Hesitation?

[PocketFighter]

Hey guys

So finally got round to doing my clutch.... Good God the car is completely different now it's done, love it!

But now I have another issue, noticed more before the clutch got done, when idling, there's a slight hesitation and drop in revs, I've changed the spark plugs and its still doing it, ran injector cleaner through the system and used other cleaning to see if anything can be helped....I don't think it's the injector because it doesn't feel like a misfire from there... That said, I do think it could be the coil pack....But there is definitely a hesitant in the lower revs/slight misfire happening, has anyone else experienced this before? Is it a known issue?

[WiNgNuTz]

Spark plugs? On an XUD? Or is this in the wrong section?

[PocketFighter]

Ah... Apologies, I'm using tapatalk, hard to navigate! Can someone move the thread to the right section please lol

[WiNgNuTz]

No worries, done for you.

[Eeyore]

coilpack?

[PocketFighter]

Thanks Wingnutz

Eeyore, that's what I'm thinking... Is there anyway I can test it to confirm? It's different on a bike lol

[son of a beesting]

How does it react when revving? I had an issue once where I would get a slight hesitation on WOT and it was a blocked fuel filter.

Might be worth looking at?

[PocketFighter]

Once she's warmed up, the hesitation/misfire only happens when idling

What else I've now noticed is if I push the clutch in quick the revs drop very quick (sometimes) another is when I'm going down hill if I push the clutch in it wil stall - this has happened 3 times

[son of a beesting]

Could it be ISV related?

[PocketFighter]

ISV? Sorry... No idea what that means mate

[adam b]

Idle control valve, throttle switch, lambda, coolant temp sensor

[son of a beesting]

Hi

Try this http://www.pugaddicts.co.uk/2013/12/guid...ntrol.html

[PocketFighter]

Hi

Try this http://www.pugaddicts.co.uk/2013/12/guid...ntrol.html

Amazing! I'll give this a go tomorrow! Fingers crossed

Thanks for the replies guys, appreciate it!

[son of a beesting]

It helped when I had a similar problem. Might only be temporary but worth a shot and could narrow down the issue

[PocketFighter]

It helped when I had a similar problem. Might only be temporary but worth a shot and could narrow down the issue

Thank you mate, I'll keep you posted

[PocketFighter]

Cleaned up my ICV, worked for a bit and has started doing the same thing again

Next question, going to order a new one, is there any different between the plastic and metal cased units? I can get them from work

[son of a beesting]

Hi, from what I hear its best to get a proper magneti marelli one as the other can fail relatively soon.

At least you know what is causing the issue now.

[PocketFighter]

Bought a Magneti one from work, going to attempt to do this tonight along with my brakes as they need doing as well... Argh one thing after another at the moment lol

[RetroPug]

It could be the ICV, but it could also be the CTS, the TPS, a coilpack etc.

If the ICV change doesn't work (good idea to just do it anyway all the original ones are buggered, had 3 gti6s and all 3 had an ICV problem at some point): does the hesitation go away once the car is up to operating temperature?

[PocketFighter]

Annoyingly the app keeps crashing on me, but I've replaced the ICV, it's worked, have been trying to add a video, though there is a slight issue, the revs are no longer dropping which is good, but seems like a slight hesitation from the back end like it's still missing, but the engine is revving sweet and everything like that... Is that a known "sound" on the 306?

If I can upload a video then I will!

[vincent1]

Maybe try a ecu reset? im sure also when you fit a icv on some cars theres a procedure something like turning the ignition on and off so many times?

[adam b]

Maybe try a ecu reset? im sure also when you fit a icv on some cars theres a procedure something like turning the ignition on and off so many times?

Not on these. You are welcome to disconect the battery for a bit but it hasn't ever done anything on any of mine - they aren't that intelligent and don't 'work around' problems.

I suspect lambda or throttle position sensor. Both can cause you initial throttle 'lag', easy to check the TPS as it can fill with oil which will toast it. You could unplug the lambda to see if it is then worse - they only use it on partial throttle so flat out should make no difference.

[PocketFighter]

Maybe try a ecu reset? im sure also when you fit a icv on some cars theres a procedure something like turning the ignition on and off so many times?

Did this, took for a spin, turned off, turned on again, another spin, off and the on again and was fine after that

Maybe try a ecu reset? im sure also when you fit a icv on some cars theres a procedure something like turning the ignition on and off so many times?

Not on these. You are welcome to disconect the battery for a bit but it hasn't ever done anything on any of mine - they aren't that intelligent and don't 'work around' problems.

I suspect lambda or throttle position sensor. Both can cause you initial throttle 'lag', easy to check the TPS as it can fill with oil which will toast it. You could unplug the lambda to see if it is then worse - they only use it on partial throttle so flat out should make no difference.

Hmmm I'll have to have a look, I checked the throttle cable and it seemed good, gave it a lube up but I'm not sure how much slack there's meant to be as out was a little slack - but can only compare this to a motorbike throttle!

I'll check the TPS and lambda, I'm hoping it's nothing too dramatic

Maybe try a ecu reset? im sure also when you fit a icv on some cars theres a procedure something like turning the ignition on and off so many times?

Maybe try a ecu reset? im sure also when you fit a icv on some cars theres a procedure something like turning the ignition on and off so many times?

Not on these. You are welcome to disconect the battery for a bit but it hasn't ever done anything on any of mine - they aren't that intelligent and don't 'work around' problems.

I suspect lambda or throttle position sensor. Both can cause you initial throttle 'lag', easy to check the TPS as it can fill with oil which will toast it. You could unplug the lambda to see if it is then worse - they only use it on partial throttle so flat out should make no difference.

---

Bloody tapatalk!

[adam b]

It's on the underside of the throttle body, not where the cable connects. Worth taking any slack from the cable

[PocketFighter]

Took up some of the slack, seems a lot more responsive and no throttle lag... We'll see when I'm driving it later on lol