but the tach doesn't work at first....?. I left it sitting for about four months or so after it ran out of diesel (long story). Bled it bled it bled it; wouldn't start for me, and just left it, driving the blazer I had just bought. Randomly tried to start it, and it fired right up.. Since it seemed like it had a bit of moisture inside from sitting so long, maybe I just need to dry it all out?

At least the beast came back alive.....I love this car, but I love my new 4wd, too Maybe the benz is just jealous......it worked perfectly before


the car in question



new winter/tow thingey/4wd toy

There hasnt been a blazer that looked like that in these parts since 1992. All rusted away.

Damned west coasters

Nice truck and benz!

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^^^^
thanks....got the blazer for a grand because the shady po couldn't figure out the gas guage was stuck at half, and it was out of gas......

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RenaissanceMan Labs: where the future is being made today.

Garage:

2017 Chevy Colorado Diesel (nanny state emissions)
2005 Volvo S40 T5 AWD, 77k
1987 Mercedes-Benz 300D turbodiesel, 4 sp auto, 156k - 28.7 mpg
1996 Tracker 4x4, 2 door, 16v, 3 sp auto. 113k - 28.6 mpg

WARNING: this post may contain dangerous free thinking.

Now i hate you even more. Look at that truck, ridiculous. All 4 fender arches should be rusted away, the frame should be cracked and rusty, and there should be a sign in the window asking 3500 because it ran 5 years ago and 99.5% percent of these trucks in the northeast were rusted out and crushed during the clinton years

1000 bucks for that is a steal. Even without a drivetrain people would be asking more here based on body alone.

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This post brought to you by Carl's Jr.

A good friend of mine bought an 84' GMC Sierra, 6.2 Litre Detroit Diesel from a farmer for the low price of $3700. All four fenders were rusted through and there was a fence post in the drivers front.

I looked, he looked and that was the lowest priced one we could find.

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Onus probandi incumbit ei qui dicit, non ei qui negat

I recondition w123/w126/w124/w140/r107/r129/ steering boxes!


1984 300D "Elsa" odo reset 6/2011 147k
1983 300TD "Mitzi" ~268k OM603 powered
1995 E300 "Adelheid" 262k [Sold]

soooooo.......any input on the tach issue?. I think I'm just gonna let it dry out with a little heater inside the shop. I hate to admit it, but I whacked the dashboard and it came to life. I guess that's the old myth of german cars not liking to sit too long.


and for the blazer nuts out there. It's an 87 with 122K. Looking for new wheels/tires because I got a little burnout happy right after I bought it. Otherwise, it's fully functional

Check OVP.

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-- Chris

'95 E300, 216k miles, Silver Surfer
'05 E320 CDI, 138k miles
'07 S550 4matic, 69k miles

Gone but not forgotten:

'76 300D, 350k miles?, SOLD in 1995
'75 240D, 300k miles, SOLD in 1991

can't be the OVP.......it's a diesel. think it's just moisture. tach comes and goes, and the sunroof is the only other switch not working. all in time

Not true, the diesels also have OVP relays in the later years (I believe 1984+) that run the EGR computer. In those years the EGR computer also drives the tach.

You didn't post the year of your SD so I'm not sure if it has the old or the new style tach setup.

The old ones use the Tach amplifier under teh hood and have a pickup on the harmonic balancer. The tach amps frequently go bad and fail intermittently as well in these setups.

The later ones have the pickup on the flywheel and are driven, as I mentioned, by the EGR computer. Most frequent failure in these systems is the OVP, either the relay itself, or the fuse on top of the unit..

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2004 F150 4.6L -My Daily
2007 Volvo XC70 -Wife's Daily
1998 Ford F150 -Rear ended
1989 J-spec 420SEL -passed onto its new keeper
1982 BMW 733i -fixed and traded for the 420SEL
2003 Volvo V70 5 Speed -scrapped
1997 E290 Turbo Diesel Wagon -traded for above
1992 BMW 525i -traded in
1990 Silver 300TE -hated the M103
1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one
1979 Silver 300D "The Silver Slug" -Sold

it's an 84. my bad....no ovp....It's gotta be moisture. No other reason things would quit all of a sudden, and then come back as I let it run with the heater on. Just my guess, though. I'll pull the sunroof switch, clean it up, grease it, and watch it work again......Love this simple thing

They why did you ask if your going to dismiss possible issues without checking them? OVP relays are known to get bad solder joints in them and cause intermittent issues. I guarantee your car has one, they are not just a gasser thing....

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2004 F150 4.6L -My Daily
2007 Volvo XC70 -Wife's Daily
1998 Ford F150 -Rear ended
1989 J-spec 420SEL -passed onto its new keeper
1982 BMW 733i -fixed and traded for the 420SEL
2003 Volvo V70 5 Speed -scrapped
1997 E290 Turbo Diesel Wagon -traded for above
1992 BMW 525i -traded in
1990 Silver 300TE -hated the M103
1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one
1979 Silver 300D "The Silver Slug" -Sold

I only asked because I like to feed the trolls....... And it was only moisture; after it dried out everything worked just like it should and had.