2000 Forester L.
Code from "Check Engine Light" scanner indicates P0325 Knock Sensor Circuit Malfunction. Car runs well except for a little hesitation upon acceleration. A few questions:

1- Oddly, the Check Engine Light is off at the beginning of the day. The warning light comes on after a few initial blocks of driving. I thought that once you have a fault, it stayed on forever, until cleared by a scanner?

2- I had to apply a huge amount of pressure to loosen the knock sensor bolt, like I was going to break it. It finally came out fine. Is that normal?

3- I cleaned the contacts, hoping that would solve my fault code. Reinstalling the bolt, I applied anti-seize goop to the threads. As I don't know much about how the knock sensor exactly senses, is applying the goop OK?

4- After clearing the fault code with a scanner, the knock sensor fault code returned. Reading the post about knock sensor part numbers (dated 2 May 06), how do I find the appropriate part number for my 2000 Forester VIN JF1SF635XYH731460?

Thanks!
(Duplicate post in Forester forum)

 

Online, go to www.subaruparts.com, give them all the specific info of your inquiry such as your VIN #, model, model year and brief description of the part, in your case it's a knock sensor. Leave them an email addy and/or maybe your # for them to call you back.

If you want, you could also get in touch with Jamie (aka Subiegal), hopefully she'll be willing to help you out. Sorry, i don't quite remember the vendor that she works for nowadays, look it up at nabisco if you care to venture there. Hope this'll help you out with your ?, GL!