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  #1  
Old 04-25-2002, 06:44 PM
Emu Rancher
 
Join Date: Mar 2002
Location: Washington, DC
Posts: 664
Red face tach problems. already tried ciggarette trick

I tried this trick, tried lubricating the femal connetctors and everything. I thnk some wires might be crossed or there's a short though becuase when I turn the AC fan on high the needle jumps. Can someone plase help me out. thanks

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W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.
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  #2  
Old 04-25-2002, 08:22 PM
Registered User
 
Join Date: Aug 2000
Posts: 49
What do you mean by "lubricate?"

The contacts should be clean.

With the black cap loose, and separated cap from circuit board, push the circuit board assembly onto the base with the engine running. Do you get any tach display? If not, the board is probably bad. Some people have removed the white potting materials; and, resoldered the board successfully. I tried this once; but, found it impossible to get all of the white stuff off. Besides, my board had cracked. For $75, you can get a new amplifier assembly complete with the black cover.
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Jeff Naumann
Torrance, California
1972 220D 138k miles (sold)
1982 300SD 263k miles
1989 BMW 750iL 183k miles
1993 Dodge D250 Cummins 5.9 202k Miles
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  #3  
Old 04-25-2002, 08:32 PM
Registered User
 
Join Date: Mar 2002
Location: northeastern PA
Posts: 437
Hi guys,
I did all the same things, too, including resoldering all the connections in the amplifier. NOthing helped. I did find this though. the rubber on the 3 wires that all run to the engine block had disintegrated. Anyone considered replacing these wires or cleaning/fixing the sensor?
Still hoping for the miracle cure,
Paul
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  #4  
Old 04-25-2002, 11:09 PM
Emu Rancher
 
Join Date: Mar 2002
Location: Washington, DC
Posts: 664
yeah I tried just pressing it down with the engine on. I got tach readout for less than a minute and it went away. Someone posted a while ago that putting some lubricant on the female end of the connector cures his problem so thats why i tried that. I'll check the wires and then order a new unit.
__________________
W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.
Reply With Quote
  #5  
Old 04-25-2002, 11:23 PM
Emu Rancher
 
Join Date: Mar 2002
Location: Washington, DC
Posts: 664
sorry about the picture its the best one I have. I haven't been able to take any when It is sunny. could be wrong about the color name but here it is.
Attached Thumbnails
tach problems. already tried ciggarette trick-side-big.jpg  
__________________
W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.
Reply With Quote
  #6  
Old 04-25-2002, 11:43 PM
Emu Rancher
 
Join Date: Mar 2002
Location: Washington, DC
Posts: 664
Wink

thanks for the compliment. I think the color might be silver blue
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W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.
Reply With Quote
  #7  
Old 04-28-2002, 03:28 PM
Emu Rancher
 
Join Date: Mar 2002
Location: Washington, DC
Posts: 664
I agree about the EURO headlights. I've been on the look out for a good deal on some of those for a while. I was thinking about going with some 18s. I found a great deal for rims and tires for 1000$. What do the 15 hole 15"s you mentioden look like?
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W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.
Reply With Quote
  #8  
Old 04-28-2002, 03:53 PM
Holson Adi's Avatar
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Join Date: Jul 2001
Location: Boston, MA
Posts: 2,561
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  #9  
Old 04-28-2002, 04:07 PM
Emu Rancher
 
Join Date: Mar 2002
Location: Washington, DC
Posts: 664
I thought those were the wheels. Those look nice too but I wanted something with a bigger diameter. The 18s im looking at are very tastefull. They aren't chrome or anything and they're pretty conservative. I'll post a pic if you want.
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W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.
Reply With Quote
  #10  
Old 04-28-2002, 04:18 PM
Holson Adi's Avatar
Registered User
 
Join Date: Jul 2001
Location: Boston, MA
Posts: 2,561
I once saw a midnight blue 280SE with the Euro headlights, bumpers, etc. It had the AMG bodykit and the newer style 17" AMG monoblock II's. I told myself that I gotta have one of those... :p

This is my drool item of the week...
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1824268315

If that was mine, the US headlights would've been long gone.
The interior is unbelivably clean! Look at the leather seats!
I'm not a big fan of the old style AMG wheels either. However the body kit looks good.
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  #11  
Old 04-28-2002, 04:26 PM
Emu Rancher
 
Join Date: Mar 2002
Location: Washington, DC
Posts: 664
Talking

If i had that money I would bid without hesitation. That car is absolutely amazing. And the mileage on that thing. Its jsut unbeleivable.

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W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.
Reply With Quote
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