The tach on my 83 300TD has been flaky since I bought it a couple of months ago. It works 5-10% of the time and usually only for a few seconds. After reading about tach amp repairs on the forum, I wasn't looking forward to attemping the de-potting and resoldering method, so this was a repair on the back burner.

I spent Saturday morning at the junkyard scavenging for miscellaneous parts, mostly off an 82 300D donor. I grabbed the tach amp, unsure if the part number was compatible. One of the easiest parts to remove! $5 at checkout (grouped with other "Misc" items.)

The part number was identical. I unscrewed the pre-existing one, screwed in the replacement, and I have a working tach for $5! If only all my repairs went this easy. I guess the diesel mechanic gods were in a good mood that day!

Now all I have to do is repair the fuel sender and I'll have a fully functional instrument cluster!

OT: First full tank of ULSD this weekend during a roadtrip to NJ from MD. $2.36/gal at the Flying J in NJ is about $0.30/gal cheaper than here in Baltimore.

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'83 300TD 176k "Sherman"

Don't you just love when that important part you need can't really be identified by the untrained eye & is charged under misc.! I'll bet you could've got the blower motor amp or some other high priced item that just looks like a black box for not much more. Great going! Paul.

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1984 300CD red/blk 290,000 partial resto
1980 240D 4 sp Brn/palomino gone
1997 Mazda Miata STO edition wife's baby
1988 Lincoln Mark VII LSC next resto
1986 Subaru GL wagon daily
1993 Isuzu pickup field beater
2008 Honda Civic EX-L 5sp wife's new car
1978 Honda XL350
1974 Honda XL70 my Calif. ride in HS