924Board.org

[leeh]

Hello Again,

Another problem i,m having is with the fan. when i select 1 - 3 on the fan speed theres nothing,yet when switched to 4 the fan blasts out,again all the relays & fuses have been checked and thier fine ! Have to drive around with the window ipen all the time or the windows steam up ! Any thoughts ??

Regards from the UK
Lee H.

[Eturbo924]

Most certainly sounds like the relay to me.
But if not try swapping out the switch.
I assume you have a 1982.5-1985 924 or a 924S?
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1982 924
1992 968
2003 C4S
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[leeh]

Many thanks Eric,

Yes. I,m in the UK and i have a 1983 924. I only purchased the car recently so this is all new to me,i'll recheck all the fuses and relays and check the grounding.

Never used this site before,cant belive the speed of response.keep up the good work !!!!

Regards from the UK .

[Roger]

I have not been around for awhile so I am not up to speed on your car, but here is a thought. Most cars have a resistor pack that controls the blower moter speed. Its usually just a series of coiled wires each with a different diameter. There may also be a diode depending how the coiled wires are set up. Full speed on the blower motor bypasses these resistors and the diode since full power is needed for the high setting. Try locating the resistor pack and see if the wires are melted or the diode is blown. My 81 924 doesn't have a diode and the resistor pack is located in the dash board attached to the fan speed switch. On other cars it is sometimes located close to the blower. The blower helps cool the resistor pack since they can get very hot. Usually the relay only supplies power it does not regulate fan speed.
_________________
1981 924 NA

Some people are like Slinkies. Not really good for anything, but you
still can't help but smile when you see one tumble down the stairs.

[kye]

maybe the fans bearings aren't smooth and it takes full whack to get it to start turning at all? mine was pretty gunked up (so it wouldn't even move at all) and i've heard it's a common problem.
if the fan will run at slower speeds by giving it full power and then backing it off slowly then that's probably it.
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it's funny, but when they said "Anything is Possible", that's exactly what they meant....

[John Brown]

Roger is correct. Look directly behind the controls for the resister-pack regardless of which control variation you have (There are 2 styles off the top of my head - but each is in the same locatio)
_________________
John
80 931 - #931 44Cup
99 Escalade - tows track cars
gone but not forgotten: original 924.org car - 82

[Eturbo924]

I had a similar set up on my 1989 Ford probe but did not know it was like that on the 924. I do not recall seeing one on my 1983 944... but then again... was never looking for it either
_________________
1982 924
1992 968
2003 C4S
Parts Parts Parts and More parts.
E-mail me for parts you need!
Drive Fast!

[Dez]

I appear to be having the same problem. only the last selector on the blower switch works.
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1982 Porsche nine two four with Carrera GT conversion - people think i'm slow cos it's an X plate!!
http://www.p-caronline.com/directory/dez

[John Brown]

The 83 944 and VERY late 924s had a rotary switch which seleced fan speed. But it provided the same function as the earlier slide switch; it selected sections of heavy resistor wire. And the resistor is still in roughly the same location behind that panel.
_________________
John
80 931 - #931 44Cup
99 Escalade - tows track cars
gone but not forgotten: original 924.org car - 82

[Vince Ponz]

Mine runs all the time. Hit a bump and it may go off or speed up. I think it is haunted.
Same with my wipers.
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

[Roger]