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Author Subject: cutting out when hot
nicks306gti6

Newbie

Location: york

Registered: 28 Jun 2011

Posts: 5

Status: Offline
Post #1
Hi all

I know this has been been posted many times but my problem is very specific.
Once the car gets above 90 on the temp gauge, as i come up to a junction or change down, depress the clutch pedal, the revs fall to about 400/500 rpm and the car either struggles to get back up to the normal 800 rpm hot idle or just cuts out. The car starts fine again and repeats the above time and time again. parking the car when hot is almost impossible.
If i leave it to cool it's fine again until hot then repeat above.
The car performs faultlessly in every other respect.
Just fitted a brand new marelli stepper icv and no change.
I am keen not to have to go through changing sensor after sensor etc so wonder if anyone else has had the same SPECIFIC problem as i have and has managed to cure it by changing or fixing what ?

cheers all

Nick (tearing my hair out)
306 gti-6 1998 80k totally standard

________________________________________

NICK F
Posted 14th Jul 2011 at 03:03
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Lecktorious

aka G.

Location: Edinburgh

Registered: 08 Jan 2009

Posts: 920

Status: Offline
Post #2
Have you got an open air filter fitted?

________________________________________

'98 Nile Blue 306 GTi 6
Posted 14th Jul 2011 at 03:06
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nicks306gti6

Newbie

Location: york

Registered: 28 Jun 2011

Posts: 5

Status: Offline
Post #3
standard air filter, standard air box

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NICK F
Posted 14th Jul 2011 at 03:09
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paul_13

Senior User

Location: Reading

Registered: 10 Dec 2008

Posts: 693

Status: Offline
Post #4
Did you reset the ecu when you fitted the new ICV. It'll keep messing up until you do.

Look under the FAQ section for how to reset ECU

________________________________________

205 GTI6- Rebuilt engine, lightened flywheel, lightened pulley, 307 hdi brakes, Koni struts on gravel spec springs, 22mm TB's, 24mm ARB, Roll cage, Citreon ZX rear dampers, SL434's, Xsara box, Quickrack, Pipercross enclosed induction kit. Smile

Private work, not a prob Smile
Posted 14th Jul 2011 at 03:22
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nicks306gti6

Newbie

Location: york

Registered: 28 Jun 2011

Posts: 5

Status: Offline
Post #5
yes indeed. reset the ecu surgically !!

________________________________________

NICK F
Posted 14th Jul 2011 at 03:25
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paul_13

Senior User

Location: Reading

Registered: 10 Dec 2008

Posts: 693

Status: Offline
Post #6
Ok believe ya Razz

ECU temp sensor is the next port of call really, it's the green sensor out of the three on the thermostat housing

Take it out and give it a clean, see if that makes any difference. Might be caked in shite, mine was. I sourced a new one in the end as I didn't like the look of it.
Again will require a ecu reset

________________________________________

205 GTI6- Rebuilt engine, lightened flywheel, lightened pulley, 307 hdi brakes, Koni struts on gravel spec springs, 22mm TB's, 24mm ARB, Roll cage, Citreon ZX rear dampers, SL434's, Xsara box, Quickrack, Pipercross enclosed induction kit. Smile

Private work, not a prob Smile
Posted 14th Jul 2011 at 03:28
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lotek

Seasoned Pro

Location: Berkshire

Registered: 04 Dec 2007

Posts: 6,107

Status: Offline
Post #7
ecu reset wont solve icv

you need to keep turning ignition on wait and turn off without starting Yes

this sets the Stepper motor position Smile
Posted 14th Jul 2011 at 03:29
Profile
paul_13

Senior User

Location: Reading

Registered: 10 Dec 2008

Posts: 693

Status: Offline
Post #8
^ I've solved a problem with ICV on mine before by reseting. Hovis has aswell.
Didn't know about that for setting the ICV. You learn something new everyday Big grin

________________________________________

205 GTI6- Rebuilt engine, lightened flywheel, lightened pulley, 307 hdi brakes, Koni struts on gravel spec springs, 22mm TB's, 24mm ARB, Roll cage, Citreon ZX rear dampers, SL434's, Xsara box, Quickrack, Pipercross enclosed induction kit. Smile

Private work, not a prob Smile
Posted 14th Jul 2011 at 03:34
Profile
nicks306gti6

Newbie

Location: york

Registered: 28 Jun 2011

Posts: 5

Status: Offline
Post #9
ordered a new coolant temp sensor today, green one as you suggest so i'll give that a go when it arrives.
will all the coolant pi55 out when i remove it or will a cold thermostat being closed limit that ?
cheers

________________________________________

NICK F
Posted 14th Jul 2011 at 03:39
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paul_13

Senior User

Location: Reading

Registered: 10 Dec 2008

Posts: 693

Status: Offline
Post #10
p*ss out Smile

Don't forget to bleed it.

You'll need a coke bottle with a bit of electrical tape or similar around the top. Press this on to the expansion tank opening. (best with 2 people) open up the bleed screws on the thermostat housing and matrix hose. (may of missed one)

Squeeze bottle to push the water into the system wait for coolant to come out of bleed screws then nip them up.

________________________________________

205 GTI6- Rebuilt engine, lightened flywheel, lightened pulley, 307 hdi brakes, Koni struts on gravel spec springs, 22mm TB's, 24mm ARB, Roll cage, Citreon ZX rear dampers, SL434's, Xsara box, Quickrack, Pipercross enclosed induction kit. Smile

Private work, not a prob Smile
Posted 14th Jul 2011 at 03:45
Profile
nicks306gti6

Newbie

Location: york

Registered: 28 Jun 2011

Posts: 5

Status: Offline
Post #11
ah, i see LOL

cheers.
will report back once cts fitted is fitted.

________________________________________

NICK F
Posted 14th Jul 2011 at 03:52
Profile
pugjim

Seasoned Pro

Location: Sheffield

Registered: 11 Mar 2007

Posts: 1,380

Status: Offline
Post #12
Theres also a bleed screw on top of the rad. To minimise fluid loss just put your thumb over the hole when you take the temp sensor out and put the new one back in quickly.
Posted 14th Jul 2011 at 17:56
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adam b

Seasoned Pro

Location: The Nam

Registered: 24 Jan 2006

Posts: 12,829

Status: Offline
Post #13
You won't lose much fluid if you are quick.

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Nothing to see here
Posted 14th Jul 2011 at 18:17
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smegal

Seasoned Pro

Location: Leeds

Registered: 26 Dec 2005

Posts: 5,940

Status: Offline
Post #14
Mine does this, and I suspect it's an earth that comes loose when the under bonnet temps are high.

Everything else is fine as shown by diagnostics.

________________________________________

Ex SC-6

Now in a Megane R26
Posted 14th Jul 2011 at 20:24
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