Hey boys and girls,

i have read through many threads this morning regarding cleaning ICV etc regarding hunting.

the car will rev 1000 -2000 rpm like clockwork (not straight away starting from cold, but within a few mins)

the ICV was cleaned very well and degreased, as well as every other inch / sensor in the engine bay.

we had the manifold off, and put it back on with a new standard gasket and sealent, could it be that this hasnt sealed correctly causing this, or the TB gasket.

all other threads state ICV needs cleaning, or possible the small pipe of the inlet which has cracked (will look after work) but before i have to take it to the garage and get bent over(no tools, and cant park the road i live on currently ) any one have any ideas? oddly enough it was perfect before the cleaning session!


sorry for the essay!

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Ex-Black 6 - Speed has never killed anyone, suddenly becoming stationary... That's what gets you.

not noticibly, its not the quietest of engines with the magnex lol, i can try again tonight, will it be quite obvious if the manifold isnt sealed correctly ?

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Ex-Black 6 - Speed has never killed anyone, suddenly becoming stationary... That's what gets you.

Yeah as above it's just a paper gasket, it should work fine without sealant.

Weird that it doesn't do it immediately.. I'd imagine if it was a leak/something not sealing up properly it would do it straight away. Is it once the engine warms up to a certain temperature?

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Democracy is two wolves and a lamb voting on what to have for lunch..
..Liberty is a well-armed lamb contesting the vote.

Project é - my 306 project thread.

As you know matey, I had similar problem with the revs rising but this was more or less from cold.

I cleaned the stepper but also found the small hose that connects the stepper to the inlet manifold intake pipe had split.

I replaced and the problem was gone.

An ECU reset can't hurt as well while your there


btw, does the car stall or just the eratic revs?

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Ok Michael

Same symptoms as mine had but I have had the thing apart.

Sounds like you are right about the gaskets causing the issue.

Things like this always happen as well.
You try and make the car go/look better by cleaning them up and they bite you in the ass for the privilege

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My Pugrun 2007/2009 video clips
Take a look

Pugrun 2007...Lose yourself

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PSN ID: MarkSixysix ( DiRT 3 GT5, NFS:Hot pursuit).

P1 Diablo red 6 gone but not forgotten

Im almost certain it will be an air leak somewhere I popped a hose on the SC Rallye last week and it was like the hunting issue on steroids, was like riding a bucking bronco when it juddered forward under acceleration

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Just Drive It

If there are no leaks then it could be the connection to the stepper motor. Taking it off and putting it back together may solve it, need to make sure the plug is firmly on and all connections are clean

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Just Drive It

If it is the stepper motor I would expect it to be stalling when dipping the cluch while driving, quite scary when you lose normal steering/braking while pulling up to busy roundabouts!! I had this fault a few years ago.

Deffo stepper valve!

I have had it. The procedure I carry out is.

Disconnect the battery or ecu straight away, whichever suits you best. Then dis-connect the stepper valve. Clean it with whatever you like, I found just a bit of kitchen towel worked you don't need brake cleaner etc.

Wipe any excess oil from where the stepper is housed and then connect and re install. At this point you shouldn't have
re-connected the battery/ecu it needs to be unplugged for at least 20 mins!

Now with mine I found after cleaning the stepper and reseting
the ecu my revs were still up and down between 900-2000 rpm and it would still feel as if the car was " driving itself " however be patient! I found mine took a couple of days to settle again properly and since then it has been fine ever since.

As said above as long as the stepper is fine and are all other
sensors then there shouldn't be a problem.

PATIENTS!!!!

If all the above fails the burn the bas**rd!!!

Good luck Matt

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Team Nile 6
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currently abusing type r's in a town near you ™
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness

Spray the areas you suspect may be leaking with a solvent degreaser, the engine will suck it in through the leaky area if you have one and the revs will rise as the engine burns the highly flammable solvent. Its a simple fault finder but well proven and cheap.

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Helmholtz resonator? Strange it only happened once driving?!?!

So today I had some time to start looking at the ICV & Map Sensor.

But before doing anything to them I noticed this...



Would this be causing the problem ?

Obviously it needs to be replaced but would this cause a problem like what I described ?

Cheers

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Thank Phat Its Friday

Team: Gti6

So I should just crack on with the ICV & Map sensor cleaning then ?

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Thank Phat Its Friday

Team: Gti6