My 1995 SSE is running a little warm... - 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 03-19-2007, 06:29 PM   #11
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dang. Its started to get hot again.

I noticed today, as I had it idling on the driveway (after another fruitless air bleed) that as the temp kept going up (close to 240 in one instance) my cooling fans NEVER ONCE CAME ON. Cearly, this can't be right...

I checked the wires to the fans, and the fuses, and the wire that goes to the coolant temp sensor (?) under the thermostat. All seemed okay. Is there something else I should be checking? perhaps my sensor itself is bad? The thermostat is definitely opening. The level in the overflow tank hasn't changed at all.

I think its time for a 180 degree thermostat, another good flush, and new hoses at least :\


EDIT: Forgot to mention, the fans DO work when the AC is turned on.
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Old 03-19-2007, 07:45 PM   #12
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Somethings not right; at 240 both fans should have been turned on i beleive.
Have you checked the relays?
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Old 03-19-2007, 11:57 PM   #13
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I don't even know where those relays are.
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Old 03-21-2007, 01:25 PM   #14
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zOMG NEW DEVELOPMENT!!!1

I got to school today and there was some steam wafting through the grille. Appeared to be going straight through the AC thing, but there was no steam on the other side of the radiator.

Probably got a slight radiator leak :\ Great. Add that to the shopping list I guess.
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Old 03-21-2007, 01:54 PM   #15
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Here'* a few links that may help:

http://www.bonnevilleclub.com/forum/...t=cooling+fans - same issue I had on my '93, just ran hot all the time, even in cool weather. having any wierd issues with your ECC at all?

Here'* another link with ECC/running hot issue:

http://www.bonnevilleclub.com/forum/...t=cooling+fans - again, have you noticed anything weird with your climate control?

May want to consider running manual switches to your radiator fans, here'* how:

http://www.bonnevilleclub.com/forum/...hlight=cooling - written up by willwren.
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Old 03-21-2007, 01:56 PM   #16
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An easy way to try and see where the leak is ...would be remove the 4 10mm bolts along the top of the radiator and 3 holding the tops of the fans on. Then remove the plastic rad support and look between the radiator and condensor.
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Old 03-21-2007, 02:11 PM   #17
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I haven't suffered any problems like described in wildman'* posts, thankfully.

The car seems to stay under 225 even when sitting in traffic, so I'm not paranoid about it overheating, but still, I find it strange. At 50mph, it seems to fluctuate between 200 and 220. My HVAC system works perfectly, and my cooling fans work when the AC is on.

I think I'm just going to drive around with jugs of water and coolant in my trunk till summer

When summer comes, I'll replace the radiator, the hoses, get a 180 deg. thermostat and drill it, flush the cooling system again, get some Water Wetter, and a new fan relay, cap and temp sensor. Might as well just overhaul the cooling system. So...uh...where can I find the cooling fan relay anyway?
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Old 03-21-2007, 02:43 PM   #18
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The fan relay in the maxifuse relay center (aka firewall)
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Old 06-21-2007, 08:30 PM   #19
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GM doesn't have these things labeled at all. Anyone know which relay runs the cooling fans on a '95 SSE? I've got the maxifuse center open, but I'm having trouble tracing the wires to the fans.

According to Standard Motor Products, there'* an auxillary fan relay and a regular fan relay. Is this true? Where is the second relay located then?
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Old 06-23-2007, 10:18 PM   #20
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when you did the LIM are you sure you plugged the coolant temp sensors back in?
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