Mercedes ML270 Revving, Dont know why?

nortonchase

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Joined
Jul 16, 2013
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Location
Northampton UK
Your Mercedes
Mercedes W123TE & C200
Hey... I wondered if someone could help me. I have a ML270 and I went away and disconnected the battery. Now I have reconnected it when I turn it on the car just revs madly?! Any ideas.... cheers!:)
 

BAD Arrows

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Apr 12, 2013
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Location
Manchester
Website
www.performance-blue.co.uk
Your Mercedes
E55 AMG (W211) + SL 350 3.7 (R230)
1st check and clean the idle control valve (assuming it's happening when you turn it on and leave it at idle and not when you sit and rev it).

Hope this helps.
 

stumo

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Sep 4, 2008
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Location
VIC, Australia
Your Mercedes
ML270CDI 2002 facelift| Sprinter 316CDI 2003 LWB
Its a diesel, there is no idle control valve.

I'd be checking you didn't disturb the throttle cable when you disconnected the battery. The cable runs along the top of the firewall where the back of the battery is, and over to the throttle pot towards the opposite side of the firewall. Check that cable and pot is free and springs back.
 


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