SAAB 9-5 Overheating Issue

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Jonathan Kaplan - 24 Mar 2006 01:59 GMT

I have a 2004 9-5 Linear Wagon. About two days ago I noticed that the
temperature gauge was reading almost to the red line. The next morning it
was doing the same thing. I drove it to the dealer (of course that morning I
was stuck in bumper-to-bumper traffic for 45 minutes) and left it there.

Three hours later, they tell me that there is nothing wrong with my car.
They said, "Why don't you bring it in when it's overheating so that we can
see it acting up!". These idiots grabbed my overheating car when it arrived
and parked it outside for two hours to cool down.

The only explanation they can offer is that there was a computer software
error. They said that there was no evidence of low water, overheating or any
problems. They said that the gauges are not directly connected to the
engine anymore, but are connected to the computer which is connected to many
engine sensors. They claim to have driven it four miles, measured the engine
temperature and found nothing wrong.

I've been driving the last few days and the car is behaving itself. The
gauge is now staying in the middle. Any ideas?

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Stanjo - 25 Mar 2006 05:56 GMT

Don't know about 9-5 Saabs, but this holds true for most cars:

- The eclectic fan either has two speeds or there are two fans - low and
high (most likely two speeds with a resistor for the low speed)
- The low speed kicks in now and then during normal driving; high speeds is
for serious overheating or when the AC is on.
- If something goes wrong with the low speed you may never notice it if the
car is constantly moving (air cools it), but if you're stuck in traffic it
will start to overheat. Once it gets almost to the red, the high speed will
kick in and bring the temperature down.
- In the summer, with the AC on, the high speed is on all the time, thus
hiding the porblem with the low speed fan.
- Best way to confirm that is to let the car idle for some time - 30 min. or
more. See if the temp raises and see if the low speed kicks in.

Good luck,
Stanjo

>I have a 2004 9-5 Linear Wagon. About two days ago I noticed that the
>temperature gauge was reading almost to the red line. The next morning it
[quoted text clipped - 15 lines]
> I've been driving the last few days and the car is behaving itself. The
> gauge is now staying in the middle. Any ideas?

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