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W126, relays by firewall to what ('87 model)?
On my new (to me) SDL, there are some new relays by the firewall and I'm not sure what they go to.
The first two are to the right of the ABS brain, one's black ~1"x3" and the other ~0.75"x0.75". The smaller of the two also has a 10A fuse. Anyone out there know what those are for or go to?
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I'm not a doctor, but I'll have a look. '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG] |
#2
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Not sure about your SDL but on my 1990 Coupe the small one with the fuse is the Over Voltage Protection (OVP) relay, and the larger is the fuel pump Relay.
rogerben |
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Quote:
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What function does the OVP Relay serve? Obviously it's important, but I'm curious.
__________________
I'm not a doctor, but I'll have a look. '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG] |
#5
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Cuts voltage to certain system beyond a certain level. A common warning of a bad OVP relay in a Diesel is the ABS light. In fact I've never heard of an ABS light indicating a problem with the ABS in an MB :/ A bad OVP relay also causes problems with cruise control, ACC, EDS, etc. but you might not notice the changes right away. Pull it off and see what happens.
Sixto 95 S420 87 300SDL |
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Guess it can't hurt anything to try.
__________________
I'm not a doctor, but I'll have a look. '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG] |
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