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+--- Thread: Cruise Control (/showthread.php?tid=3296)
Cruise Control - sassparilla_kid - 01-24-2012
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!!!
RE: Cruise Control - hannes_s - 01-24-2012
Diagnostics:
http://userweb.windwireless.net/~jimc/mamerepairs.html#cruisetest
Diagrams:
http://foorum.clubmb.ee/attachment.php?aid=4791
http://foorum.clubmb.ee/attachment.php?aid=4792
RE: Cruise Control - aaa - 01-24-2012
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
RE: Cruise Control - sassparilla_kid - 01-24-2012
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
RE: Cruise Control - sassparilla_kid - 01-26-2012
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
RE: Cruise Control - aaa - 01-26-2012
Pic? My guess would be to remove the silicone and take a heat gun to the solder.
RE: Cruise Control - sassparilla_kid - 01-26-2012
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
RE: Cruise Control - hannes_s - 01-27-2012
(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.
RE: Cruise Control - sassparilla_kid - 01-27-2012
(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
RE: Cruise Control - sassparilla_kid - 01-30-2012
Tach amp ordered
RE: Cruise Control - hannes_s - 01-30-2012
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
RE: Cruise Control - sassparilla_kid - 01-30-2012
Awesome, if the new amp doesn't solve the problem I'll check the relay out
RE: Cruise Control - aaa - 01-30-2012
The OVP relay is a 1985 and later thing.
RE: Cruise Control - hannes_s - 01-30-2012
(01-30-2012, 03:38 PM)aaa The OVP relay is a 1985 and later thing.
OK, I did not know that.
RE: Cruise Control - sassparilla_kid - 01-31-2012
(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
RE: Cruise Control - sassparilla_kid - 02-02-2012
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
RE: Cruise Control - sassparilla_kid - 02-02-2012
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
RE: Cruise Control - larsalan - 02-02-2012
(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
RE: Cruise Control - sassparilla_kid - 02-02-2012
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
RE: Cruise Control - sassparilla_kid - 02-03-2012
FAAACKK!!!!!!!!!! It died again, i think this fix should do the trick though.... hopefully
RE: Cruise Control - sassparilla_kid - 02-03-2012
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!!!