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  #1  
Old 06-29-2005, 10:57 PM
iNeon's Avatar
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Location: Birmingham, AL
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cruise amp quick question

the cruise control box under the dash is being a butthead and i cannot under any ammount of pressure unscrew the two retaining screws(i dont even think i can get to the back one by all the wires)

tips would be greatly appreciated, i think i have the right box(?) because i unhooked it and now the car will not accelerate when i push/pull/click the stalk on the wheel. i have heard this is most likely my problem because the cruise will accelerate, but not hold speed.

how did you guys(gals) get yours out?

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  #2  
Old 06-29-2005, 11:33 PM
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Diesel Dean
 
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Location: Canterbury CT
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cruise amp

There is a bolt further up and back (10mm) that holds the bracket that the amp is screwed to. That may be easier to get off. There is another module attached to the bracket that will need to be disconnected prior to removal. not sure what that is for. Also it may be easier to remove it if you pull the instrument cluster (a bit more extreme though) depends on the level of pain you are willing to endure.
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  #3  
Old 06-30-2005, 01:59 PM
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Try a ratchet drive with the proper bit - if it's not too bunged up yet.
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1984 300Sd 210k

Former cars:
1984 300D 445k (!!) (Strider) Original (and not rebuilt) engine and transmission. Currently running on V80 ( 80% vegetable oil, 20% petroleum products). Actually not, taking a WVO break.
1993 300d 2.5 275k. Current 120/day commuter
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  #4  
Old 06-30-2005, 03:31 PM
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i pulled the unit after i read somewhere that there was a bolt instead of the screws, i still cannot get the screws off, but the amp is out of the car.

the problem i am having now is that the amp(from a 79 model car, original) seems to have brass solder or some type of yellow coating allover it and it just about refuses to melt!

hints?
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  #5  
Old 06-30-2005, 07:49 PM
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Quote:
Originally Posted by iNeon
i pulled the unit after i read somewhere that there was a bolt instead of the screws, i still cannot get the screws off, but the amp is out of the car.

the problem i am having now is that the amp(from a 79 model car, original) seems to have brass solder or some type of yellow coating allover it and it just about refuses to melt!

hints?
Your soldering iron should be able to penetrate the conformal coating used to protect the board.

Smells bad, but just solder right through it.

I have done gads of these boxes of all ages and this is what I do.
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1984 300D Turbo - 4-speed manual conversion, mid-level resto

1983 300D - parts car

1979 300TD Auto - Parts car.

1985 300D Auto - Wrecked/Parts.


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  #6  
Old 06-30-2005, 10:30 PM
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Quote:
Originally Posted by TomJ
Your soldering iron should be able to penetrate the conformal coating used to protect the board.

Smells bad, but just solder right through it.

I have done gads of these boxes of all ages and this is what I do.
An alternative is to spray some gumout carb cleaner on the conformal coating to dissolve it. Then use a tooth brush or brass wire brush (somewhat soft) and alternate using the cleaner and brushing off the coating. Then you will have a clean joint to re-solder
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  #7  
Old 07-03-2005, 06:18 PM
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i did this and resoldered all the joints, the cruise will accelerate the car sometimes, when it will not engage, i found that if i mash the accelerator pedal that the cruise will accelerate the car.

it still will not hold speed. should i see about getting one of these from a u-pull-it yard? how much will another broken one cost?

i drive the car an hour each way to class and it'd be very nice to have cruise control!
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  #8  
Old 07-04-2005, 01:43 AM
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Year, model of car?????

Folks, add this to your sig for when you ask for help. Many have said this. I agree.

Not to bust your ***** by the way, iNEON.
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'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
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  #9  
Old 07-04-2005, 02:09 AM
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its a 79 model 240D

its for sale now, if you care
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  #10  
Old 07-04-2005, 12:01 PM
Brandon314159
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Quote:
Originally Posted by iNeon
its a 79 model 240D

its for sale now, if you care
Cruise control on a 240D? Isn't that light putting your right foot on the floor when you leave the house and not letting up until you get to your destination?

Have you checked out your speed sensor?
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  #11  
Old 07-04-2005, 12:13 PM
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Cruise control on my 240D would be a brick on the accellerator pedal
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2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



TRUMP .......... WHITEHOUSE
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  #12  
Old 07-05-2005, 11:16 AM
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I S-canned all my original cruise crap when I did my WVO conversion this past weekend. Its kind of like cleaning out your glovebox of the useless crap that clutters it up that should have been thrown out.
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84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012
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  #13  
Old 07-05-2005, 11:51 AM
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Once I rebuilt my amp, the CC works flawlessly in the 240. Wouldn't have it any other way.

It helps that this car can peg the speedo on flat highway and will run 70-75 on hills.

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1984 300D Turbo - 4-speed manual conversion, mid-level resto

1983 300D - parts car

1979 300TD Auto - Parts car.

1985 300D Auto - Wrecked/Parts.


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"If you don't know where you are going, any road will get you there". Lewis Carrol
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