The fresh air blower works fine on low and medium, but nt on high. Scrubbed contact through the ashtry opening; verified the wire is attached by removing the radio.
My mechanic thinks the high setting has a relay. What should I do ? I'm trying to restore this baby back to original working condition; these item are challenging.
Full Version: Fresh Air Blower
hmmm. that is not my car; try this...
Two things,
1st, does the control handle go all the way over to the right to actually make contact to fire up the "high" setting? Reason I ask is while I was adjusting my cable at the fresh air blower (not the wire, but the clamp down) it would sometimes only work on low and med, or only high and med. Sure is picky where you lock down the cable with the clamp.
2nd, and this is a pain in the ass...if you want to check your blower motor (I did this) you have to take it out (at least this is the only way I could get to it)...then you can jumper each terminal that supports low, med and high to see if you get those speeds.
If your blower motor is bad..I do have an extra very dirty but working blower motor (case is rough shape and all apart but the blower runs fine).
1st, does the control handle go all the way over to the right to actually make contact to fire up the "high" setting? Reason I ask is while I was adjusting my cable at the fresh air blower (not the wire, but the clamp down) it would sometimes only work on low and med, or only high and med. Sure is picky where you lock down the cable with the clamp.
2nd, and this is a pain in the ass...if you want to check your blower motor (I did this) you have to take it out (at least this is the only way I could get to it)...then you can jumper each terminal that supports low, med and high to see if you get those speeds.
If your blower motor is bad..I do have an extra very dirty but working blower motor (case is rough shape and all apart but the blower runs fine).
I cant answer your question, but I luv your car. 
that copper rocks
that copper rocks
oh..by the way...very nice looking 914!
QUOTE(jim912928 @ Oct 5 2004, 07:59 PM)
2nd, and this is a pain in the ass...if you want to check your blower motor (I did this) you have to take it out (at least this is the only way I could get to it)...then you can jumper each terminal that supports low, med and high to see if you get those speeds.
My guess would be this.
Na if the blower motor spins on low and medium then the motor is good.
Low and medium settings are the result of 12V DC being reduced through the two resistors inside the blower motor at the plug connection. to get high speed you need full 12V and this is through the same hot wire just different ground selected by the top lever on the dash. can't remember if it is white W/green stripe or White W/ yellow stripe or White W/ red stripe. But those three are the sudo ground wires. to the blower control.
Check your connection again. You can if you are careful push down on the high speed contact with power supplied. did I mention be careful?
use plastic or wood pusher.
Low and medium settings are the result of 12V DC being reduced through the two resistors inside the blower motor at the plug connection. to get high speed you need full 12V and this is through the same hot wire just different ground selected by the top lever on the dash. can't remember if it is white W/green stripe or White W/ yellow stripe or White W/ red stripe. But those three are the sudo ground wires. to the blower control.
Check your connection again. You can if you are careful push down on the high speed contact with power supplied. did I mention be careful?
use plastic or wood pusher.
Tried pushing down, no go; can I ground the high speed wire to the frame for testing ?
When I tested my motor...i simply put 12v to the lead of the motor and grounded each of the respective low, med high terminals. Can't see why you couldn't do that at the control instead. That should tell you if it is the contact area on the control or not. If that still doesn't work, not sure if you can get back there with the tank on, but do the test at the motor itself. If it works there, doesn't work by grounding the "hi" contact..then it just might be the wire in between.
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