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#1
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Why you should change your knock sensors
I attached 2 pics (one for each sensor)
After replacing the sensors and cleaning the throttlebody with Mercury Powertune my car idles smoother, a little higher (800rpm) and doesn't try to stall when I push in the clutch while decelerating. One of the sensors was modified for dramatic effect
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#2
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Explain what's wrong with them for us non-mechanical people.
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[/COLOR][/COLOR]-Scott My Locker 2014 Grey Ford Fusion 2.0 EcoBoost Bought: 12-5-14 2005 Silver Legacy GT Ltd 5mt. Bought: 3-3-07 Sold: 12-5-14 1996 Brilliant Red L (AWD). Bought: 6-14-04 - Sold: 3-3-07 - 15.370 @ 89.65 1992 Claret/black LS #4086 (GF's). Bought: 6-30-04 - Sold: 7-29-07 1994 Pearl White LSi Bought: 2001? Sold: 2004? |
#3
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Sounds like this should be one of my summer projects. :-)
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#4
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Well the housings are both cracked and I figure they were reporting false knock symptoms and unnecessarily retarding the timing.
Changing is not exactly easy without removing the intake but it is possible and it really helps to have 2 people especially when changing the driver's side sensor. Without removing the intake expect to take about an hour to change both sensors. This includes removing/replacing the alternator.
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
#5
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Knock, Knock
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. Earl .... ... .... ><SVX(*> Subaru Ambassador [COLOR=”silver”]1992 Tri Color L[/COLOR] ~45K (06/91) #2430 1992 Dark Teal LS-L ~184K (05/91) #0739 1992 Claret LS-L ~196K (05/91) #0831 1992 Pearl LS-L ~103K (06/91) #1680 1992 Pearl LS-L ~151K (06/91) #2229 1992 Dark Teal LS ~150K (07/91) #3098 (parts car) 1992 White LS-L ~139K (08/92) #6913 1993 25th AE ~98K (02/93) #164 1993 25th AE ~58K (02/93) #176 1993 25th AE ~107K (02/93) #215 1993 25th AE ~162K (02/93) #223 1994 Laguna Blue Pearl LSi ~124K (1/94) #2408 1994 Laguna Blue Pearl LSi ~144K (10/93) #1484 1994 Laguna Blue Pearl LSi ~68K (10/93) #1525 1994 Barcelona Red LSi ~46K (02/94) #2624 1994 Pearl LSi ~41K (12/93) #1961 1995 Bordeaux Pearl LSi ~70K (02/95) #855 1996 Polo Green LSi ~95K (03/96) #872 1997 Bordeaux Pearl LSi ~55K (08/96) #097 2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951 1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420 My Email | Old Locker | New Locker | Picture of 15 of the 19 |
#6
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Who's there?
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"The things you own end up owning you. It's only after you lose everything that you're free to do anything." 92 Pearl White Ls-l (138k) Euro Headlights & Blinkers, 97 Grill, Euro Tail Lights, SS Brake Lines, Stebro Exhaust, Slotted Rotors, Classic Registration 96 Legacy Outback (206k) 5-speed 2.2 Lightweight Crank Pulley, Group N Trans & Motor Mounts SOLD Wanted: Steering Wheel |
#7
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detonation!
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#8
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Detonation who?
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Dave - 03 Baja - 92 SVX - 86 Brat - 08 OB 3.0 |
#10
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I suppose I should try again. I tried to no avail once before, but the only thing that was accomplished were bloody knuckles.
Did you remove the AC compressor to do the job? How did you get your hands in there to route the wire on the drivers side? I was able to remove the drivers side sensor, but couldn't get my hands in the right place to disconnect the old and connect the new. Anyone want to help next weekend?
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Collin 1995 L AWD Locker 1987 Porsche 944 turbo 80k miles. MBC + Chips. Relatively Stock |
#11
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If you drive up to CL, i'll help you out.. haha yeah i'm working on the eclipse, and going to try to change my spark plugs this weekend... We'll see how well that goes.
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Greg 97 Red SVX LSi clean 96 Black SVX LSi beater 90 Red Eclipse GSX track ho 99 Ford F250 work horse My Locker |
#13
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Both of my sensors were cracked just like the two in the pics.
It's pretty tough to get the wire for the driver's side sensor back to the connector. I had to get on the passenger's side, reach in at an odd angle, and do everything blind. One advantage of being 6'5" is that it's almost easier to reach to the DS from the PS than it is from the DS just because I can stretch out over the engine a bit more and relieve low back stress. Anyway, to get the DS sensor installed I put the bolt through the center of the sensor while I still had it out. I then, more or less, jammed my right hand w/sensor back under the intake while using my fingertips to route the connector to just about the right spot at the back of the manifold. I then moved to the back of the intake manifold to pull the connector from the new sensor through to the connector from the wiring harness (done blind, again...just have to feel for the connector) and get it hooked up. Once that was done, I went under the intake with a ratcheting 12mm wrench(PRICELESS for this work!!) and put the ratcheting end over the still loose hex head. I used the wrench to "grab" the bolt and sensor and twist and turn them until they were properly aligned with the hole. Then I had to stuff enough of my left hand in under the manifold to hold the sensor in place while the right hand slowly (1 or 2 clicks at a time) ratcheted the bolt (simultaneously crushing the bones in my left hand). Once the bolt got started, I took out the (crushed and mangled )left hand and just continued to ratchet until almost tight. Then I aligned the sensor in the same position as the original and tightened. It's definitely not a quick job if you have big hands. Collin, if I remember, you have some BIG hands. Best of luck to ya! Just be patient when trying to use the bolt head to position the assembly. If the bolt comes out of the center of the sensor then you have to take the sensor out and start over, or you have to get the bolt back through the sesor in those confined spaces (I had to do this 2 or 3 times). Hope I've helped. If you have questions, gimme a call. Mat
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Time for my very own long list of mods: 92 SVX LS-L - Ebony Pearl - 2002 WRX 5MT trans w/STi gearset (rebuilt & installed myself ) - BMW E46 HID retrofit - Kenwood Headunit - Phoenix Gold 75x4 RMS amp - Alpine Type R 6.5" front components - Alpine Type R 6x9 3way rear speakers - 18"x9" Rota G-Force wheels w/225/40ZR18 Toyo T1R's - Mychailo's custom springs - Urethane front & rear sway bar bushings - KC exhaust (2.5" dual magnaflow) - Escaine seat swap - Removed Spoiler I don't care if Subaru says it's STI...it will always be STi to me |
#14
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Thanks for the advice Mat. If I can't get it again next weekend, you might be getting a phone call....
My fat bear paws are definitely not the best for tight places. Worst comes to worst, I will be in the market for some intake manifold gaskets.
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Collin 1995 L AWD Locker 1987 Porsche 944 turbo 80k miles. MBC + Chips. Relatively Stock |
#15
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We did not remove the A/C compresser when we changed the sensors. As for routing the wire for the driver side sensor we wrapped it with haywire and it was easy. The hardest part would have been lining up the bolt on that same sensor.
We did use a ratcheting wrench as well. The longer the wrench the better. In fact we taped another wrench to that wrench to give us the extra length we needed.
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
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