runs hot - 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 07-11-2004, 01:53 PM   #1
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Default 93 ssei runs hot

my temp gauge runs between 200 and 240 most of the time and i can't tell if my cooling fans are running. i never hear them turn on oh and usually my temp gauge jumps right up to 160-180 as soon as i turn on the car, what can i do to tell if my fans are turning on, i'm going to change out the tstat to 180 and the sending unit is there anything else?
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Old 07-11-2004, 02:01 PM   #2
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run a toggle switch with the fan
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Old 07-11-2004, 02:37 PM   #3
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how would i go about doing this, kinda new to bonnes
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Old 07-11-2004, 02:39 PM   #4
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Old 07-11-2004, 03:25 PM   #5
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http://www.bonnevilleclub.com/forum/...hlight=cooling
Pictures on page 2. And detailed instructions.

You may need to have your radiator flow checked, or perhaps have your cooling system reverse-flushed. Your water pump is getting weak if it'* the original as well. You probably have 3 or 4 minor problems all adding up to the results you see.
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Old 07-12-2004, 10:59 AM   #6
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Before you replace or add anything, first make sure the fans are working. Turn on the AC and then get out and look under the hood, both fans should be turning. The fans should also turn on when drving and the temp reaches a certain temp: I don't remember what the actual number is supposed to be, but on both my '92 and '93 the temp starts dropping after the fans turn on when the gage is just a tad to the right of the white line at the 1:00 position on the gage.

Will, with that many miles on his engine, how can he have an original water pump? I'd heard and read that the water pumps only last up to 75,000 miles or so on the supercharged '92/93?
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Old 07-12-2004, 11:14 AM   #7
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probably the same stock pump as mine, it lasted 170K. (yes it was def the original.)
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Old 07-12-2004, 01:56 PM   #8
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Default Re: 93 ssei runs hot

Quote:
Originally Posted by mekobes44
...oh and usually my temp gauge jumps right up to 160-180 as soon as i turn on the car...
Sounds like it may be your gauges, alternatively. It may read 200-240, but running 190-210. Do any of your other gauges go goofy like this?
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Old 07-12-2004, 09:48 PM   #9
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Its very possible that the problem is simply a sticky stat not opening all the way. I like the idea of a fan switch, but I wont do it because at some point I would forget to flip it and bust a motor.....
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Old 07-13-2004, 06:46 AM   #10
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I would start with a complete coolant system flush, new t-stat. Do the cooling fans operate in fast speed with A/C turned on? If yes, the fast speed relays & logic are functioning. If no, you may have to look deeper into cooling fan control relays. The PCM receives input from the engine coolant temperature (ECT) sensor and based on signal will operate fans in slow or fast as required. When A/C selected fans run in fast speed.
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