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  #1  
Old 06-01-2002, 09:06 AM
Kyle Blackmore's Avatar
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Location: almost beyond Hope...B.C.
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Question Strange ACC problem

My 80 300D has been driving me crazy this week.Wednesday after work my ACC decided not to work at all,no blower and the push buttons seemed dead.Vaccum leak I thought, so I hooked up my mity-vac and found leaks all over the place.I replaced a bunch of rubber hose ends and still nothing.Checked the fuse,its OK,swapped fuses,still nothing.Friday going to work it starts working,coming home it won't.The service CD has a test procedure but it assumes that you still have some function,it also assumes you have a 'test' amplifier.Anyone have any ideas on where to start looking.

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1985 380SE- 160,000km 'Blistu' - Sold
1988 300CE- Eva,my garage mistress
2007 R350 4matic- The Black Pearl
2011 Ford Ranger-Work truck
1974 25' Trojan Sea Raider- 'Grannyknot'
2002 215 cm Atomic DH skis- Canadian SDH record holder, 175.5km/h- Vars 2010
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  #2  
Old 06-01-2002, 11:00 AM
engatwork's Avatar
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Time for some troubleshooting Kyle. You will need to do a search for similar problems and then try to get a schematic where you can check everything out. Oh yea, first you may want to clean/change the fuse. These fuses, especially if they are 15+ years old, can act up and still look good.
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Old 06-01-2002, 12:57 PM
MVK MVK is offline
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Agree with Jim about the fuse. I have heard from many people that the fuse looks good but sometimes has micro faults in them making them to behave abruptly.
Clean both end contacts with an erasure where the fuse fits. Also replace the fuse with a new one .
While at it check all the electrical plugs and connections asp those related to ACC.
My feeling is its loose contact( that also includes corroded fuse contacts and broken fuses). If not it could be the ACC unit itself. I hope its the first one. Good luck.
MVK
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1985 300D Turbo 179,000miles

Last edited by MVK; 06-01-2002 at 01:16 PM.
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  #4  
Old 06-01-2002, 03:16 PM
Kyle Blackmore's Avatar
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Join Date: Sep 2001
Location: almost beyond Hope...B.C.
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Thanks guys,I'll get a bunch of new fuses,probably cheaper at the dealer,and look thoroughly at the electrical.It was working again this morning on my way to work and then not on the way home It also sounded kind of 'sick' this morning which sounds like a voltage problem.An aftermarket amp is almost $300 It's too nice right now to stuff my body under the dash so I'll look at it tomorrow,thanks again
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1985 380SE- 160,000km 'Blistu' - Sold
1988 300CE- Eva,my garage mistress
2007 R350 4matic- The Black Pearl
2011 Ford Ranger-Work truck
1974 25' Trojan Sea Raider- 'Grannyknot'
2002 215 cm Atomic DH skis- Canadian SDH record holder, 175.5km/h- Vars 2010
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  #5  
Old 06-01-2002, 10:33 PM
MVK MVK is offline
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Also check out one more thing.
The carbon brishes on some of the blower motors wear out over a period of time. I came across a thread on this issue after i posted my earlier comments. Please search the forum with these words, blower motor carbon brush and you would come across this thread. he too had similar symptoms like yours.
When your blower motor is not blowing anything, open the glove compt, and remove the line, now you can see the ( this is the way its in my car) blower motor, tap on it ( might need a hard and multiple taps) and see if starts to blow air. Then its for sure your motor brushes.

MVK
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  #6  
Old 06-04-2002, 10:27 PM
Kyle Blackmore's Avatar
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Join Date: Sep 2001
Location: almost beyond Hope...B.C.
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Talking 40 cent fix

I went to the dealer and picked up new fuses(cleaned out his stock). When I pulled the blower motor fuse that I had switched with another old one, it came apart in three pieces... so thaaat was my problem I did replace a few rubber vacuum hose connectors and my push button controls feel much better now. Thanks for pointing me in the right direction guys....much appreciated Always remember the K.I.S.S. principle
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1985 380SE- 160,000km 'Blistu' - Sold
1988 300CE- Eva,my garage mistress
2007 R350 4matic- The Black Pearl
2011 Ford Ranger-Work truck
1974 25' Trojan Sea Raider- 'Grannyknot'
2002 215 cm Atomic DH skis- Canadian SDH record holder, 175.5km/h- Vars 2010
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  #7  
Old 06-05-2002, 12:43 AM
MVK MVK is offline
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hi Kyle Blackmore
I am glad you found the problem. Cool.
And we are happy that we could be of help.

Thanks

MVK

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1985 300D Turbo 179,000miles
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