knock sensor
#1
Scooby Regular
Thread Starter
Join Date: Jul 2006
Location: WIGAN
Posts: 798
Likes: 0
Received 0 Likes
on
0 Posts
knock sensor
Can any one tell my where my knock sensor is and how I can tell if its playing up as I thought my ecu should retard the timing when it detects detting
#2
Scooby Regular
iTrader: (7)
Join Date: Oct 2003
Location: Stealth mode on
Posts: 5,277
Likes: 0
Received 0 Likes
on
0 Posts
The knock sensor is on the top of the block down under the intercooler, if you look where the gear box joins the engine it's just in front of that, All I can say is it's a b4stard to change, had to replace mine the other day.
If you look at the engine towards the top right hand side, You'll find a wire and a connector that disapears down under the intercooler.
As for playing up, I've no idea, my check engine light came on indicating it was a knocksensor so I changed it.
£56 +Vat from my local dealer
If you look at the engine towards the top right hand side, You'll find a wire and a connector that disapears down under the intercooler.
As for playing up, I've no idea, my check engine light came on indicating it was a knocksensor so I changed it.
£56 +Vat from my local dealer
#3
Scooby Regular
Join Date: Jun 2006
Location: Scotland
Posts: 154
Likes: 0
Received 0 Likes
on
0 Posts
Just changed mine on a 1995 WRX Jap wagon,
Dont worry its easy, remove intercooler ( slacken jubilee clips & wiggle it out )
Looking from front of car lean over with a small torch & look between the 2 right hand "legs" of the inlet manifold, you will see a 12mm ( maybe 13mm ?) bolt head with a small black or dirty cotton real sized lump of plastic under it.
This is the standard knock sensor, most of the pictures I've seen on the net of knock sensors are in a slightly different place ( further towards the back of engine ) which may be where aftermarket one are placed, who knows but thats where mine was
Disconect electrical connector which was under intercooler & in middle of engine, undo bolt with socket set I managed easily with a 1/2" drive so anything smaller will be fine. The bolt is not tight ( 16 ft/lbs I think ) but is glued in ( locktite ) so requires a bit more to remove, do not overtighten when reinstalling cause you smash the sensor & have to start again !!
I take it you must have a code 22 from your ECU tellin you theres a problem ?
SS
Dont worry its easy, remove intercooler ( slacken jubilee clips & wiggle it out )
Looking from front of car lean over with a small torch & look between the 2 right hand "legs" of the inlet manifold, you will see a 12mm ( maybe 13mm ?) bolt head with a small black or dirty cotton real sized lump of plastic under it.
This is the standard knock sensor, most of the pictures I've seen on the net of knock sensors are in a slightly different place ( further towards the back of engine ) which may be where aftermarket one are placed, who knows but thats where mine was
Disconect electrical connector which was under intercooler & in middle of engine, undo bolt with socket set I managed easily with a 1/2" drive so anything smaller will be fine. The bolt is not tight ( 16 ft/lbs I think ) but is glued in ( locktite ) so requires a bit more to remove, do not overtighten when reinstalling cause you smash the sensor & have to start again !!
I take it you must have a code 22 from your ECU tellin you theres a problem ?
SS
#4
Scooby Regular
Thread Starter
Join Date: Jul 2006
Location: WIGAN
Posts: 798
Likes: 0
Received 0 Likes
on
0 Posts
i have no code coming up its just the ecu is not retarding the ignition when the engine starts to det i was hoping that it might be a dodgy wire or sumert
#5
Scooby Regular
Join Date: Jun 2006
Location: Scotland
Posts: 154
Likes: 0
Received 0 Likes
on
0 Posts
pretty sure if there was a wiring fault the ECU would tell yah about it, as a sensor fault how do you know your gettin DET ? knocklink or extreamly good hearing ?
SS
SS
#6
Scooby Regular
Thread Starter
Join Date: Jul 2006
Location: WIGAN
Posts: 798
Likes: 0
Received 0 Likes
on
0 Posts
oh you can here it it sound like some one is playing drums on my engine and slight black smoke or grey smoke out the back the more boost i run the worse it gets
#7
Scooby Regular
Join Date: Nov 2004
Location: In a V6 Mercedes
Posts: 2,327
Likes: 0
Received 0 Likes
on
0 Posts
Take a look on here, you want the section about fitting a Knocklink.
Cars/Modifications/gauges
http://www.stefanostadal.homedns.org/index.htm
Rob
Cars/Modifications/gauges
http://www.stefanostadal.homedns.org/index.htm
Rob
Last edited by scoobfan; 31 July 2006 at 09:31 PM.
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
28
28 December 2015 11:07 PM
Mattybr5@MB Developments
Full Cars Breaking For Spares
12
18 November 2015 07:03 AM