Engine surge when under load

[Paul Rice]

Bit hard to describe but when accelerating in a higher gear, say 20mph in 3rd (Would normally do this with ease) it seems to initially miss a bit. Thought i had cured it with a dose of red X but its back, any ideas folks?

 

[t-tony]

Anything showing on the code reader Paul?

Tony.

 

[Paul Rice]

Anything showing on the code reader Paul?

Tony.

No nothing, Thoughts: a coil, split air intake or fuel doesn't feel mechanical but not 100% on that.

 

[t-tony]

My thoughts would be inlet cam sensor starting to fail. They don't always throw a code, my Z3 2.0 didn't.

Tony.

 

[Paul Rice]

My thoughts would be inlet cam sensor starting to fail. They don't always throw a code, my Z3 2.0 didn't.

Tony.

Thanks Tony will add to list
Ordered so can try that first

 

[Paul Rice]

BIG thankyou @t-tony looks like you was bang on with your diagnosis
New sensor fitted car driving better than ever
Yet again the forum and its members have saved me pounds
Looks like another pint I owe you Tony!

 

[t-tony]

No worries Paul. Happy to help mate.

Tony.

 

[ppavuk]

my money would be on VANOS. there are rebuild kits available online, and the job itself like 2-3h for semi-skilled amateur mechanic. i had refurbished vanos on my car and it changed it entirely. no more power loss under any load at any revs.

i should have red replies first

 

[mikebmeehan]

My thoughts about the engine surge when under load are an issue, which you need to give careful attention to. You do not want to damage your vehicle!