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Idle hunting I have an alfa romeo 156 with a bosch throttle body and ecu. When at idle the revs will fluctuate around the idle speed of 1000rpm some times stabalising at incorrect speeds, some times continuously rising and falling. I've read of similar problems in older bosch units but the fix refered to adjustments made that mine will not allow, various screws and such absent presumably because mine is a little newer. Can you help me?

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Get a can of throttle body cleaner and spray the intake realy good also remove the mass airflow sonsor in between the air box and the intake blow it out with an air compressor this should fix the problem

Posted on Mar 27, 2008

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Alfa 156 cd bp037822602183

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1991 acura legend , weird idle ,,,, like up and down

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No sound from sterio when engine is reved.

This sounds like you have a problem with the voltage regulator in your car. Normally it is part of the alternator. Does your lights on the inside and outside of car get dim when the engine is idle, and do they get brighter when you rev the engine? Does your battery gage go way down when the engine is idle and then go way up when the engine is revved up? These are all signs that the regulator is not working.

The radio will only operate normal at the proper voltage, if your voltage regulator is putting out too much voltage when the car is revving, it can make the radio malfunction.

Have the alternator/regulator in your car checked. It may just be that part needs to be replaced.


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