Check engine light. please help

[94TurboLeg]

hey everyone! i have a 1994 ss and the check engine light comes on when i turn it on if the car is cold and when it rises to operating temp it turns off at idle but sometimes turns on while im driving. i trying using the green connector to red it and nothing came up so i tried to clear it but that didnt work either. does anyone know what this could be? please help.

[Legacy777]

Welcome to the BBS.

You should be using the black connectors only to check for stored codes in memory.

Instructions for pulling the codes are on my site

www.surrealmirage.com/subaru/engine.html

Let us know what you find.

[silver03]

+1...I printed out a copy and keep them near my workbench!

[94TurboLeg]

yeah thanks that will help alot. i will try it tonight and see what i come up with
thanks

[94TurboLeg]

okay so got the code read.

it was code 22. so the knock sensor.

i have a couple questions now.

can i replace that on my own or would i have to take it into a shop? and if i can on my own where would it be located??

[Legacy777]

Yes you should be able to replace it yourself.

If you look directly down at the engine block from where the throttle cable cams are, you should see it. It's a round black plastic thing about an inch in diameter with a cable coming up to a connector under the intake piping/throttle body. It's held onto the block by a 12 mm bolt. You should be able to just remove that bolt and pull it out. A magnetic wand or similar is helpful to get the bolt out.

You can see the knock sensor in this pic

http://main.experiencetherave.com/subar ... P_2481.JPG

[94TurboLeg]

okay. thanks lot.