1983 300TD Wagon Vacuum Issue
1983 300TD wagon Vacuum Issue: on my 300TD wagon the vacuum leaks down (15 minutes) after shutting down the engine. Upon starting the engine it takes about 1 minute for all the door locks (including the rear hatch) to open. The engine shuts off properly and no problem with the power brakes. The other issue is that I need to let the engine run for about 1 minute before the center AC pod will work allowing cold air to come through the the middle vents.
Is this a vacuum reservoir issue or ? Thanks. |
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I had a similar issue. Usually it would lose vacuum with a lot of stop-and-go traffic, but the last couple of days it would lock the doors but not unlock, even if it was just a few minutes.
I poked around the vacuum connectors and found the one that had three branches right before the firewall was so loose a couple of the lines just fell out. The worst was the one with a fat yellow plastic thing. I'm surprised it held any vacuum at all. Anyway, I would check all your rubber connectors and look for anything visibly cracked, broken, or loose. Easy and cheap stuff first on these cars. -Rog |
Have you checked the driver's door lock 3 way vacuum valve? Isolate it by plugging the vac supply line going to it and if the leak goes away, it is likely the culprit.
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I just checked all the vacuum lines/fittings under the hood and did not find any problems. I will check the 3 way valve in the driver's door and report back. Any other suggestions are welcome. Thanks.
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With the supply line to the 3 way valve plugged should I notice an improvement in my AC middle ducts knowing that my door locks will not work with the supply line disconnected and plugged? Thanks.
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As for air that enters the front centre vents This is the same temp all the time never hot its to keep the driver awake . So it said in the book
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