issue with revs on neutral

[p.eco]

Hi Guys,

Wondering if anyone came across this issue - Just came back from first MOT and they could hold the revs to do the emission test. I have never discovered this my self but yes, when I push the gas pedal the revs are going slightly up then they fall back, then up again, basically they are all over the place. However i do not have this issue when driving? If anyone has this issue and what it is causing please let me know....thx

1.8TSI manual

 

[GTunney]

Doesn't the cars ECU limit the revs when not in gear?

I've noticed on my car I can't rev over 3k if I'm in neutral.

 

[cupra14]

Just came back from first MOT and they could hold the revs to do the emission test. I have never discovered this my self but yes, when I push the gas pedal the revs are going slightly up then they fall back, then up again, basically they are all over the place.

I think they don't have to be steady, but do have to be within a range. You can read the MoT manual free online if you look.

However, underlying the issue could be a fault - maybe not apparent to you in driving. Consult OBD live data (as well as checking for codes).

 

[Deleted member 103408]

Doesn't the cars ECU limit the revs when not in gear?

I've noticed on my car I can't rev over 3k if I'm in neutral.

Yes VW Limit the revs when a non driving gear (DSG Box) and top speed

 

[p.eco]

I did a few tests and find out the following. car running ok when idle. when i press the throttle slightly with no gear, it slowly revs up to 4k itself and then fall down to 1k (with throttle in the same position). I gave it a go with the 1st gear in, and now it acts as it should, if i press the throttle hard it revs high, Im able to keep revs stable and under control. This explain how i didnt discover this while normal driving and i do not rev the car when on neutral. still puzzled what it could be. Connected the OBD and live figures goes up even i do not press the pedal any harder....