Check Engine Light

[neill54]

my cel has came on in my 92 wrx going for its mot on monday too

car has been sitting for about a week without being started has always been fine not really missed a beat in the 18 months ive had it

it needs a service and a small hole in the exhaust at the cat section needing patched

just wondered if there could be anyything else and how do i find out what is wrong with it before i need to take it to a garage

thanks

neil

[neill54]

update:

ive just found and read the article in an earlier thread about connecting the read connectors i take it these are under the dash at the steering colum?

neil

[neill54]

another update: got a code reading of 22 so its a new knock sensor so its not that bad i suppose just need to find where it is and get one fitted!!

neil

[sKunk]

Good work

[Carson]

Get the sensor, fit it! ~ new one, not ebay

reset ur ecu if u know how

see if its all good in the hood

[neill54]

i can maybe manage the ecu reset locate and fit the sensor but what i would like to know is what is knock and how has the engine decided to feck this sensor?

neil

[AlanG]

knock is detonation within the engine and is detected by a sensor on top of the engine. This then tells the ecu to retard the ignition timing to alleviate detonation.

*Most likely* it's not the sensor itself but *probably* the connector to the sensor. Have a look there first before buying another sensor and check the resistance of the sensor to see if it is faulty.

[neill54]

cheers alan im just on the way out the door to get working on it

neil