Date registered: Jan 2013
Vehicle: '00 E240
Mentioned: 9 Post(s)
Quoted: 31 Post(s)
Revs cold P - very high (such normally after starting the engine for 30 seconds, but not for idling).
I think you need to look parameters on module EFP (E-GAS) to understand the reason. But I do not know how to read it (you need to watch it live parameters: signal status S29/3, M16/1s2 and other) ...
Tonight I received vehicle data with the same problem - all parameters for HFM is good, but i see that the throttle is opened strongly, so idling 1000 firing angle -3* (must be +8*), ie, HFM ECU want revs down due to(through) firing angle but can not make them correct.
Code 5 on E-GAS:
Check Stop Lamp switch S9/1 (microswitch brake pedal)
PS: Revs on hot engine slightly above normal (visual), but it's better to control the scanner, because tachometer is not a precision instrument, and I met with a situation where he was lying on a 150 rpm.
Last edited by Mike.K; 07-25-2015 at 12:11 AM.