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#1
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190D 1989 2.5 can't find vacuum door pump
Hello, my w201 suddenly stoped locking doors, at first the rear drivers door started locking strange, some times it locked some not, then all the locking system is down, nothing happens
I've searched on manuals and all over internet and there is supposed to be a vacuum pump below the rear seat, so I went there, BUT THERE IS NO PUMP, there is nothing, no cables, no vacuum lines, no pump, nothing. Maybe I'm searching for something that does not exists in my model, any ideas? Thank you. |
#2
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There should be a foam rubber box under the right rear passenger seat. Open the box, the pump will be inside.
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#3
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Quote:
You are 100% sure that this mercedes model have this pump here and there is no other place to search for it? Thank you. |
#4
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Here are the pics...
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#5
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I know my 1991 W124 has a pump in that location. But I also seem to recall that, prior to a certain year, there was no pump....the door locking just operated on the residual vacuum of the system.
Can you provide the VIN? Perhaps we can look in EPC.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#6
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Quote:
The VIN is WDB2011261A487758 |
#7
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According to EPC, it should be just where Mxfrank said it should be. Part number is 124 800 21 48.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#8
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Ok great that's something good to know, but do you see the foam box in the pictures I've posted? I also tried to hit the bottom searching for some foam sound or cables, maybe vacuum lines, but it sounds metal... Do you think I'm not seeing it? I feel dumb
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#9
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Compare this image taken from https://www.pelicanparts.com/techarticles/Mercedes-190E/49-BODY-Replacing_Your_Vacuum_Supply_Pump/49-BODY-Replacing_Your_Vacuum_Supply_Pump.htm with mines:
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#10
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It looks like it simply isn't there...weird.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#11
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That's what I thought... REALLY WEIRD, I have searched all over without any luck... Maybe is somewhere else?
If this adds some information my central lock only locks the 4 doors, no trunk or fuel function.. Just locks all doors with the front keys or form inside with the drivers door... How can I diagnose this? do you think I need to disassembly my doors and start following the vacuum lines? |
#12
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Quote:
__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#13
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I would seem that someone has done some shade tree mods to "improve" and "simplify" your car. They may be running the door locks off the reservac, or maybe they've installed another pump somewhere. Unfortunately, you're on your own with this one. You'll have to follow the vacuum lines and see where they lead.
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#14
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Huh.
This car has not central locking system from factory. |
#15
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There is an aftermarket central locking system. I believe that it it electrical. So you need to check working elements in each doors, but firstly in driver's one.
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