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06-16-2008, 04:02 PM
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Master Member
 
Join Date: Apr 2008
Location: NE OhighO summer, Lower AL winter
Posts: 2,703
1997 SL
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Knock sensor
I was leafing through my Haynes book.... does my 1997 have a knock sensor? Would you really test it by connecting a timing light (I have one
 ) and tapping on the "air plenum"? In the area of the starter (backside of the engine) there are several "sensors". One is CPS, I know that one I assume another is oil pressure? And the others???? ... 97 SL. Born 6/5/97. Bought 7/7/97, still rolling 08 Burgman 400- the Burgman grin! 02 Haro MTB The Schofield Kid: Yeah, well, I guess they had it coming. Will Munny: We all got it coming, kid.
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06-16-2008, 04:11 PM
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Senior Member
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Re: Knock sensor
This photo of sensor locations iis from Wolfman's gallery.
http://www.saturnfans.com/photos/sho...65/ppuser/3528 ... 97 SW2 5-Sp 261k -mine 98 SL2 5-Sp 140k - wife's 02 SC2 5-Sp 67k - best friend's 05 ION2 5-Sp 125k - step daughter's
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06-16-2008, 06:05 PM
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Master Member
Join Date: Apr 2008
Location: NE OhighO summer, Lower AL winter
Posts: 2,703
1997 SL
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Re: Knock sensor
Good grief, Charlie Brown, what's a "CCPS"?
Thanks- great photo!  ... 97 SL. Born 6/5/97. Bought 7/7/97, still rolling 08 Burgman 400- the Burgman grin! 02 Haro MTB The Schofield Kid: Yeah, well, I guess they had it coming. Will Munny: We all got it coming, kid.
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06-16-2008, 06:32 PM
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#4 | ||||
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Super Member
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Re: Knock sensor
Charcoal Canister Purge Solenoid. Knock sensor test: Start motor an allow to idle till warm. Take a nice thin wood rod and tap on the knock sensor several times rapidly. If engine goes nuts then it is working. You do not have to hit it very hard. You can get at it from between the intake runners. Usually if you tap the block next to it with a long screw driver you get the same result.
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06-16-2008, 08:39 PM
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Advanced Member
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Re: Knock sensor
my electrical class was talking about knock sensors last week. it's kinda interesting how they work by compression of crystals sending off electric signals. Kind of like the needle on a record player
... I have not failed, I've just found 10,000 ways that don't work. Polymer madness 2000 SL 5 spd. Bought: 04/05/05 with 57k Sold: 06/17/10 with 146k
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06-16-2008, 10:26 PM
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Super Member
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Re: Knock sensor
Exactly.
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08-05-2008, 11:38 AM
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Junior Member
Join Date: Apr 2005
Posts: 20
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Re: Knock sensor
I get code 43 on my 95 SC2 ses light. Knock sensor code. The car idles a bit rough, and occasionally feels like it is going to stall, but doesn't.
It runs pretty strong other than that. does this sound like knock sensor failure symptoms? I have recenlty replaced the Ox sensor and the ects, as well as plugs, cleaned the throttle body and so on. Thanks
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