http://www.benzworld.org/forums/w210-e-class/1437670-cold-engine-upshift-delay.htmlHi is any one know why transmission starts shift on high rpm (2500-3000)? I did tune up (maf, spark plug, fuel filter and oil change)
hopefully its not from the work your doing . but if your qualified for the job then should be no problem . So your saying it wouldnt kick in when you give it gas untill 2500rpm? Your new MAF is it OEM or aftermarket? Are you getting CEL check engine light ? Did you pull any codes ? Have you had it hooked up to Mercedes Star System ?I put back old maf sensor drive it last night for 4 hour everything is perfect so I don't know what was the problem, maybe new maf is no good.