Hello everyone,
I just spent the last week going crazy trying to fix a "knock sensor" code P0330 on my RX300. So to save the next guy a little aggravation here is what I found out.
The dealer was trying to charge an "arm and a leg" to fix this problem (parts & labor). :cries:
Parts you are going to need:
1. Knock sensor
2. Knock sensor wiring harness
3. Intake gaskets
4. By-pass hose
5. Antifreeze
Lexus quoted me a price of $198.00 per sensor. (The car has 2 sensors, if you’re going to go through the trouble of changing them, change them both!)
After several hours of bothering the hell out of the parts guy at Lexus he told me that the part number for the knock sensor I needed was 896145-12040. I was able to order these from partsquick.com for $97.94 each. These are Genuine Toyota parts and were at my door in two days.
I ordered the intake gasket kit from rockauto.com for $56.79 this was a FEL-PRO part number MS92766 it came with all 3 gaskets.
I did order the wiring harness and by-pass hose from Lexus because I didn't have the energy to go through the whole mess again. They charged me $42.00 for the harness and $18.00 for the hose. When I got them I peeled back the Lexus sticker to reveal a Genuine Toyota sticker underneath! The Toyota part number for the wiring harness is 82219-07010 and the Toyota part number for the by-pass hose is 16261-20010. I’m sure with a little searching you can find this cheaper as well. Definitely order the by-pass hose because the hose is almost impossible to remove and I had to cut it off.
It took me 9 hours to change the knock sensors. It is not an easy job. You have to remove the whole top half of the engine.
I guess my best advice for anyone that’s going to tackle this project is to get a small 1/4" ratchet with a swivel head. I used this to get to the intake bracket mount bolts (2), as well as the ground bolt and fuel line bracket bolt that are located behind the intake, there’s not much room back there but this saved me tons of time.
Oh! and you might as well change the spark plugs cause they are breeze to change with half the engine missing.
Here are some pics of the whole ordeal. Hope this helps. Good Luck
Jason
knck sensor part number
wiring harness
by-pass hose
wiring harness part number
parts i had to remove!
engine with all parts out of the way
sensors and wiring harness with by-pass hose removed