Crack in Knock Sensor
#1
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Aug 2009
Posts: 100
Likes: 0
Received 0 Likes
on
0 Posts
Crack in Knock Sensor
Car is a 1998 JDM Version 4 STI, stock except Walbro pump and Japspeed decat downpipe.
I got my first solid check engine light the other day. When I checked the code it was 22, knock sensor. I cleared the code and went for a short drive, all was well. I read up a bit about the knock sensor, and thought maybe I should take out the sensor and have a look, maybe a clean up would help.
I found it a bit tricky to remove the sensor, just to the passenger's side of the throttle body one the TMIC is removed. When removed I saw it had a little crack in the side. I cleaned it up a little, put black tape over the crack and replaced it, but I suppose I need to get a new one.
1. Does the crack signify that the sensor is no good any more, or does it just cause trouble when the sensor gets wet? Apart from the CEL, the car does also appear to have been getting less mpg lately.
2. Has anyone used the Pulse 8 sensor?
http://cgi.ebay.co.uk/SUBARU-KNOCK-S...#ht_2955wt_905
It is significantly cheaper than the Subaru original at £42 vs £65 inc. shipping.
3. Finally, does anyone have any good tips to ease the removal / installation of the sensor? There seemed to be all sorts of coolant hoses in the way, and I didn't want to disconnect them in case I got bubbles in my coolant, or spilt coolant all over the place. In retrospect it would have made matters a lot easier to disconnect them and get them out of the way, but I wasn't sure if they'd be still full of coolant after the car was standing a while.
Thanks a lot, Tom
I got my first solid check engine light the other day. When I checked the code it was 22, knock sensor. I cleared the code and went for a short drive, all was well. I read up a bit about the knock sensor, and thought maybe I should take out the sensor and have a look, maybe a clean up would help.
I found it a bit tricky to remove the sensor, just to the passenger's side of the throttle body one the TMIC is removed. When removed I saw it had a little crack in the side. I cleaned it up a little, put black tape over the crack and replaced it, but I suppose I need to get a new one.
1. Does the crack signify that the sensor is no good any more, or does it just cause trouble when the sensor gets wet? Apart from the CEL, the car does also appear to have been getting less mpg lately.
2. Has anyone used the Pulse 8 sensor?
http://cgi.ebay.co.uk/SUBARU-KNOCK-S...#ht_2955wt_905
It is significantly cheaper than the Subaru original at £42 vs £65 inc. shipping.
3. Finally, does anyone have any good tips to ease the removal / installation of the sensor? There seemed to be all sorts of coolant hoses in the way, and I didn't want to disconnect them in case I got bubbles in my coolant, or spilt coolant all over the place. In retrospect it would have made matters a lot easier to disconnect them and get them out of the way, but I wasn't sure if they'd be still full of coolant after the car was standing a while.
Thanks a lot, Tom
#2
Scooby Regular
iTrader: (4)
Join Date: Sep 2009
Location: Bath
Posts: 930
Likes: 0
Received 0 Likes
on
0 Posts
yep that sensors shot,how about
http://cgi.ebay.co.uk/Impreza-WRX-ST...item3f04f1b4b9
fitted mine with a bit of a fiddle without taking off coolant hose ,trick is to use the wire on the sensor to pull off the sensor and bolt as one mate.not difficult only fiddly,
http://cgi.ebay.co.uk/Impreza-WRX-ST...item3f04f1b4b9
fitted mine with a bit of a fiddle without taking off coolant hose ,trick is to use the wire on the sensor to pull off the sensor and bolt as one mate.not difficult only fiddly,
#3
Scooby Regular
iTrader: (4)
Join Date: Sep 2009
Location: Bath
Posts: 930
Likes: 0
Received 0 Likes
on
0 Posts
just read apparently the area of the knock sensor cord must
be positioned at a 60" angle relative to the engine rear.??
and the 12mm bolt must be tightned to 24nm/17.4 lb ft too mate for it to work correctly
be positioned at a 60" angle relative to the engine rear.??
and the 12mm bolt must be tightned to 24nm/17.4 lb ft too mate for it to work correctly
#7
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Aug 2009
Posts: 100
Likes: 0
Received 0 Likes
on
0 Posts
Well I decided to buy this one
http://cgi.ebay.co.uk/ws/eBayISAPI.d...#ht_1315wt_905
It was a decent enough price, supposed to be low mileage OEM, immaculate feedback etc. Car almost immediately got CEL (solid) once I got stuck in traffic today, so had to be done.
Hope it's here soon and does what it says on the can.
Tom
http://cgi.ebay.co.uk/ws/eBayISAPI.d...#ht_1315wt_905
It was a decent enough price, supposed to be low mileage OEM, immaculate feedback etc. Car almost immediately got CEL (solid) once I got stuck in traffic today, so had to be done.
Hope it's here soon and does what it says on the can.
Tom
Trending Topics
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