Uncovering the Secrets Diagnosing and Fixing Acceleration Hesitation in 2002 Mercedes S420

This occurs when the car is fully warmed up, when going from 4th down to 3rd. It has approx. 18k miles, and other than this "quirk", it performs very well. Most hesitation problems are caused by a bad mass air flow sensor. A bad sensor will give you a code that looks like a vacuum leak. Top 5 Mercedes-Benz Transmission Problems. · Low Transmission Fluid · Transmission wire harness 13-pin (O-ring) connector oil leak/contamination · The valve body ... If it has, and considering the age of the vehicle, fuel filters, pumps, and accumulator play into this issue. Water in the fuel can cause ... This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other ... What is happening with the hesitation is the torque converter is not locking up all the way because it is preparing for a rapid changing of ... Oxygen Sensor for Mercedes-Benz C280 CL500 CL600 E320 E420 E430 ML320 ML430 S420 S500 ... 2002-2005 for Benz C230,2001-2005 for Benz C240 ... hesitation/hard ... The acceleration problem returned with fault codes relating to voltage on 3 coil packs. I replaced all 8 coil packs (aftermarket) and cleared ... It could be your crank position sensor is starting to go bad. I would also change out your fuel filter. Sign in to reply. Any reading over 900 ohms, I would replace it. It won't set a fault code in the engine control unit. The other solution is the Mass Air Flow MAF ...