loss of power

leopena

New member
Hi and thanks in advance, I have a 2007 sprinter 2500 and I was losing power like once a month and I will turn it off and turned back on and it will work fine, until Today I haven't figured out the problem and now it does it like 20 times a day I bought a scangage II and my manifold pressure is about 30 at 3000 rpm and when it goes to a limp mode I can't get it more than 15, I replaced the O2 sensor, the EGR valve I checked the inter-cooler hoses for cracks I replaced the fuel filter and I need to check for the turbo resonator. any ideas if somebody can tell me what is the normal manifold pressure because I'm thinking that I may have a bad turbo booster.
Thanks
 

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