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  #1  
Old 03-31-2008, 05:36 PM
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560sel dies when let off the gas

over the weekend i put new fuel injectors in my 1990 560sel, it runs great on the highway but when i let off the gas to coaST it dies just like that. what do i need to check? air fuel mix, timming, or idle control module? i am stumped and frustrated.

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Old 03-31-2008, 06:43 PM
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a vacuum leak will cause this , does it idle fine?

Ben

Last edited by Benz Mercedes; 04-01-2008 at 07:31 PM.
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Old 03-31-2008, 11:46 PM
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no it does not idle but for less than 5 seconds. checked the duty cycle it is at 97.6%. in the summer i had it at 49%. do not know what happened.i put a new o2 sensor on then an soldeded it together.
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Old 04-01-2008, 07:30 PM
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you may have disconnected a hose under or around the intake.

Ben
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  #5  
Old 04-03-2008, 03:15 PM
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had 2 loose injector once tighten them down problem fixed.

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