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#1
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Preglow relay interchange: w201 to w123?
I have been having some possible relay issues (another thread) and I just found my spare preglow relay... which turns out to be for a 190d, based on my check of the part number (005 545 18 32).
Two questions: - any impediment to using it? - did the 190d system have a post-glow function built in (relay stays activated and plugs hot for a while after startup)? If so, for how long? Thanks
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Mac 2002 e320 4matic estate│1985 300d│1980 300td Previous: 1979 & 1982 & 1983 300sd │ 1982 240d “Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22 |
#2
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If the relay has 5 pins in the smaller connector, it's an afterglow relay. The fifth pin, actually marked pin 6 since space 5 is blank, is for a coolant temp sensor. Afterglow time is determined primarily by coolant temp. FWIW, preglow indicator time is more dependent on engine temp than in a conventional relay. If you restart a hot engine, you might not notice the preglow indicator come on because it'll go off very quickly even if the plugs are still energized. I don't know if preglow cycle time varies with engine temp or is different from the maximum cycle time of a conventional relay.
If it fits, try it. Sixto 87 300D |
#3
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It's four live pins on the small plug. Thanks for the quick reply.
__________________
Mac 2002 e320 4matic estate│1985 300d│1980 300td Previous: 1979 & 1982 & 1983 300sd │ 1982 240d “Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22 |
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