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I have a 2000 S70 2.4 turbo. 116k. I had the ETM tested and they said it was good, also had a yellow label, been replaced at some point. I re soldered the contacts on the ABS module, took care of some of the problems I was having. The problem is, the car lacks power big time. I unplugged the MAF it idled a little funny but eventually evened out. I drove it around for about 5 miles and no difference, still very sluggish and poor acceleration, so I kind of ruled that out. when I unplugged it the CEL never came on which I thought was weird. It gets insanely poor gas mileage also. So any input would be appreciated. I am now kind of leaning toward a bad o2 or maybe a vacuum leak?

The CEL is not on, it came on once and gave me the fuel adaption bank 1 p11 something I dont recall. I cleared it and has not come on since, the car is my daily driver and it is starting to get frustrating performing this way. Sometimes when its warmed up all the way and the temp gauge is in the middle or close to it, the car shows flashes of what I know it can do and then starts acting sluggish again.

Has anyone else had this problem?
 
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