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#121
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If you guys are interested...I do repair the old tach amps. I'd be happy to help out.
--Kris
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k |
#122
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As per the attachment, need some clarification on the schematic :/
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#123
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Quote:
i'm between 2nd and 3rd year for my classes Off to class now actually, Signal Analysis with Matlab, yay fun times.... haha. |
#124
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Subscribed, I hope to never need the good info here tho' .
__________________
-Nate 1982 240D 408,XXX miles Ignorance is the mother of suspicion and fear is the father I did then what I knew how to do ~ now that I know better I do better |
#125
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On my 85 Euro 300TDT, I came with the large clock, no Tach. Looking, I have the pickup on the front with a grey wire leading up to the Diagnostic post, No pickup that I can see on the rear flywheel housing. I would like to add a tack to mine now. Whats currently the best way to do this?
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#126
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If the pick up is on the harmonic balancer and runs into the same port the old 81-84 style tach amp uses..I wonder if you could get one of those and then run some wires into the cabin for the tach gauge.
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k |
#127
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If the pick up is on the harmonic balancer and runs into the same port the old 81-84 style tach amp uses..I wonder if you could get one of those and then run some wires into the cabin for the tach gauge.
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k |
#128
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That's what I'm thinking of doing, I would have to find a tach amp as well, since my car doesn't currently have one, just to diag port.
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#129
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my problem guy's was the socket,it screwed into. I bought carbon paste,that worked a year.What happens alot,is the sockets the pins fit into work their way down,and pins won't make contact.I finally hammered a small wood wedge to keep sockets up,and super glued it.
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1999 w140, quit voting to old, and to old to fight, a god damned veteran |
#130
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I'd read that as 3300 uh, 10 ma, 160 ohms
What are you trying to do? Build one? If you're into electronics, easier to find a used one and repair it if it's NG. Scrape away the potting compound, resolder all solder joints then see if it works. If not, trace the +12 V input which leads to a (from memory 33 ohm 1/4 W resistor) which gets very hot and is burned out often. Replace it with a 1/2 W and that usually fixes it. I have never had to to more than that in all the ones I've worked on.
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#131
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Does anyone know where or IF the tach amp is in my '91 350SD ? My tach needle does not move but I cannot locate the cylindrical part in my engine bay. eBay had one on for $150 that claimed it fits my model.
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#132
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Hi JohnRedman,
The 91 won't have a tach amp in the same sense as the OM617A engine'd cars did. In the 91, you have the OM603. I believe the tachometer is run by the EDS computer. More than likely your tachometer gauge is the problem. In my experience the gauge in the cluster is at fault. The only exception is the OM617A equipped cars that have the cylindrical tach amp. I service instrument clusters, if you are interested, I'd be happy to help out. Just drop me an email or PM. --Kris
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k |
#133
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Well, I planned on pulling the instrument cluster to replace all the little lights with leds because the regular ones are terribly dim (as soon as I locate the right type). I watched a Youtube on using the long hooks to loosen it after disconnecting the speedo cable. I guess that I just have to source (eBay?) the replacement tach?
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#134
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I think your options are:
1) Replace the tachometer pod with used. 2) Repair the tachometer pod (typically a bad cap, resistor or solder joint) --do it yourself or sending it out) As a point of reference I only charge $35 + shipping for tach/clock pod repair work. --Kris
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k |
#135
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did anyone ever find this guy or find another option for making them new?
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