1979-1993 & 94 Conv [Subscribe to Daily Digest] |
TC,
So your questions first:
- Is there a relay I should be looking at or something?
- No, unless both of your h/l wipers suddenly stopped working. All at once.
- Possibly a salted-up connector?
- Quite unlikely.
- Did my wiper motor seize up?
- Quite unlikely (if you really mean the motor, not the motor assembly which includes the motor itself, gears with circuit breaker, electronic self-recovering fuse)
I feel ya pain since I've been there (and later done that) - one of my h/l motors gone south right when I was trying to pass MOT inspection. And damn it, it was working fine two hours before when I did my ordinary 'pre-flight checks'.
My advice will be to order another one (for either part or as a spare part) and after you've got it picked up you could try opening your old one. Hints: be careful with those plastic clips on the backplate - you can try placing the h/l motor assembly into a boiling water for 2-3 minutes to soften them a bit. Once you're in, note the relative position for the primary gear and rocker or it'll stop somewhere in the middle and you'll have to give it several tries (putting those gear this way and another) before it finally agrees to stop at the end of its angle travel.
Electronic fuse is prone for failures (if you used to heavily load wipers e.g. with ice on the h/l lens or melted snow) but is a standard electronic part widely available, circuit breaker maintenance is straight-forward (if you ever fixed a switch or a button).
Motors are known to be quite reliable, though it's a good idea to clean the rotor/collector and go with new brushes.
My first motor assembly went south with the rocker gear which lost a tooth or two. The second one failed cause of... I don't remember it well, something related to internal electrics (diode? electronic fuse? eh...) and I wasn't able to fix that because of some compound... Forget it, I just do not remember that, sorry.
Quick troubleshooting guide (according to common sense and failure rate):
- if the motor assembly doesn't not move at all AND THERE'S NO PLAY ON THE SHAFT, then it's either the electronic fuse or the motor
- if it stops right when you release the stalk (doesn't park in the parking position) then it's either the circuit breaker that's corroded or diode that is shot
- if there is a significant axial (left to right, right to left) play on the shaft then it's the gears
Electrics are quite simple: one wire is the constant ground, another one is +12V and the third one is 'drive' signal of 12V. The motor goes swinging right when and all the time there's 12V on the 'drive' wire. After it's powered off it should continue the swing and park at the parking zone (at the end of its angular travel).
Good luck,
Zig
posted by 188.134.44...
, Wed, 15 Feb 2012 12:39:16
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
