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Matt
Matt, Mechanical Engineer
Category: Mercedes
Satisfied Customers: 22255
Experience:  BEng hons Mech engineering, in auto industry 22 years
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When accelerating on the left lock my aclass 160 cdi misses

Resolved Question:

when accelerating on the left lock my aclass 160 cdi misses but it does not happen on the right lock
Submitted: 2 years ago.
Category: Mercedes
Expert:  Matt replied 2 years ago.
Hello

This could be a wiring issue as things tend to expand when hot and its possible a poor or partial electrical connection is being pushed apart on one of the major sensors so check the connection plug and wiring to the following;

Airflow meter

Crank position sensor

Cam position sensor

O2 sensor

Throttle position sensor

Also worth checking the connections to the fuel pump for the same reason - unplug each in turn and give them a good squirt of switch / contact cleaner - Not WD40

and also unplug and inspect the main power relays and fuses for signs of overheating or corroded terminals - so the ones for the ECU and the fuel pump

And also unplug the wiring loom connections in the engine bay one at time and inspect for corroded or recessed pins.

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