On a 2002 XKR, where is the knock sensor wiring connected to the main harness ? If anyone could post a photo, or even a detailed description of the location I’d be very grateful. I know both knock sensors have wiring that terminates in the front of the engine, But that’s too vague to be helpful. there are numerous wiring connectors is that general area and I’m loathe to mess with anymore of the ancient plastic than I have to.

I’m needing to test the bank #2 knock sensor and associated wiring (bank #2 is driver side for USA cars I believe?).

Z

 

Z, I can only give you the location of the XK, and it might be the same.
There is a clip on each side of the thermostat housing that holds the connection and plug to the sensors.
Wires run under the intake.

 

^^^
Same on the 4.2L R.

The connectors are more or less directly in front of the intercoolers at the left and right sides of the supercharger. These be the only two wires that run down under the supercharger as the sensors are bolted to the block near the middle

 

This is the left Bank Connecter Knock Sensor Connector

 

Thank you!!! I deduced that last night, it it’s great to have the confirmation.

Z

 

Z.....,

One day the light came-on and told me my Left Bank Knock Sensor was out. Another time the Light told me that my Knock Sensors were out and shut the darn thing down....I don't know where it comes from but they seem to gather OIL....and Oil is a great electric conductor.....Both times I cleaned the connections and all things were OK after that! I really don't see where they get the OIL from......Nothing is leaking anywhere..........

Billy Clyde

 

once I was reasonably sure I had the right connector I pulled the two halves apart and gave both ends a good dose of CRC electronic cleaner. I never felt they were oil covered, but as even a small oil leak under the hood puts those oil vapors everywhere, just as you say. I gave the cleaning the old college try. No luck. The 0333 code was back pretty quickly. I have a replacement K/S coming soon, fingers crossed.


Z

 

Sorry that didn't work! Hope you don't have to go under the Blower!

BCP

 

I’ve been PM’ing a forum member who also had an XKR with knock sensor issues. They tried a novel approach to avoid the supercharger removal. They just plugged in a replacement knock sensor and , “laid it on top of the engine...”. WOW ! and reported that their restricted performance light went away permanently.

I’m not recommending that type of fix to anyone reading this, but I’m going to give it a try before tackling the supercharger removal.

when my valley hoses give up and I absolutely have to take the supercharger off, that would be the time to bolt in the knock sensor properly. I use top tier 92 and / or 93 octane gasoline, I’m not too concerned about engine knock at this time.


Z

 

It is not as bad as it sounds to take the supercharger out. Most annoying part IMO is draining the cooling system but with the bonnet in the service position it is not awful to do the rest.

Personally I would get the sensor and the valley hoses and any other maintenance bits that might be due and just buckle down and do it all on some weekend. You will have it all back together and running again before Sunday dinner, even on the first time doing the job.

 

No argument with that. I know you are right.

Right now I’m in a bad place physically:
Circa 1978, one 1978 Kawasaki 1000 Police Special + 89 mph + analyzing cause of high speed wobble =
3 broken vertebrae, 3 ruptured discs, 40+ years and several unsuccessful surgeries and procedures later, I’m a physical mess. Bending over a fender for a few hours is just not in the picture for the foreseeable future. Just Changing the spark plugs this week had to be in two sessions.

but I still can drive, and for that I’ll call myself very fortunate indeed.




Z