high fuel consumption and lagging acceleration

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Aug 18, 2014 | 03:09 AM

karamoja

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W124 E220 M111

high fuel consumption and lagging acceleration

hi guys,

i need help on this. i recently got a W124 E220 M111. i noticed that it's fuel consumption is abnormally high, almost at the rate of 2 KM/L.

the vehicle also has lagging acceleration. the pedal is hard when pressure is applied and after it picks there is a slight over revving.

i don't know whether this is tied to the consumption or they're two isolated problems.

kindly assist

Aug 24, 2014 | 02:40 PM

GotDaBenz

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Joined: Aug 2007

Posts: 197

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From: Long Island, NY

'03 C320 Sedan, '04 SAAB 9-3 Cabrio

How are the rpm's? If they are high it could be tranny.

Aug 25, 2014 | 04:01 AM

karamoja

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W124 E220 M111

the rpm's are ok so far..the only thing i have noticed is, sometime's when the accelerator is pressed the rpm's jumps to almost 2700 even after releasing making that over revving noise

Sep 17, 2014 | 06:36 PM

cortschrothNJ

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Joined: Sep 2014

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From: New Jersey, Massachusetts

1999 E320 4Matic Sedan

has the car ever felt like it was going to stall after coming to a stop from cruising speeds?

Sep 17, 2014 | 11:46 PM

karamoja

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W124 E220 M111

Yes it does...rpms going down to 500,so the car struggles to stay on

Sep 18, 2014 | 04:06 PM

cortschrothNJ

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From: New Jersey, Massachusetts

1999 E320 4Matic Sedan

if the check eng. light is on also i could have something to do with the torque converter clutch solenoid, if the torque converter clutch isnt completely disengaging it can cause the car to stall coming to a stop and would also contribute to poor acceleration. I mean it could be sensor also i would definitely check for dtc's and let that lead to a more specific diagnosis

Sep 25, 2014 | 06:36 PM

corsaschnell

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From: SoCal USA

S65 AMG

Quote:

Originally Posted by cortschrothNJ

has the car ever felt like it was going to stall after coming to a stop from cruising speeds?

Several things can cause this. One possibility is a bad EVAP purge valve, in my case that was the cause. Luckily the CEL came on and Dealer was able to get a code and resolve it.