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Old 04-18-2013, 11:42 AM
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Join Date: Nov 2012
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1977 280SL Euro fuel injection wiring diagram

I recently purchased a 1977 280SL 6 cylinder fuel injected M110.982 engine that was running bad. Thinking the problem was it sitting up I took the change at a good price. The problem is that the ECU under the dash went out and instead of replacing it with the correct unit they put a 450SL ECU in and rigged the wiring harness to 6 cylinders. It runs to rich and dumps to much gas into system.
I have the correct ECU but would like the wiring diagram.
Trent B
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Old 04-19-2013, 01:03 PM
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Join Date: Dec 2000
Location: Long Island, NY
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as it happens I have a spare of the older M110 engine manual. The old ones include section 7.4 with the d-jet info. -CTH
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Old 04-19-2013, 01:48 PM
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Join Date: Nov 2004
Location: Dallas, TX
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Are you sure that your car is a 77? It sounds to me like your car should be a 75 or earlier.

With best regards


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