rich09

right, im not having any luck with this car. lol

i was on my way to see someone about my boost issue, but after 5 minutes of driving the CEL came on.
i got to his house and we checked the code and its a knock sensor (22)
looked at the dipstick and somehow there was no oil (i had topped it up about 2 weeks ago) so filled that up again and all was good. driving home and the light came on again so i pulled over to reset the ecu but it still appeared.

after driving for another 5 minutes, the light went off and hasnt com back on after another 20 miles of carefull driving.

i had a search but this seems to be very car dependant so any ideas what is going/has happened?
long shot i know...

thanks
rich

seddomyster

iTrader: (9)

have you replaced the knock sensor. mine was on/off now an then so replaced it an all was good. yours maybe on its way out

rich09

no i havent, as i said it only came on earlier today.
i dont even know where it is or really what it does..

seddomyster

iTrader: (9)

detects knock an without or failed ur engine will end up knackered. if you have the tmic its just under this behind inlet manifold slightly to passanger side. replace an hope your problem is fixed

stedee

iTrader: (4)

i love that description. its a pain in the **** mate. you wont bloody see the thing and finding the hole again -lol been there done it but as said probably is knock sensor - cheap fix at least

dannyboygti

iTrader: (13)

wernt a very good night was it m8 discoverd bother are cars are under boosting

rich09

lol, my main concern is that its a bit odd that the light came on when there was no oil in it and its done some real damage but i will replace the knock sensor just incase..
ebay??

is this all it is?
http://cgi.ebay.co.uk/subaru-impreza...item4cf229d395

seddomyster

iTrader: (9)

if you can remove yours an the codes are same then thats the one so best to check or ask what year car the sensor came off

rich09

right, i started the car and the light wasnt on.
i drove for about 5 minutes and nothing, then the light camer back on whilst it was jus ticking over outside my house.
every time i blipped the throttle, it would go off and it did this loads of times. is this a definate knock sensor failure??
thanks

seddomyster

iTrader: (9)

if thecode 22 came up then yes knock sensor. replace an reset ecu an see if it clears light

GONZO01

iTrader: (6)

Where is the cheapest place to buy a knock sensor for a uk classic on a w plate?