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Knock Sensor Purchase? 2-Prong or 1?

5 messages,  Last post on Nov 05, 2011 at 9:24 PM

You are in the Subaru Legacy & Outback Forum.

What is this discussion about? Subaru Legacy, Sedan, Wagon

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#1 of 5 Knock Sensor Purchase? 2-Prong or 1? by queenofdorkdom

Sep 21, 2011 (10:11 am)

Hi there,
 
My CEL came on recently, took into the dealer who said that no code was thrown back. But then charged me $1,500 for other repairs that were needed. Fine. Paid all that, then the light came back on. Turns out it was the knock sensor all along. Rather than fork out another $300 or so, I thought I'd replace it myself. Looks pretty standard. However, for the life of me, I can't figure out whether I need to buy a 1- or 2-prong replacement part. I'm confused as to why there is an option...so I thought I'd refer to the forum, since you're always so helpful
 
I have a '97 Subaru Legacy L.
 
Thanks in advance!

#2 of 5 Re: Knock Sensor Purchase? 2-Prong or 1? [queenofdorkdom] by xwesx

Sep 21, 2011 (1:46 pm)

Replying to: queenofdorkdom (Sep 21, 2011 10:11 am)
Does yours have the 2.5L engine? The 2.2L was eliminated as an option on the Outback in 1997, but I don't recall if the same is true for the Legacy that year.
 
If it is the 2.5L, I'm fairly certain it is a single prong.
 
I have some photos of the rebuild I did on my '96 2.5L, and that one is single. Getting to it is a bit of a pain, but other than that, it should be a simple replacement!

#3 of 5 Re: Knock Sensor Purchase? 2-Prong or 1? [xwesx] by queenofdorkdom

Sep 21, 2011 (3:48 pm)

Replying to: xwesx (Sep 21, 2011 1:46 pm)
Mine is a 2.2 Sedan.

#4 of 5 Re: Knock Sensor Purchase? 2-Prong or 1? [queenofdorkdom] by xwesx

Sep 22, 2011 (8:37 am)

Replying to: queenofdorkdom (Sep 21, 2011 3:48 pm)
Hah; it figures!
 
If you're buying locally, get them both, pull the old one out, replace it with the correct one, then take the other back. ?

#5 of 5 Re: Knock Sensor Purchase? 2-Prong or 1? [queenofdorkdom] by tewan

Nov 05, 2011 (9:24 pm)

Replying to: queenofdorkdom (Sep 21, 2011 10:11 am)
Kudos for this blog post. Highly engrossing and well penned post. Thanks!
 
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