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  #16  
Old 08-18-2002, 07:46 PM
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I really don't know the car, so I can only tell you from my experiece on the '560 SEL I have. One thing we have in common is that my car's problems where there at purchase, and it had the same mileage as yours when I bought it - 97k.

The problems are gone now. I did the work myself...
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Henry Bofinger
1989 560 SEL (black/black)
2001 Audi TT Roadster (silver/grey)
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  #17  
Old 08-18-2002, 10:56 PM
David C Klasse's Avatar
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OVP failure symptoms (my 95 C280 + most others) include:

Stalling while at idle, when slowing down, and often when slowing down as you curve.

No hot-start. If engine is warm when shut off, and a re-start is attempted, the engine & starter will turn, but the engine might not catch; it cranks, but might not start.

An ABS (or SRS) indicator light, indicating low voltage.

Also, using the car to jump another car, or jumping your Mercedes often makes the OVP fail.

Good luck!
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2003 E500 Brilliant Silver, 48,000 miles!
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1995 C280 (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #18  
Old 08-21-2002, 07:48 PM
imaginasian
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Thanks for the info Dave. How hard is it to change the OVP - is this something I can do myself?
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  #19  
Old 08-21-2002, 08:31 PM
imaginasian
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Well I'll be damned - it took less then 2 minutes to remove this thing

Here's a shot of the OVP in my 95 C220 - is this the bad Part No?

I searched for a new one at Parts Shop and their part # showed

Overload Relay P2056-70038 $60.23

Hbofinger - thanks for your advice again . I think will replace my OVP (since it has never been replaced to my knowledge) and if that doesn't work, I will then move onto the injectors and confer with my mechanic with your info!
Attached Thumbnails
ovp relay failure symptons-ovp.jpg  

Last edited by imaginasian; 08-21-2002 at 08:38 PM.
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  #20  
Old 08-21-2002, 09:49 PM
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Yup. That's the unit...
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1989 560 SEL (black/black)
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  #21  
Old 08-21-2002, 10:12 PM
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You have the newer OVP
Troublesome OVP was 000 540 52 45- replaced with 540 67 45

Still may be a bad OVP.....
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  #22  
Old 08-21-2002, 10:41 PM
imaginasian
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darn - i was hoping for it to be the older part No. The fuse is still good...hmmm, could still be a bad OVP but perhaps Hbofinger is on the right track.

interesting that the FastLane picture shows a slight different OVP inking?

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  #23  
Old 08-22-2002, 07:12 AM
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Fuse has nothing to do with it - it's the soder joints inside the box (if you have one of the bad ones)...
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1989 560 SEL (black/black)
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  #24  
Old 08-22-2002, 08:42 AM
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Here is a High Tech OVP test.
When car won't start, tap the relay w/screwdriver handle and retry...
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  #25  
Old 08-30-2002, 11:12 PM
imaginasian
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got the new OVP in this week, popped it in and car started fine. test drove it for a few days and the warm engine start symptoms are still here *sigh*

hbofinger....you suspicions may be right!
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  #26  
Old 08-31-2002, 07:12 AM
sunil190e-1.8's Avatar
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have been following the ovp relay post with enthusiasm-my car is a c200 uk spec-where is the this relay located in the c200 merc?
any advice appreciated
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