85 300D won't turn off
12-31-2009, 08:14 PM
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'95 mercedes-benz 300d
85 300D won't turn off
Turns on fine, but won't turn off. Always having to use the "STOP" button on the engine. We assume it's a vaccum leak...we just can't figure out how to fix it. But again we are assuming. =( help?
12-31-2009, 10:53 PM
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1984 300D,82 Volvo Diesel
If you do not have a Vacuum Tester get a length of Vacuum Hose that fits the Vacuum Shutoff on the Fuel Injection Pump. Disconnect and plug the orgional hose and plug it; connect your length of Vacuum hose and suck on the end of the hose (not joking).
If you Engine shuts off there is a good chance that the Vacuum Shutoff is OK.
The next step I cannot be too helpful with. What people do is they disconnect the Vacuum Hose/s that go to the Door locks and the one that goes to the Climate Control System leaving only the Vacuum Shutoff circuit functioning.
Unforunately I do not know what colored hoses go where.
There is another Vacuum Shutoff Valve on top of the Steering Wheel Lock behind and to the Right of the Instrument Cluster and I think some of it can be seen from down below if the Kick Panel is removed. This is the Valve that moves when you turn the Key and gives the other Shutoff Valve on the Fuel Injection Pump Vacuum.
That Valve can go bad and leak as well as the Hoses that go to it.
A new Valve in that area is about $30
If you Engine shuts off there is a good chance that the Vacuum Shutoff is OK.
The next step I cannot be too helpful with. What people do is they disconnect the Vacuum Hose/s that go to the Door locks and the one that goes to the Climate Control System leaving only the Vacuum Shutoff circuit functioning.
Unforunately I do not know what colored hoses go where.
There is another Vacuum Shutoff Valve on top of the Steering Wheel Lock behind and to the Right of the Instrument Cluster and I think some of it can be seen from down below if the Kick Panel is removed. This is the Valve that moves when you turn the Key and gives the other Shutoff Valve on the Fuel Injection Pump Vacuum.
That Valve can go bad and leak as well as the Hoses that go to it.
A new Valve in that area is about $30
12-31-2009, 10:55 PM
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1984 300D,82 Volvo Diesel
Here are some links from the other forum I hang out at.
Repair Links
http://www.peachparts.com/shopforum/forumdisplay.php?f=82
http://www.peachparts.com/Wikka/DoItYourSelf
Repair Links
http://www.peachparts.com/shopforum/forumdisplay.php?f=82
http://www.peachparts.com/Wikka/DoItYourSelf
