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  #1  
Old 07-07-2003, 02:12 PM
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Join Date: Apr 2001
Posts: 167
Mystery to me

The automobile in question is '87 300 TD.
It has been raining here for a month.
So I load about 250 lb. in the back of the car and am looking forward to seeing how thwe self leveling is functioning.
Start the car, drive a couple of miles, look at the guages and notice that the anti lock light is lit. A minute later I hear/feel and little click and the tack stops functioning and th AC stops putting out cold air.

Check fuses they all appear OK.
Changed 1 I think it was 7.

Park the car.

Next day same story. Same symptoms.

Park the car.

2 or 3 days later no symptoms.

Take it to my tech, he looks at the fuses says I have to leave it. Which I can't do that day.

A week later it rains again, and it all happens again.

Next day no problem. No symptoms.

What on Gods green earth is going on?

Thanks in advance.

Lion
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  #2  
Old 07-07-2003, 02:25 PM
moedip
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just a suggestion - check and clean your ground connections - sounds like a bad ground. If it is affected by moisture - it most likely is a connection. When I say grounds - I don't only mean at the battery - but anywhere a wire is attached to the chassis or engine block. Look for rusty or corroded connections.
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  #3  
Old 07-07-2003, 06:52 PM
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Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
If I recall the EGR transducer makes the engine speed signal. It is also my impression that it gets its power from the overvoltage protection relay!
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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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  #4  
Old 08-25-2003, 01:13 PM
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Join Date: Apr 2001
Posts: 167
Steve wins the cigar

OVP relay was the culpret.
Thanks to alll.
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