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#1
09-02-2006, 07:49 PM
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Help!!!! the little things are going out.
Last week I went to get in my car and realized the power locks have gone out.(1993 300SE) Has anyone ever experienced or fixed this problem. It's not a fuse, checked everyone in the car. Also the handle that pops out of the trunk and the back-up assist antennas have quit working so I'm assuming these are all interconnected somehow. Are the locks on a W140 vacuum operated like the W126? Any help would be greatly appreciated. This car has so many electronics, i fear that once they begin to go out it's not long before it's dead.
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#2
09-02-2006, 08:25 PM
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Cliff, I am 98% sure the locks are vacuum, same for the trunk. All I can add is that my new to me 97S320 has had two incidences where there were problems with the trunk. Last repair was changing the trunk latch.
Steve TN
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#3
09-02-2006, 09:24 PM
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Guys' 110% sure the locks are vac. Pump for the lock (PSE pump) is under the rear seat on the right (pass) side. I am not sure as the system changed a bit through the production run, but pretty sure they used this same pump to run the handle in the trunk. Early production they used a pump in the trunk, this is the one that sucks the doors shut.
Gilly
__________________
Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)
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#4
09-03-2006, 02:55 PM
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I've doen some research and concluded that all the problems stem from the pump under the back seat. Luckily these go for a low price of around $700-1000. Anyone know about rebuilding one???
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#5
09-03-2006, 04:32 PM
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I hadn't even thought about the plumbing. How would one go about checking that out? Is there a way to test the lines?
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#6
09-03-2006, 05:23 PM
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Answer:
Quote:
Disconnect all vacuum lines from the pump, plug all save one, use a vacuum hand pump to apply vacuum. As you test each tube, mark it in some way. mityvac, MB diesel owners hero. http://www.peachparts.com/shopforum/showthread.php?t=102414 Door LOCK issues, link thread. http://www.peachparts.com/shopforum/showthread.php?p=1214456 Have a great day. 
__________________
ASE Master Mechanic https://whunter.carrd.co/ Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 2003 Volvo V70 https://www.boldegoist.com/
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