View Full Version : temp and tach acting weird!!
ryanc280
01-24-2006, 08:14 AM
anyone knows about this? i have 95 c280, suddenly my temperature gauge is not working.. after a few minutes my tach is not working also! sometimes it works sometimes dont. help!!!??!!?thanks!
benzonline
01-24-2006, 09:20 AM
This happened on my friend's 94 C220. Turn the car on and the rpm and speedometer are dead...then while driving they would shoot up.
welcome to the club;)
hmmm,possibly either ECU or wiring harness related.
have you checked the engine harness for damage?
roundeler
01-24-2006, 11:11 AM
Bad ground, if you don't have a ground to complete the circuit, all goes. I can't tell you where the grounding problem may be, but it should be the first suspected. Clean contacts, check connections.
Originally posted by roundeler
Bad ground, if you don't have a ground to complete the circuit, all goes. I can't tell you where the grounding problem may be, but it should be the first suspected. Clean contacts, check connections.
good point!...check the grounding on the engine...as i think most of the sensors use ground return
ryanc280
01-24-2006, 05:28 PM
thanks a lot guys! im going to check it. thanks again.
jnenad16
01-24-2006, 09:26 PM
Originally posted by ryanc280
anyone knows about this? i have 95 c280, suddenly my temperature gauge is not working.. after a few minutes my tach is not working also! sometimes it works sometimes dont. help!!!??!!?thanks!
my guess, corroded contacts at the back of the instrument cluster.
nenad
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