amanda

hi. i have 90K miles on my 2000 es300. i just cleaned the IAC valve which took care of a starting problem.

but my gas milage is kind of low and the car is starting to consume about a quart every 1K miles so i thought i'd try cleaning/replacing the PCV valve which seems fairly straight forward.

but someone mentioned here that he also had to clean the OCV on his es300. so i am wondering if i should do the same but i can't figure out what problems i would see if the OCV needed replacing.

can someone clue me in?

also, if anyone can provide a link to a page where there are some instructions for replacing the OCV for the es300 (found one for the RX but seems different from the es parts) i'd appreciate it.

thanks, everybody!

hypervish

1 quart every 1k mile is excessive. Are you the original owner? How often was the oil changed? Sludge may be a concern in this case.

Hayk

iTrader: (1)

Not sure about sludge, could be a combustion chamber seal issue, but year 1 quart every 1000 miles is extreme.

amanda

i think it's the pcv valve. i am not the original owner but it was doing fine until about a year ago and it's accelerating consumption. it's had a change every 3K-5K miles (more frequent the first couple years) for the last 40K miles.

but what are some reasons i should clean/change the OCV? maybe i should do it about now anyway but i would like to understand.

JSM

OCV= oil control valve. It effects the timing of the motor and specifically how oil is feed into the VVTi. If its bad u will get CEL usually. Mine ran very ruff when they went bad.

I think your issue is something else with oil consumption.

PCV= positive crankcase ventilation. It could impact you having oil loss. Do you get any oil from the exhaust.

Hayk

iTrader: (1)

See if you have any external leaks. I can't imagine a 12 year old 90k mile ES to burn that much oil.

01LEXPL

iTrader: (10)

if its a PCV its a <5$ part from rockauto.

An OCV, the motor has two are about 70$ each aftermarket [i found someone on the 1st gen RX forums changing theirs out which shares the same motor as your ES300]

princwendt

could be a combustion chamber seal issue

lvaldez

How would you go about cleaning the ocv? What would be safe to use?