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#1
07-25-2006, 04:56 PM
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Non working Cruise Control
Hi again...
How can I test for either a bad CC amp or servo? I get no engaging at all. All fuses look good, and I cannot seem to find the CC amp. Where exactly is it? '82 300D Thanks!
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K 
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#2
07-25-2006, 05:20 PM
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Quote:
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http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42
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#3
07-25-2006, 06:04 PM
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I know that the servo is on the drivers side with the linkage. I thought the CC amp was some where inside the car. I'll check on the passenger side of the engine when I get home.
Thanks!
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K
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#4
07-25-2006, 06:18 PM
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The cruise amp or module is a ~4" x 6" box on the firewall in the cabin, in front of the brake pedal arm. Soldering the connections on the pcb can do wonders. Here is good reading and pics...
Yes, we have cruise..
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1983 300SD 307k miles 1993 Ford Escort Wagon 215k miles 1995 Isuzu P'up 214k miles
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#5
07-25-2006, 06:34 PM
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Lemme get the link to this site, it's easy to test the servo real quick to see if that's the issue. I am still unsure if a servo that has a working solenoid and the internal motor that spins could be at fault...
I believe it's usually the damned amplifier. 
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I'm not a doctor, but I'll have a look.  '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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#6
07-26-2006, 11:40 AM
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That link would be great! I also just discovered a so called "new" engine mount on the drivers side has torn rubber.
Thanks for all the help guys!
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K Last edited by rrgrassi; 07-26-2006 at 12:09 PM.
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#7
07-26-2006, 12:23 PM
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This is the best place to get started,, IMHO.
http://www.peachparts.com/shopforum/diesel-discussion/123036-cruise-control-repair-articles.html#post883130
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#8
07-26-2006, 12:30 PM
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Man, I copped out on the cruise control DIY repair. I pulled the amp from under the driver's side dash, unbolted the servo unit, boxed it up, sent it to General Devlopment Labs for testing and repair. It cost almost 300 bucks, but I now have a perfect cruise control unit, smooth as silk....with a warranty. I spent about 1/4 of my life running on cruise control, it was well worth it to me.
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Mark 1983 300TD Wagon Even a broken watch is right twice a day
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#9
07-26-2006, 01:21 PM
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I too recommend General Development Labs. I have 2 sets (CC module and actuator) back there now for testing and repair as necessary. I've tried resoldering the modules with no results. There are components that go bad in these things and I want results that I can trust, so thats my reasoning for using the "experts" there.
http://gdl-online.com/begin1.html
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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!
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Linear Mode
