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  #16  
Old 11-10-2006, 02:26 PM
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ya so i took the fuse #5 out and wow all my power is back. YAY!!!! now i need to figure out what part of the AC, Heater was causing the problem.

but i was not planning on having them work anyway, so no real loss as of right now.

thanks for all your help guys.

Dan

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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
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  #17  
Old 11-10-2006, 11:06 PM
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i had earlier said that it was fixed, but only for a little while. now it drives the same and i can still use the AC knob to boost power. what in the heck is going on?
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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #18  
Old 11-11-2006, 05:52 PM
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i am at a total loss. i have disconnected the AC line going into the firewall and the doors. so now there is nothing vacuum related connected that could affect engine power.

my 240d is a dog. it feels like i am towing another car it is soo slow. it has to be vacuum related, but i cant seem to figure out how. can someone help me find vacuum schematics so i can see what that AC knob does. i took the top cover off that has the antenna switches, rear interior lights, and sunroof buttons, and looked at the AC knob. it has like 4 of 5 vacuum lines going in. i know that what i move it away from the off position that turn the blower on and makes air come out of the vents. how can this affect my engine power?

if anyone has any more suggestions i am open to them.
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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #19  
Old 11-11-2006, 06:03 PM
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Can you post a couple of pictures of your engine? I cant imagine anything vac related causing a power loss on a naturally aspirated diesel. Maybe a look under the hood will help.
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  #20  
Old 11-11-2006, 07:19 PM
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ok here are some pictures of my car. as you can see the AC knob as very many Vacuum lines going and coming from it. when i turned the AC on i could hear a flap moving and air would then come out of the vents. somehow this action gives me lots of lost power back.






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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #21  
Old 11-11-2006, 07:28 PM
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more of the pics. you can see that i have disconnected the vacuum lines temporarly for the doors, cruise and AC system.



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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #22  
Old 11-11-2006, 08:23 PM
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so i reconnected the vacuum lines under the hood that go to the AC knob. All Power is back now. i am just clueless as to how the AC knob controls my engine power. in adition the car wont turn off agian. which means the AC system has a leak.
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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #23  
Old 11-13-2006, 04:24 AM
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Supply vacuum only to the shutoff switch, do not supply vacuum to the ac and doors. If you lose power, then its the shutoff switch. Its probably leaking and trying to shutoff the engine.
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  #24  
Old 11-13-2006, 05:52 AM
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That can on the top of the injector pump is not supposed to have a vac line going to it. Disconnect and plug that vac hose and I bet your problem will be gone. I'm guessing that when you turn on the a/c a vac is supplied to that can. That will reduce total fuel output from the injector pump killing power output.
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  #25  
Old 11-14-2006, 08:10 PM
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i will try that right away, omegaman. that makes sense to me now, because a guy in my appartment complex just bought a 240D and i saw that his was not connected. i was thinking his was messed up, but i guess mine is. i will post in just a second, need to do a test drive...
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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #26  
Old 11-14-2006, 08:34 PM
arcticathlon's Avatar
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Location: Richmond, Tx
Posts: 1,129
YOU ROCK, OMEGAMAN!!!! well that did it. i have full power all the time, the car shuts off, and i have a minor door leak that i will fix later, but the doors work. thanks again, i owe you one.

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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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