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Old 11-18-2002, 07:41 PM
Registered User
Join Date: Oct 2002
Location: South Carolina
Posts: 85
OVP preventive maintenance?

It seems that the OVP is one of the first items that is suspected for many problems posted.
My 190e will soon be celebrating her 10th birthday.
I have already replaced all fuses in the fuse box.
Do you recommend that I replace this relay as preventive maintenance?
Is it located behind the plastic wall by the battery on a '93?
My thanks for any advice.
1993 190e 2.3
Spruce Green Metallic
62k original
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Old 11-18-2002, 07:55 PM
Senior Member
Join Date: Sep 2002
Posts: 2,486
It sure can't hurt!
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Old 11-19-2002, 08:49 AM
John F
Posts: n/a
OVP repair

I had an unusual hesitation, then a complete stall, on my '85 500SEC.
In checking all my fuses, I opened the clear top on the OVP. To my amazement, the fuse fell out into my hand!!
I pulled the whole thing out and took the red top off. I found that the THIN aluminum contacts for the fuse had loosened. I took a fine pair of needle nose pliers and GENTLY squeezed the contacts together. I replaced the fuse and it has not faltered since.
I think that the weight of the plastic end of the fuse was working as a lever arm against the contacts and forced them open over time(vibrations). Anyway, it took longer to find the problem, than fix it!!
Good luck, John F.
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