2002 SL2 Idles Hot

On Thu, 20 May 2004 00:15:39 GMT, Blah blah > wrote:

>In article >,
says...
>> I just bought a 2002 SL2 and love it but for one thing; I noticed that
>> when stopped at a red light or in traffic the temperature gauge goes
>> from slightly over 1/4 to past 1/2. Once the car gets moving again,
>> the temperature goes back to normal. (I've never just let it sit for
>> ten minutes or so to see if the temperature will keep climbing.)
>>
>> According to the Saturn dealership I called, this is normal, but I
>> wanted to check to see if anyone else had noticed this.
>>
>> Joseph
>>
>This just came to me... Not sure if this applies to your year or make
>and I never looked this up but when looking at a fuse box under the hood
>of a saturn I recalled seeing 2 fan relays. One said high, the other
>said low. Maybe the high speed fan relay is bad. Again, I do not have a
>wiring diagram on hand but this is something to look into. Anyone out
>there with a book or GM SI disk or something able to referance a 02 SL2?


i had a similar issue with my '97 sl2. the fan motor was bad. on the
97, the A/C relay and the fan relay were the same part number, so i
switched them out in order to narrow things down.

nanook

>I'll repeat myself for the hard of hearing: Turning on the A/C creates
>additional heat from A) running the engine harder and B) the heat
>exchange process of the compressor. The cooling fan will come on when
>the PCM finds it is nessecary.


The sounds good. But, what is logical is often wrong. The key is to keep the
engine temperature down and those two basic ways (leaving air conditioner on so
the fan runs and add an oil additive ... specifically Duralube or probably STP)
will keep the tempurate less than the temperature the PCM decides is about to
ruin the engine.

(ProfWdesk1) typed until their fingers bled, and came
up with:

The key is to
> keep the engine temperature down and those two basic ways (leaving air
> conditioner on so the fan runs


Actually, just turning the A/C on, and then off again after a few seconds
will cause the cooling fan to run for 2 minutes.


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