knock sensor plug

hardcore_cobra · Jul 12, 2009

Have a 90 Turbo. Somehow the plug on the harness for the knock sensor got pulled off the wire. I would have soldered it back on, or something, but now the plug has disappeared into the depths of my garage somewhere too. Can you get a plug? Eliminate the knock sensors? Will it just work with one knock sensor?

87 supra t · Jul 12, 2009

its gonna run like ass with only one knock sensor. if i remember correctly you should be able to buy a replacement knock sensor plug from toyota, and it comes with a 6in. piece of wire for you to solder to the harness

hardcore_cobra · Jul 12, 2009

Damnit. Okay, well... that's not as bad as it could have been I guess. I just deleted the knock sensors from the tune on my Cobra.

aaronc222 · Jul 13, 2009

Toyota part # 82219-89103

It will run in 'fail safe' mode until it's fixed (Code 52). This means pulled timing and extra rich.

smokeshark · Jul 13, 2009

i also need help i want to replace both knock sensors and napa can only get one and they wanted 330$ for it so any help is appreciated!

hardcore_cobra · Jul 14, 2009

aaronc222 said:
Toyota part # 82219-89103

It will run in 'fail safe' mode until it's fixed (Code 52). This means pulled timing and extra rich.

Dude, you're gettin a big non-**** man hug. I fought with the Toyota dealer today for two hours while they tried to sell me all kinds of wrong shit. Then, they tried to tell me the only way to get the plug was to buy the whole knock sensor for $250. They even made calls to double check and called me back.

SupraOfDoom · Jul 14, 2009

They charge $250 for a knock sensor? Seriously? I just bought Shaeff's knock sensor re-wiring kit hopefully I don't need an entire knock sensor ( mine was off ).

hardcore_cobra · Jul 15, 2009

They had it in stock for $13. Cut the other end off the thing and soldered it into the harness today. Hopefully I'll get the rest of it back together tonight. Thanks!

87 supra t · Jul 15, 2009

smokeshark said:
i also need help i want to replace both knock sensors and napa can only get one and they wanted 330$ for it so any help is appreciated!

i got mine from advance auto for $196 and some change. and just order 2. there the exact same. gl

aaronc222 · Jul 15, 2009

Toyota Knock Sensor - 89615-30020

And don't use the NAPA/Autozone/crap ones when Jay Marks/Champion (one of this sites 'vendors') sells the thing for $160.76.

OEM for $160.76 vs China crap from Autozone for $196. You do the math.

http://www.trademotion.com/partlocator/index.cfm?siteid=213747

BTW, always try the rewire first as that's it 90% of the time.

hardcore_cobra · Jul 16, 2009

Okay, I hadn't heard anything about this "re-wire" until tonight. Essentially, I got the plug, cut off the obvious end, and soldered it onto the bare wire from where the old plug was. It still runs like shit and still throws a code 52. I started reading and found these re-wire instructions. What I didn't find is why? What are the issues? Why won't what I did work? Thanks

adidas00 · Jul 16, 2009

should have ran to a local junkyard and pick one up for about $15-$30. And knock sensor from the older 4 Runner and cressida and 7mge all work the same. And if the code still come on, guess you have to run two wires straight to the ecu......

adidas00 · Jul 16, 2009

the knock sensors wires are pretty cheap, and sensitive. My did the same thing so me and my buddy had to run wires from the knock sensor straight to the ecu. The code went away and now the car runs great.

hardcore_cobra said:
Okay, I hadn't heard anything about this "re-wire" until tonight. Essentially, I got the plug, cut off the obvious end, and soldered it onto the bare wire from where the old plug was. It still runs like shit and still throws a code 52. I started reading and found these re-wire instructions. What I didn't find is why? What are the issues? Why won't what I did work? Thanks

reydio · Jul 16, 2009

Hope this can help......

http://www.phoenixtuning.com/zenstore/index.php?main_page=index&cPath=867_868&sort=20a&page=3

aaronc222 · Jul 16, 2009

http://oldschool.supracentral.com/htm/knock.htm

Basically just 20+ year old wiring. Like the starter rewire, replacing grounds, CPS rewire...

I just grabbed a spool of 14g twisted pair shielded from RadioShack for $10 and the new plugs from Toyota (and then had to order a sensor because the rear one had cracked).

hardcore_cobra · Jul 16, 2009

Does anyone know if they're saying to use RG-58 just because it's shielded? If you used shielded TP I think I'd rather do that since I've already got about 5000 ft of it. We haven't used RG-58 in years.

hardcore_cobra · Jul 17, 2009

Eh, so bet you guys can't guess what I'm doing tonight.... lol

hardcore_cobra · Jul 17, 2009

Or maybe not. It seems the RG-58 I picked up was solid core. I think the stranded is actually RG-58 A/U or C/U. I can't remember now, it's been 15 years since I've used thin-net. Anyone know if I can use the solid core stuff? If not, I guess I have to wait.

87 supra t · Jul 17, 2009

just out of curiousity after you replaced the knock sensor(s) did u pull the 15amp efi fuse to delete the stored code??

aaronc222 · Jul 17, 2009

hardcore_cobra said:
Does anyone know if they're saying to use RG-58 just because it's shielded? If you used shielded TP I think I'd rather do that since I've already got about 5000 ft of it. We haven't used RG-58 in years.

If you've got shielded TP with a jacket that will stand up to engine bay temps than go for it.

knock sensor plug

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