01 ES300 Knock Sensor

Reply Subscribe

Thread Tools

Search this Thread

02-03-15, 03:55 PM

ViPeRs103

Driver

Thread Starter

Join Date: Jul 2010

Location: FL

Posts: 117

Likes: 0

Received 0 Likes on 0 Posts

01 ES300 Knock Sensor

Good evening folks, I currently have an 01 ES300 with original knock sensors NO CODE OR CHECK Engine Light and noticing somewhat bad fuel mileage... Can knock sensors become weak at high mileage on these cars!!? So much stuff has been replaced on this vehicle its ridiculous! Any input would be much appreciative!!

And would it be necessary to replace the sensors even if no code is present in ECM.?

Reply Like

02-04-15, 12:43 AM

OceanView

Lead Lap

Join Date: Jan 2005

Posts: 468

Likes: 0

Received 7 Likes on 5 Posts

How many miles do you have and what kind of mpg are you getting now vs before?

Reply Like

02-04-15, 04:37 AM

ViPeRs103

Driver

Thread Starter

Join Date: Jul 2010

Location: FL

Posts: 117

Likes: 0

Received 0 Likes on 0 Posts

131,000 on the original parts and not quite sure to be honest with you.

Reply Like

02-04-15, 09:12 AM

tomf

Lead Lap

Join Date: Feb 2010

Location: Nebraska

Posts: 544

Likes: 0

Received 21 Likes on 20 Posts

Winter blend fuel can cause bad gas mileage.

Reply Like

02-04-15, 09:49 AM

lostape45

Advanced

Join Date: Aug 2013

Location: OH

Posts: 500

Likes: 43

Received 30 Likes on 15 Posts

My theory is "Don't fix what isn't broken." The knock sensors on these cars are extremely sensitive and if you don't replace them with OEM, they are unlikely to work properly. I wouldn't touch them unless your car is knocking.

That being said follow this thread here for some help getting your mileage back:
https://www.clublexus.com/forums/es3...s-mileage.html