Where the heck is
10-29-2010, 12:49 AM
#1
Racer
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Where the heck is
the resistor for the blower to control the speed?
I have replaced the head unit and the blower works on DEF ONLY since that is a bypass of the resistor. I looked in the Printed and the CD manual and no where can I find out where it is or WHAT it looks like.
I ASSUME it is under the cover where the blower is mounted but you know ASSUME.
This is the 1984
Thank you
I have replaced the head unit and the blower works on DEF ONLY since that is a bypass of the resistor. I looked in the Printed and the CD manual and no where can I find out where it is or WHAT it looks like.
I ASSUME it is under the cover where the blower is mounted but you know ASSUME.
This is the 1984
Thank you
10-29-2010, 01:17 AM
#2
Rennlist Member
George, its called a resistor group or something similar.
Lift your hood, lift the light plastic cover that spans the space between the hood hinges.
Its located inside the black air plenum.
Search here for tips to remove and replace.
That said.....
More likely, the relay is bad.
You see, there are two separate relays, one for defrost & another for normal operation.
Lift your hood, lift the light plastic cover that spans the space between the hood hinges.
Its located inside the black air plenum.
Search here for tips to remove and replace.
That said.....
More likely, the relay is bad.
You see, there are two separate relays, one for defrost & another for normal operation.
10-29-2010, 01:25 AM
#3
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George, its called a resistor group or something similar.
Lift your hood, lift the light plastic cover that spans the space between the hood hinges.
Its located inside the black air plenum.
Search here for tips to remove and replace.
That said.....
More likely, the relay is bad.
You see, there are two separate relays, one for defrost & another for normal operation.
Lift your hood, lift the light plastic cover that spans the space between the hood hinges.
Its located inside the black air plenum.
Search here for tips to remove and replace.
That said.....
More likely, the relay is bad.
You see, there are two separate relays, one for defrost & another for normal operation.
Will fill you in on what happens.
10-29-2010, 01:30 AM
#4
Drifting
Look on page 87-98 in manual #4 of the PDF manual here
http://www.cannell.co.uk/Manuals.htm
btw download all 5
http://www.cannell.co.uk/Manuals.htm
btw download all 5
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10-29-2010, 09:24 AM
#8
Drifting
That is the only thing that I can see that it could be.
I need to do mine and that it what I was going to go for.
I will check with Roger first and order one so that I know what it looks like.
I need to do mine and that it what I was going to go for.
I will check with Roger first and order one so that I know what it looks like.
10-29-2010, 01:54 PM
#9
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If the blower will run on top speed, but not on lower speeds, the resistor pack is the most likely problem.
If the blower won't run on top speed, the resistor pack is not likely to be the problem.
If the blower won't run on top speed, the resistor pack is not likely to be the problem.
10-29-2010, 02:26 PM
#10
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My blower works on defrost only too. If I turn on the fan switch to any position other than off, smoke will pour from the head unit.... is that bad? 
Don't mean to hijack the thread, but your problem is similar..
I plan on pulling the whole center console to replace vacuum diaphrams and solve this problem too. Anybody else had an issue like this? The only post I have found that might explain it is if the clip that holds the wiper arm in the head unit comes off and causes contact between two areas that should never receive contact. No fuse blown yet, but I've never left the switch on but a couple of seconds either... Could this even remotely be a relay issue?
Don't mean to hijack the thread, but your problem is similar..
I plan on pulling the whole center console to replace vacuum diaphrams and solve this problem too. Anybody else had an issue like this? The only post I have found that might explain it is if the clip that holds the wiper arm in the head unit comes off and causes contact between two areas that should never receive contact. No fuse blown yet, but I've never left the switch on but a couple of seconds either... Could this even remotely be a relay issue?
10-29-2010, 03:19 PM
#11
Drifting
[QUOTE=86'928S MeteorGrey;8013654]My blower works on defrost only too. If I turn on the fan switch to any position other than off, smoke will pour from the head unit.... is that bad?
Don't mean to hijack the thread, but your problem is similar..QUOTE]
This is not good.
You may have a fried head or wires back there so you will need to pull it and take a look.
Look on page 87-98 in manual #4 of the PDF manual here for more info
http://www.cannell.co.uk/Manuals.htm
Don't mean to hijack the thread, but your problem is similar..QUOTE]
This is not good.
You may have a fried head or wires back there so you will need to pull it and take a look.
Look on page 87-98 in manual #4 of the PDF manual here for more info
http://www.cannell.co.uk/Manuals.htm
10-29-2010, 03:57 PM
#12
Rennlist Member
What does it smell like?
We had one that had leaves in the plenum that the resistor was toasting.
I've replaced a couple. This is the best thread with (all the heavy-hitters weighing in) that covers this resistor: https://rennlist.com/forums/928-foru...operative.html
BTW, check your relays and fuse first. Don't assume its the resistor unless you either have magic blower syndrome or else your blower only works on high (when in regular mode, NOT defroster mode).
Fuse 17 is shared by both modes.
The relays for USA 84 are shown in this picture:
We had one that had leaves in the plenum that the resistor was toasting.
I've replaced a couple. This is the best thread with (all the heavy-hitters weighing in) that covers this resistor: https://rennlist.com/forums/928-foru...operative.html
BTW, check your relays and fuse first. Don't assume its the resistor unless you either have magic blower syndrome or else your blower only works on high (when in regular mode, NOT defroster mode).
Fuse 17 is shared by both modes.
The relays for USA 84 are shown in this picture:
Last edited by Landseer; 10-29-2010 at 04:23 PM.
10-29-2010, 04:48 PM
#13
Electron Wrangler
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What Wally said...
The blower resistor pack is not suspect if you don't get operation in the highest fan speed mode.
The blower switch also bypasses the resistor pack in the fastest mode and drives the blower motor direct (all years).
In this case the switch connector, blower relay, fuse or intermediate connections are more suspect.... start with the switch connector.
Alan
The blower resistor pack is not suspect if you don't get operation in the highest fan speed mode.
The blower switch also bypasses the resistor pack in the fastest mode and drives the blower motor direct (all years).
In this case the switch connector, blower relay, fuse or intermediate connections are more suspect.... start with the switch connector.
Alan
10-29-2010, 08:15 PM
#15
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FIXED
Relay for the fresh air blower was fried. Thanks guys works great now!
Now I can work in the KNOWN things like the smell of a cooked catalytic converter and a bad air flow.
Thanks for the help.
Relay for the fresh air blower was fried. Thanks guys works great now!
Now I can work in the KNOWN things like the smell of a cooked catalytic converter and a bad air flow.
Thanks for the help.