kopo

Hey guys. I’m having a problem with the blower motor running at a very slow speed even after the key is out. The only way to get it to stop is either disconnecting then reconnecting the battery or pulling the fuse. Almost like the blower resistor isn’t getting the signal from the ignition switch. It’s causing a real bad draw on the battery. Any suggestions are greatly appreciated. Thx Jason

Laker

Hi Jason,
It is normal for the blower to run up to 20 minutes after the car has been switched off, if the engine compartment is very hot.

Check out this photo and pull the NTC sensor connector off the blower tube (9 o'clock) on the photo.
If the fan stops, bad sensor I believe.

campoj2

Did you make that diagram? Holy ****!!

I'm putting that one in my stash of "dirty" pictures

Laker

yeah, right.... no I borrowed from HERE... A color copy is on my garage wall so I know where everything is suppose to go..back

kopo

Thank you. I will give it a try.

budge96

Both resistor and sensor are usually replaced with this malfunction(both fit in heat tube),cured the
same malady on my 993TT! ..Bert

J81 JKR

Laker, you say 'when the engine compartment is very hot' - my C2 Tip blower runs for a good 10-15 minutes every time ive been out in it, or even sometimes after the engine has been running while the car has been stationary. Is this normal?

Carrera51

Thanks for the photo! Saved to my desktop for quick reference

Laker

J81, It is my understanding that if the car had been running, and hadn't had a chance to cool down from airflow from the car moving, (and it's hot outside) the rear blower may fan kick in after the car has been shutdown. When you shut the car off, the heat doesn't immediately go anywhere, in fact it even can build a little since there is no forward motion airflow cooling it. The Blower fan may kick on after the key has been removed for up to 20 minutes IIRC. The important thing is that it eventually shuts off, which isn't happening for our friend Kopo.


Yes, could be both. pulling the NTC connector takes 3 seconds and costs nothing, try that first, and see. Then onto the resistor which just snaps into the same tube behind, left..... On the picture, where the arrow line from "Distributor Vent Tube" crosses the left edge of the tube. Make sure that 'coil' resistor part number ends in -02.... Not sure how many ohms to test for? or how else to test. I guess just pull one of the two leads off and see if that stops rear blower... anyone?

CBR786

Their is a recall on that resistor make sure your car had the later version. Can cause an engine fire if not been replaced with later thermal cutout version.

campoj2

Engine fires? Holy shiit!

Do you have a part number for the "good" thermal cutout switch?

Laker

good one ends in -02

campoj2

I may have had 6 too many drinks but what part am I looking at in the crazy *** diagram? Wait, I see it now, it's at the 9 o'clock position on the motor.

Laker

with your left hand reach behind the lower left of the tube and you will feel/see it. Two individual wires connected to it. Gotta unsnap it from the tube and pull it out to examine the part number...hopefully 964-616-550-02

Picture