Hi... New member, new to Mercedes diesel, first post,

I have just spent about 16 hours (half the time on the internet) trying to get the tachometer to work.

What I've done:

Checked rpm sensor... receiving 5.67 volts at idle
Checked OVP relay... its receiving voltage and the fuse is good ...also, have 2 matching OVP relays from another 85 that definitely works in the other 85.
Checked EGR inside kickpanel... no voltage ...It has two wires going into it at the center pole and the pole directly above it. All other posts/poles are blank. The cap has the number 3 on it.

any ideas or is it time to tear into the dashboard?

Thanks

dennis

Does your overboost solenoid open at >2k <6psi ?

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1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

I do not know... I will test that as soon as my daughter gets back with the car.

thanks!!

dennis

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'84 300D (211k) *New*... (Wife's)
'85 300TD (174K) 10th Year... (Mine)
'96 F-350 7.3L Dually (149K) Since New
'85 300D (156K) ~~~Wrecked~~~ Damn it! (parts)
'84 300D (176k) ~~~Wrecked~~~ Damn it! (parts)