Quote:
Originally Posted by 97 SL320
At idle , the mixture might be slightly different and there is a chance an idle to off idle switch transition may give a short term richer mixture ( like an accelerator pump on a carb ) . I don't know this for sure, just throwing possibilities out there.
I'd probably monitor the EHA with a meter and look for a change with the switch working / not working.
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I'm pretty sure the throttle position switch on the throttle plate serves all other functions in regards to the ECU and EHA. As far as I know the switch I disconnected only controls fuel cut at coast.