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I find it hard to understand what you wrote. If i understand it you have found cracks in the rubber bellows in the intake system from the intercooler outlet to the throttle.
Unless the cracks are thur the rubber thickness completely they present no problems.As a way to check if they do apply some silicone sealer over the cracks and run the engine and see if it helps the condition.I don't think you have found the problem because they would allow unmetered air into the intake,which would lean the mixture out not make it run rich.
?you have said you replaced the AMM.Do you still have the orginal unit? Why did you change it? Was it a new,rebuilt,or used unit you replaced it with?
At this time i am uncertain about the AMM.If the way you have been operating the car you may have not met the requirement built into the engine CPU program to activate the burn-off cycle.The hot wire sensor element could be dirty due to no burnoff of the element when the engine is shut down.This would leed to a rich output from the AMM no matter how you had it adjusted.I don't know exactly the factors the Bosch engineers have set in the CPU program to be meet to call in the burn-off cycle after shut down.But i know there is a subroutine that must be meet to trigger the burn-off cycle at shutdown.You will have to run the engine until it heats up to normal operating temp,and also bring the engine RPM's above 4000 rpm's as a starting point to trigger the burnoff cycle of the AMM.
Report back when done and confirm a burn off cycle by looking for the glowing wire on burn off.Then run the engine to see if the AMM is doing a better job controlling the mixture.....
posted by 4.156.198...
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