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#16
02-21-2005, 09:28 PM
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So you're saying that the electrical portion of the key switch is what's causing my blower problem? The key isn't returning to the proper spot, so does the electrical portion of it have something mechanical to it to force the key back after it's released from the start position?
To fix this issue, would I have to remove just the cylinder? I think the cylinder is the only thing that can be removed without major surgery. Thanks David
__________________
_____________________________________________ 2000 Honda Accord V6 137k miles 1972 300SEL 4.5 98k miles _____________________________________________ 
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#17
02-22-2005, 07:20 AM
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A mistake.
Quote:
My apologies if this caused anyone some head scratching. It may also be different on other cars.
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#18
02-22-2005, 10:51 AM
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I think the vacuum should be released when the key is switched on. So maybe it is a key switch problem? Do you guys know which part of the switch would be the problem? The cylinder, tumbler, electrical part? I know how to remove the cylinder, which may also be called the tumbler? How are the other parts gotten out?
Thanks David
__________________
_____________________________________________ 2000 Honda Accord V6 137k miles 1972 300SEL 4.5 98k miles _____________________________________________
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#19
02-22-2005, 05:13 PM
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The vacuum valve
I believe is just screwed on to the back of the key switch. Good news is it should be easy to replace if needed. Bad news is I think you have to either go under the dash (can you say contortion) or through the instrument panel to get to it.
Might just be a plugged port but more likely it is that the key switch is not turning to the correct location to bleed vacuum. Of course you could be really lucky and it is just that the screws holding it are loose and will fix it if you tighten them back up... I like to be a positive thinker...  I have personally never been to that depth in the SD only on the old 80 300D and it was real easy to reach the switch from under the dash.
__________________
'99 S420 - Mommies '72 280SE 4.5 - looking to breathe life into it '84 300SD Grey - Sold '85 300SD Silver - Sold '78 Ski Nautique
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#20
02-22-2005, 06:23 PM
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I had helped a friend do one on a 300SDL and it was a pain in the ass.
Try and locate the other brown line that passes through the firewall that feeds the ignition switch and try testing that with the key in various positions before you pull the steering lock out.
__________________
 1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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#21
02-22-2005, 09:51 PM
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Thank you both very much. I'll try this tomorrow and get back with you guys.
Thanks David
__________________
_____________________________________________ 2000 Honda Accord V6 137k miles 1972 300SEL 4.5 98k miles _____________________________________________
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