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question about motors
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#1
01-09-2013, 09:31 AM
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question about motors
I purchased a used motor/window regulator for my E30. Works fine on descent and fine about 3/4 of the way up. Then it begins to slow down and stops about 2 inches from the window closing.
when i test it out of the car, it opens all the way, then closes all the way. Is this a sign the motor is possibly going bad, or is it likely the cabling is messed up? any thoughts appreciated before i go return this and seek another...
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Tito 82 911 SC with 3.2 73 RSR project 97 328is 99 328is 97 Lexus SC300 Manual 86 TL (gone) 993 (gone) 75 911S (gone) 
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#2
01-09-2013, 09:36 AM
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Sounds like there is some friction in the regulator. Without the motor, can you move it freely through its whole range of motion?
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Bob 04 GT3 86 Carrera 97 318ti "Guys, I'm coming in, I have too much grip."
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#3
01-09-2013, 09:44 AM
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There's dirt and crap built up in the window channels. Probably what killed your last motor. Check/clean the window channels. Once you get them clean, hit them liberally with silicon spray.
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Tony K PCA Potomac, Rennlist Member 89 944 Turbo 85 Carrera - Sold TrackVision 944Cup
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#4
01-09-2013, 09:47 AM
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Tito - if it turns out to be the motor, I've got a spare from an E36. Not sure if they're compatible.
Also, as Tony stated - clean out the channels, and check the plastic guides as well.
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Rob T. 2006 Carrera S 2013 Cayenne GTS
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#5
01-09-2013, 09:51 AM
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The assembly does not allow the cabling to move without the motor (as far as i can tell). butchered another regulator assembly trying to see if i could repair it.
didnt even think about the window channels...will clean up and see if that is the cause... as i said the thing works fine when disconnected from the window (or outside the car)...i just figured it was the load of the window causing the problem...thanks...try later and hopefully resolve the issue.
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Tito 82 911 SC with 3.2 73 RSR project 97 328is 99 328is 97 Lexus SC300 Manual 86 TL (gone) 993 (gone) 75 911S (gone)
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#6
01-09-2013, 05:40 PM
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Had the same issue on the daughter's VW. Ended up being a frayed cable in the regulator. It would work fine with no load but with the weight/friction of the window plus the frayed cable there was enough total friction to cause the window to stop about 3/4 of the way up....sometimes making it return to the down position. Had to replace the regulator.
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Steve Potomac PCA Co-CI(retired) 89 944 Turbo Race car 85.5 944 NA son's 2015/2019/2020 944Cup and PCA Nat'l Champ racecar 94 968 1 of 11 Iris blue coupes 92 968 1 of 2 Tahoe Blue Cabriolets 98 993 C2S w/Aerokit II 77 911S Vintage race car project 70 Boss 302 86 Mustang SVO 24 F250 SD Godzilla "Noel spun! Noel spun! Don't do anything stupid, Dad." -the boy on the radio on the last lap of NASA race as the second place car spins behind me in T5 at Summit Point.
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#7
01-10-2013, 09:10 AM
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cleaned it up...checked the cabling and it appears ok end to end...and it is working fine...thanks to all for the help.
Follow on question: anyone know of a suitable replacement for the plastic moisture barrier which is locally available?
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Tito 82 911 SC with 3.2 73 RSR project 97 328is 99 328is 97 Lexus SC300 Manual 86 TL (gone) 993 (gone) 75 911S (gone)
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#9
01-10-2013, 10:40 AM
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ok...so doesnt really have to be anything special...thanks...
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Tito 82 911 SC with 3.2 73 RSR project 97 328is 99 328is 97 Lexus SC300 Manual 86 TL (gone) 993 (gone) 75 911S (gone)
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