Engine pulsing during acceleration....NO fault codes

[TonyH232]

Hi everyone, this has been driving me up the wall.

Symptoms -

• Pulsing during acceleration, usually around 2k rpm.
• As far as i can tell my fuel consumption hasn't changed.
• NO faults codes at all.
• No other issues during driving. Doesn't stutter or anything like that

Fixes I've tried - 

• Changed fuel filter.
• cleaned EGR.
• Added diesel clean at almost every refuel.
• Air filter fine.
• Boost pipe fine (changed it a years or so ago and took it off again to check)

Any guidance would be very much appreciated. I am at a total loss. 

[John McMahon]

Worth checking; I had a Fiat that did the same thing,  Long story short it was traced by an auto-electrician to the throttle potentiometer.  As you open the throttle the central contact slides along.  This differential tells the CPU where the throttle is.

 

In my case it was a broken wire which required some healthy bodge work.

 

BIL had the same issue with his Citroen so you never know

 

HTH.

[TonyH232]

Thanks John, I had seen something mentioned about the throttle position, but brushed it off as I assumed if that was the issue, it would have the same symptoms at every position.

However, I think I'll delve deeper into it and see what I can see.

Hope I come back with some good news.

[TonyH232]

Negative on the potentiometer. Back to square one.