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#1
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Ok I've read numerous posts and replys and I thought the OVP relay was my problem but now I wonder. When the outside air is cold or just cool my 380 se has high idle(1500 rpm) for the duration of my drive but when the air is warmer like today (75) it doesn't high idle. This is driving me crazy! I had the idle valve replaced but that didn't last long. I thought I read about an idle thermostat possibility. Could that be it? Thoughts appreciated.
1985 380 se 192k |
#2
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I am not sure, but does this engine have idle thermo valve. Maybe Benzmac can tell you.
------------------ Jeff L 1987 300e 1989 300e 1987 BMW 325 |
#3
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All US 380s had elecronically controlled idle valves. None had thermostatic valves. Some early European 380s did have manual adjustments with thermostatic warmup air valves.
The valve is not being controlled when the motor runs that high with that system. There is a separate controller for idle on 380s and it is known for cold solder joints on the PC board. Over the years we have fixed 75% of the bad controllers with your symtoms by just resoldering the PC board. ------------------ Steve Brotherton Owner 24 bay BSC Bosch Master, ASE master L1 26 years MB technician |
#4
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If the resolder work doesn't fix it, you can get a rebuilt one from us on the partsshop.
------------------ Benzmac: Donnie Drummonds 1992 500E (very soon I hope 1981 280GE SWB ASE CERTIFIED MASTER AUTO TECHNICIAN SERVICE MANAGER FOR 14 BAY FACILITY MERCEDES SPECIALIST 8 YRS PARTNER IN MERCEDESSHOP.COM |
#5
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quote: Thanks guys! Hopefully I can narrow it down. This is a great site! I wish I had known about it years ago. Could have saved myself alot of cash. |
#6
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el miguel: i had a similar problem with my 89 260E, it idles high when in park and neutral. emailed steve and he was right on - it was the OV relay!! thank you steve.
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