So I've got an old '76 240D, never had a problem w/ the temp gauge in the dash but now it won't read at all.
I've also noticed that my gas gauge doesn't move at all either, it never worked (bad sender) but it always danced around. Now it too is like the temp needle, doesn't move.

Any leads on what might be up?

mark in Portland

I guess abracadabra didn't make them work either.

sounds like a ground problem to me. Try running a new ground wire fromt he back of the cluster to the body.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

Yeah I imagine its something simple, I'll try to check out the ground.....

mark

Is there one ground for the instrument cluster or more than one? Because my oil pressure gauge is working just fine, its the temp and tank gauge that isn't working........

mark

I should also add that I have the "fast blinker" syndrome, have had it for awhile, both with the left and right turn signal blinking fast (and then every so often it is fine).

I don't know if this has anything to do with my gauge malfunction but it is an electrical issue in the same area so I though I'd mention it.......

mark

The oil pressure gauge isn't electrical, its got an oil line attached to the back of it.

Just run a ground wire from the back of the cluster to the main ground point behind the cluster.

Are all the flasher light bulbs good? if so then i'd blame the fast blinks on the relay.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg