displaying posts 1 to 8 of 8

Author Subject: newbie with gti6 manifold fault
kieron306xs

Newbie

Location: stafford

Registered: 07 Sep 2009

Posts: 3

Status: Offline

Post #1
hello all im new to this site and will be taking alook round it after this question, right i have a 306 1.8 16v xs that had a plastic inlet manifold on it, i fitted the gti6 inlet yeseterday with new gasket and shorter bolts etc and extended all the wires too but after puting it all on it would now idle at 950rpm it was near 3k! any idea what could be causeing this or shud i use the 1.8 sensors or the gti6 ones thanks for this

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306 1.8 xs 16v
Posted 7th Sep 2009 at 21:44
cwspellowe

Seasoned Pro

Location: Calderbank

Registered: 19 Jul 2009

Posts: 6,496

Status: Offline

Post #2
Is it now idling at 950 or 3k?

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Bye bye Sundance Kid Sad
Posted 7th Sep 2009 at 21:46
kieron306xs

Newbie

Location: stafford

Registered: 07 Sep 2009

Posts: 3

Status: Offline

Post #3
cwspellowe wrote:
Is it now idling at 950 or 3k?


3k its at it wont come down at all so after 2 mins or so i had to turn it off

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306 1.8 xs 16v
Posted 7th Sep 2009 at 21:48
lukejenks101

Seasoned Pro

Location: Bristol

Registered: 15 Mar 2008

Posts: 5,694

Status: Offline

Post #4
Throttle cable being pulled slightly?

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Posted 7th Sep 2009 at 21:49
kieron306xs

Newbie

Location: stafford

Registered: 07 Sep 2009

Posts: 3

Status: Offline

Post #5
lukejenks101 wrote:
Throttle cable being pulled slightly?


that was the first thing i looked at so took it off and was still reving it nuts off

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306 1.8 xs 16v
Posted 7th Sep 2009 at 21:50
24seven

Seasoned Pro

Location: Derby

Registered: 05 Oct 2005

Posts: 6,221

Status: Offline

Post #6
check that the manifold has actually sealed properly along the lower edge. There are a few things which stop it from sitting square onto the head, I can't remember what exactly from memory.

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Ph1 306 GTi 6 | RX8 231 S1 | YBR 125 Cafe Racer | MT-03 660
Posted 7th Sep 2009 at 22:02
xsi-in-stealth

Junior User

Location: carshalton

Registered: 08 Aug 2009

Posts: 84

Status: Offline

Post #7
have you tried an ECU reset? link to faq: http://www.306gti6.com/forum/showthread.php?id=16861&page=last

my car kept revving to 3000rpm after changing the idle control valve, but then was told that the ecu had to be reset, and the car ran smoother than ever. just a long shot but worth a try for just diconnecting the battery. Hope you sort it mate. Chris

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16V-XSi
Posted 7th Sep 2009 at 22:29
jcphat

Seasoned Pro

Location: In the day room, Nurse!

Registered: 22 Feb 2008

Posts: 1,061

Status: Offline

Post #8
Air leak is the most likely reason and after that is the stepper motor-ICV- correctly fitted? Also check the throttle body is going back to a fully closed position when the cable is slack and not catching. The sensors should not do this.
Incidentally do not be tempted to fit the GTI 6 injectors they will overfuel dreadfully, the originals are much the best choice.

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Posted 7th Sep 2009 at 22:57

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