hesitation under 2000rpm

[aronmatic2]

Hello guys
I have 1996 s6 20vt. My car has hesitation on lower rpm under light throttle. Its shows only on low rpm, light acceleration.
Everything is fine on full throttle acceleration.
Maybe the same problem, i have bad idle on cold engine . Idle is fine on warm engine.

I changed maf, coilpack, spark plugs. No leak on turbo pipes.

Thanks.

[Henkjan]

how did the plugs look? all the same colour?

maybe the injectors?
at least that's what it was on my 200q when it had similar symptoms, a blowout with air solved it.

[aronmatic2]

I checked the plugs, all of them looks same dark brown. The injectors are brand new. I had the same issue before changed a lot of things.

Its very bad on cold engine, a little bit better when hot engine temp.

[Swizz]

Maybe there is something wrong with the coolant temperature sensor [sending faulty signal] or the harness to it?

The o2 sensor [lambda probe] may be bad?

[larsaskogstad]

Would first check the lambda, then potentiometer / throttle wire. By hesitation do you mean "stuttering" while accelerating?

- Is there any difference if you you have partial throttle engaged and full pedal to the metal?

[newsh]

Would first check the lambda, then potentiometer / throttle wire. By hesitation do you mean "stuttering" while accelerating?

- Is there any difference if you you have partial throttle engaged and full pedal to the metal?

Post is from back in June mate.

[larsaskogstad]

Post is from back in June mate.

oh, saw someone answered before me so yeah

[newsh]

oh, saw someone answered before me so yeah

Yeah, think someone is trying to get their post count up lol

[larsaskogstad]

Yeah, think someone is trying to get their post count up lol

I like post counter But I see you are in charge mate

[newsh]

I like post counter But I see you are in charge mate

I’ve been here a while

[larsaskogstad]

I’ve been here a while

yeah right. Join date modified. prob max 3 months