Quote:
Originally Posted by oldsinner111
I have a p410 code,................?
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This may apply. My experience as follows....
Found that code effects a lot of SL cars.The ECU runs a Switch Over valve with three lines plumbed into it. One from the intake downstream of the throttle, one from the 'boost' housing if Kompressor fitted, and one to the Check Valve just ahead of the EGR flow valve.
Found these hoses/lines to be loose and leaking. ECU sends Pulse Width Modulated power pulses to Change Over Valve according to 'time', throttle position, and coolant temperature.
One check is as follows....
Warm up engine.
Hold rpm's at 2500 or so steady until you see O2 ranging from 100mV to 800mV every second or quicker.
Briefly push throttle to WOT and quickly release, allowing engine to return to idle.
You should see O2 drop to 100mV or less in less than 20 seconds. This triggers fuel cut.
If O2 fails test, install new O2.
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