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#1
08-23-2010, 12:31 PM
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erractic spedometer w126 87 sdl
Rencently my spedometer has begun to randomly act strange.... it says im going far faster then i am. im thinking this is a sensor or electrical problem. today while doing 30 it jumped to 60 then around 100 while i was going 65 (based off guestimation of surround traffic and rpms) then popped back to 65 and worked normally for the rest of my commute. this has happened a few times before but its getting the be a regular occurance. any ideas? i couldnt find other threads with the search outlining a similar problem others have had
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1987 300SDL "Rudolf" 239k 8/10 Gone but not forgotten -1980 F250 4X4 351C Snowplow "The Beast" -1976 Caddy Eldo Convertible, in triple red. "Red headed Slut" -2002 Honda Accord EX-V6 loaded 107k, My first brand new car! *IM A HORRIBLE SPELLER* 
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#2
08-23-2010, 12:37 PM
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ground
Check for corrosion on ground strap on back of instrument panel..sometimes strap gets corrosion and does really weird stuff.
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#3
08-24-2010, 08:06 AM
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Mine did that and then died. I too, plan to pull the cluster and check grounds. Good luck
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John Schroader bio burnin' 83 300D, '83 300 SD, '79 240D "I've never met a man who was good at making excuses who was good at anything else" Ben Franklin "You cannot permanently help a man by doing for him what he could and should do for himself" Abraham Lincoln
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#4
08-24-2010, 08:33 AM
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My temp gauge on my W124 is doing the same thing. I tried a different sensor, didnt change things so I figure its another thing to do when I get to pulling the cluster.
__________________
Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort....  1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles  1987 250td 160k miles English import  2001 jeep turbo diesel 130k miles  1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving
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#5
08-24-2010, 11:24 AM
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im thinking it maybe a ground issue. i noticed a while back when i turn the key to glow to start the car all the idiot lights light up... i dont remember them doing that when i first bought the car
__________________
1987 300SDL "Rudolf" 239k 8/10 Gone but not forgotten -1980 F250 4X4 351C Snowplow "The Beast" -1976 Caddy Eldo Convertible, in triple red. "Red headed Slut" -2002 Honda Accord EX-V6 loaded 107k, My first brand new car! *IM A HORRIBLE SPELLER*
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