In investigating my Code 43, I think I have narrowed it down to the knock sensor, so I just ordered one today. I don't have my service manual with me (left it back in Michigan when I moved), so what I'm wondering is:

Is there any special magic to installing one? Is it like a temperature sensor where all the coolant will drain out if I pull it out?

I'm guessing that because I have a bad knock sensor, it is causing the ECM to alter the timing in such a way that it is causing my hesitation, heat problem, sluggishness and occasional backfire. I'm hoping that it at LEAST shuts the damn check engine light off.

Matt

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90 Wrangler with 305 TPI motor out of 92 Firebird Formula/ SM465 tranny/ Scout Dana44's on 35" BFG's

 

I just replaced my knock sensor on Sunday. It definitely fixed my hesitation problem and brought back a lot of lost power. Yes, the installation is straightforward, just like a temp sensor. It does thread into the water jacket in the block so coolant will drain out.

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1991 Z28 - 350 TPI, T56, McLeod street clutch, LT4 pressure plate, Pro 5.0 shifter, ported plenum & runners, AFPR, Holley Annihilator ignition box and wires, Hooker shorty headers w/o AIR, Flowmaster muffler, homeade ram-air, SSM subframe connectors, Kenny Brown STB, Global West steering box brace, Steve Spohn adjustable torque arm and T56 crossmember