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Discussion Starter #1
Any one help me out ive a corsa d 2008 1.7 cdti it jumps up and down on idle and also lack of power until it boosts was getting p2620 fault code so changed throttle body no change been in it today was sat on idle it was ok turned the heaters and window wipers on and idle started jumping up and down thought mabey battery or bad earth it’s had egr delete and dpf delete any help appreciated also put a fuel metering valve on back of pump
 
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