STD Maintenance General Cruise Control

Cruise Control

Cruise Control

 
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sassparilla_kid
diesel > all other fuels

1,618
01-24-2012, 01:04 AM #1
Okay, I would very much like to get the cruise control function to work again, and the extent of my knowledge of cruise control is that there is an amplifier involved haha, soo I guess my question is what can I do to get the CC back working again!? Also, the tachometer only works sporadically, so any help/suggestions there would be appreciated as well.

Thanks folks!!!

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
01-24-2012, 01:04 AM #1

Okay, I would very much like to get the cruise control function to work again, and the extent of my knowledge of cruise control is that there is an amplifier involved haha, soo I guess my question is what can I do to get the CC back working again!? Also, the tachometer only works sporadically, so any help/suggestions there would be appreciated as well.

Thanks folks!!!


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

aaa
GT2256V

913
01-24-2012, 03:50 PM #3
Usually comes down to replacing/repairing the amp. It develops hairline cracks in the solderjoints over time.

The tachometer has its own "amp". See here for a $50 one:
http://mbelectronicupgrades.com/Products.html
aaa
01-24-2012, 03:50 PM #3

Usually comes down to replacing/repairing the amp. It develops hairline cracks in the solderjoints over time.

The tachometer has its own "amp". See here for a $50 one:
http://mbelectronicupgrades.com/Products.html

sassparilla_kid
diesel > all other fuels

1,618
01-24-2012, 05:41 PM #4
Awesome, if I could get the tach to work I would be extremely happy, and if I can manage to get the cruise control working there's no telling what I'll do haha. I'll have to look into ordering one of these tach relays

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
01-24-2012, 05:41 PM #4

Awesome, if I could get the tach to work I would be extremely happy, and if I can manage to get the cruise control working there's no telling what I'll do haha. I'll have to look into ordering one of these tach relays


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

sassparilla_kid
diesel > all other fuels

1,618
01-26-2012, 06:15 PM #5
Is there any way to repair or check the stock amp? I pulled it out and it has a bunch of silicon or something so I cant really get to the electronics to test them without removing it

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
01-26-2012, 06:15 PM #5

Is there any way to repair or check the stock amp? I pulled it out and it has a bunch of silicon or something so I cant really get to the electronics to test them without removing it


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

aaa
GT2256V

913
01-26-2012, 07:01 PM #6
Pic? My guess would be to remove the silicone and take a heat gun to the solder.
aaa
01-26-2012, 07:01 PM #6

Pic? My guess would be to remove the silicone and take a heat gun to the solder.

sassparilla_kid
diesel > all other fuels

1,618
01-26-2012, 07:11 PM #7
Yeah I may try it out later after class with a multi tester and see if I can't find a dead resistor or something

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
01-26-2012, 07:11 PM #7

Yeah I may try it out later after class with a multi tester and see if I can't find a dead resistor or something


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

hannes_s
K26-2

25
01-27-2012, 05:25 AM #8
(01-26-2012, 07:11 PM)sassparilla_kid Yeah I may try it out later after class with a multi tester and see if I can't find a dead resistor or something

You problably will not find a dead resistor, if you want to repair the amp yourself than you have to do over all the tin solders-it takse about an hour to do this properly.

hannes_s
01-27-2012, 05:25 AM #8

(01-26-2012, 07:11 PM)sassparilla_kid Yeah I may try it out later after class with a multi tester and see if I can't find a dead resistor or something

You problably will not find a dead resistor, if you want to repair the amp yourself than you have to do over all the tin solders-it takse about an hour to do this properly.

sassparilla_kid
diesel > all other fuels

1,618
01-27-2012, 02:33 PM #9
(01-27-2012, 05:25 AM)hannes_s
(01-26-2012, 07:11 PM)sassparilla_kid Yeah I may try it out later after class with a multi tester and see if I can't find a dead resistor or something

You problably will not find a dead resistor, if you want to repair the amp yourself than you have to do over all the tin solders-it takse about an hour to do this properly.

Awesome I may end up trying this at some point then, I just have to find my soldering iron first! haha

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
01-27-2012, 02:33 PM #9

(01-27-2012, 05:25 AM)hannes_s
(01-26-2012, 07:11 PM)sassparilla_kid Yeah I may try it out later after class with a multi tester and see if I can't find a dead resistor or something

You problably will not find a dead resistor, if you want to repair the amp yourself than you have to do over all the tin solders-it takse about an hour to do this properly.

Awesome I may end up trying this at some point then, I just have to find my soldering iron first! haha


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

sassparilla_kid
diesel > all other fuels

1,618
01-30-2012, 03:41 AM #10
Tach amp ordered

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
01-30-2012, 03:41 AM #10

Tach amp ordered


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

hannes_s
K26-2

25
01-30-2012, 05:16 AM #11
If tach doesent work than there can be a problem with OVP relay, tach amp gets its power suply from OVP relay.
As you can see on diagram, K1/1 is OVR pelay and N8/1 is tach amp
http://img697.imageshack.us/img697/3941/p1030313.jpg

OVP relay comman problam is also bad tin solder or broken fuse on top of it.
http://www.upload.ee/image/341148/IMGP2657.JPG
hannes_s
01-30-2012, 05:16 AM #11

If tach doesent work than there can be a problem with OVP relay, tach amp gets its power suply from OVP relay.
As you can see on diagram, K1/1 is OVR pelay and N8/1 is tach amp
http://img697.imageshack.us/img697/3941/p1030313.jpg

OVP relay comman problam is also bad tin solder or broken fuse on top of it.
http://www.upload.ee/image/341148/IMGP2657.JPG

sassparilla_kid
diesel > all other fuels

1,618
01-30-2012, 01:35 PM #12
Awesome, if the new amp doesn't solve the problem I'll check the relay out

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
01-30-2012, 01:35 PM #12

Awesome, if the new amp doesn't solve the problem I'll check the relay out


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

aaa
GT2256V

913
01-30-2012, 03:38 PM #13
The OVP relay is a 1985 and later thing.
aaa
01-30-2012, 03:38 PM #13

The OVP relay is a 1985 and later thing.

hannes_s
K26-2

25
01-30-2012, 04:01 PM #14
(01-30-2012, 03:38 PM)aaa The OVP relay is a 1985 and later thing.

OK, I did not know that.
hannes_s
01-30-2012, 04:01 PM #14

(01-30-2012, 03:38 PM)aaa The OVP relay is a 1985 and later thing.

OK, I did not know that.

sassparilla_kid
diesel > all other fuels

1,618
01-31-2012, 01:23 AM #15
(01-30-2012, 03:38 PM)aaa The OVP relay is a 1985 and later thing.

I guess that means I dont have to worry about it!! I am also going to add an extra ground to the cluster soon because I suspect that may also be contributing to the problem

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
01-31-2012, 01:23 AM #15

(01-30-2012, 03:38 PM)aaa The OVP relay is a 1985 and later thing.

I guess that means I dont have to worry about it!! I am also going to add an extra ground to the cluster soon because I suspect that may also be contributing to the problem


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

sassparilla_kid
diesel > all other fuels

1,618
02-02-2012, 01:56 PM #16
Is there any place in particular on the back of the cluster that would be especially good for connecting an extra ground? I think it may help with my slightly jumpy temp and fuel gauges so I would like to try it out

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
02-02-2012, 01:56 PM #16

Is there any place in particular on the back of the cluster that would be especially good for connecting an extra ground? I think it may help with my slightly jumpy temp and fuel gauges so I would like to try it out


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

sassparilla_kid
diesel > all other fuels

1,618
02-02-2012, 06:33 PM #17
Okay so I just disassembled my odometer and re-set the mileage to about 270k from 226k, and hopefully scratching up the shaft and adding loctite to it prevents the little pot metal gear from slipping once I re-install. Im also gonna put in an extra ground when I reinstall the cluster as well, and then all I will need is for the new tach amp to come in the mail and I should have all functioning gauges! Or at least I can hope haha

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
02-02-2012, 06:33 PM #17

Okay so I just disassembled my odometer and re-set the mileage to about 270k from 226k, and hopefully scratching up the shaft and adding loctite to it prevents the little pot metal gear from slipping once I re-install. Im also gonna put in an extra ground when I reinstall the cluster as well, and then all I will need is for the new tach amp to come in the mail and I should have all functioning gauges! Or at least I can hope haha


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

larsalan
Superturbo

1,272
02-02-2012, 07:10 PM #18
(02-02-2012, 06:33 PM)sassparilla_kid Okay so I just disassembled my odometer and re-set the mileage to about 270k from 226k...

Why would you do that? Should either have gone for 900k or like 30-40k
mad cred either way but, 200-400k that's totally lame

Rusted out beat down 300d turbo 82' -- RIP
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'
larsalan
02-02-2012, 07:10 PM #18

(02-02-2012, 06:33 PM)sassparilla_kid Okay so I just disassembled my odometer and re-set the mileage to about 270k from 226k...

Why would you do that? Should either have gone for 900k or like 30-40k
mad cred either way but, 200-400k that's totally lame


Rusted out beat down 300d turbo 82' -- RIP
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'

sassparilla_kid
diesel > all other fuels

1,618
02-02-2012, 07:36 PM #19
Hahaha well I wouldn't want people thinking I'm a liar!! I did some thinking and I figure it should now be sort of close-ish to being correct, I should have added another 5k though, but I really do not want to pull the cluster and disassemble that thing again, PITA!!!!! Oh well now I should hopefully be able to calculate mileage Tongue

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
02-02-2012, 07:36 PM #19

Hahaha well I wouldn't want people thinking I'm a liar!! I did some thinking and I figure it should now be sort of close-ish to being correct, I should have added another 5k though, but I really do not want to pull the cluster and disassemble that thing again, PITA!!!!! Oh well now I should hopefully be able to calculate mileage Tongue


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

sassparilla_kid
diesel > all other fuels

1,618
02-03-2012, 01:05 AM #20
FAAACKK!!!!!!!!!! It died again, i think this fix should do the trick though.... hopefully

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
02-03-2012, 01:05 AM #20

FAAACKK!!!!!!!!!! It died again, i think this fix should do the trick though.... hopefully


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

sassparilla_kid
diesel > all other fuels

1,618
02-03-2012, 06:38 PM #21
Got the odo fioxed and working again, and got the new tach amp in the mail today, and now I have all mostly functioning gauges!!!

-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
02-03-2012, 06:38 PM #21

Got the odo fioxed and working again, and got the new tach amp in the mail today, and now I have all mostly functioning gauges!!!


-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!

 
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