It seems I need one again, and I have been looking at perhaps relocating them to a more accessible location. ? So I'm going to chalk this up to carboning and gunk in the combustion chamber, and the knock sensors were just not activated with the light knocking I was experiencing. Please or to join the conversation. Getting the old one out was hard even disconnecting the connector which involved squeezing the little tab while pulling apart but putting the new one in using just 2 fingers was exhausting. I used all kinds of tools to unscrew it and replace it. Better set some time aside for this. But I can't seem to find it on my engine! There are two knock sensors for the front and rear pistons banks.
Any idea which one is which? A bolt goes through the center of the knock sensor, which then mates the sensor to the block on each bank. This increases the displacement up to 3. When the cel is set, it's because there's no signal. Now attack the fuel intake and pull it around - it is held on by Torx T40 bolts and nuts. No Base to lose - Each can find the others - Expandable Use on Cell Phones - Keys - Wallets - Purses - Glasses - Remote Controls. Our Patented 2-Way Wireless Key Finders. They also use steel rings, smaller-diameter shot-peened rods, and a forged steel.
How to fix your Toyota Sienna Knock Sensor Malfunction P0330 P0335 without a second mortgage. Now I have to replace a busted radiator since it was overheating. I saw this topic while searching and had to put a reply The knock sensors on the 1mz engines are just stupid, they are over sensitive. I pieced together my answer there. They are notorious for really really sensitive knock sensors. What is the plan of action to fix this problem? Do theese cars go into some kind of fail safe mode? Nothing to break less a mechanic does it during repairs, or the sensor shorts out that falls under bad wiring. If there is continuity then the sensor is bad.
The Check Engine lamp came on. Are you the original owner? Also, whenever replacing an O2 sensor, because they are mounted in the exhaust, use the copper anti-siexe compound to prevent it from happening again. Without a Scangauge its impossible to know the engine operating temp but I would investigate that also. Thank you for ur reply lenore! Most common place it to put them is on the engine steady mount, or mount a block somewhere on the top of the timing belt area. It drives me insane losing overdrive every time I drive it. You are correct unless the timing is so far out its out of retard parameter. It's not what I would recommend someone doing it themselves - because it was quite a struggle to physically get access to the O2 sensor unit.
Thought it was carbon at first, but a few applications of Techron didn't clear it. So - the sensor was almost fused tightly together in the socket. It's either a knock sensor, the wiring harness, or problem going from the connector to the computer. You use standard octane fuel it will ping. This can cause a buildup of oil sludge when can be detrimental to your engine.
Thanks for the reply fidgits - I actually have an update on this quest for the 02 sensor. Next start by removing the wipers, then the whole wiper box and grills as usual! I think one was closest to driver side. Jan 21, 2014 Hi, Improve the Fixya. While you are at it, there is a short coolant bypass hose sitting in the same spot, replace it. By then I was using 98 octane fuel for a few days and the light went away. . We bear no responsibility if you or anyone else gets hurt physically or monetarily following any advice or information offered here or any other page we host.
Now I have to replace a busted radiator since it was overheating. We have had this car for 7 years with absolutely no issues at all so this is the first time I have had to research anything for it. Dec 05, 2015 Why would you want to? It has bucket tappets and was designed for good fuel economy without an overall performance trade-off. So if both of them have the + it reduces the threads that only have 1 of the 2 or more words. Too bad I didn't keep them, else I'd take some pictures. Part of this issue also comes up from regular oil change intervals being ignored. How to fix your Toyota Sienna Oxygen Sensor Malfunction P0420 P04305 - Catalyst Not working.
The cylinders are lined with cast iron, and is of a closed deck design no open space between the bores. I'm bypassing it because I'm pretty sure it's faulty and not detecting any knock. Liquid Wrench was just the trick! Don't forget the 3 ground lines - 2 in front and 1 in rear. Installed sensors to 33 ft. If you plan to do this yourself it is about 1 to 2 hours. I can only see it by standing on the driver side and peering into the lower back side between the engine and firewall of the engine.
I connected them to an oscilloscope and started tapping on them, they are essentially microphones after all The 2 sensor gave a totally different waveform than the 1 sensor and the replacement. Engine coolant is about 40k old, inverter coolant about 20k. It was suggested that as long as there was competent signal coming from some knock sensor, the computer would act normal. This engine has been phased out in most markets, replaced by variants of the new series. Its pretty easy to check.
Better connect all these back too. It was pinging when I bought it due to stale fuel. Anyways - I hope someone else will find this experience useful. You should run your tank of gas low 18. Hasnt pinged since and drives rather well until it randomly goes into knock fault. What's the proper way to diagnose the knock sensor on a Prius? Over time, carbon builds up on top of the piston. You make a great point Neil.