I just pulled my engine cover off, as I'm having the dealer change my heater Ts tomorrow. I noticed a mangled looking hose near the front top of engine, under the dust cover. Is this the pcv house?
How often? PCV valve and thermostat replacement
- Thread starter SWUtah
- Start date
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There is a picture in this thread, it's to the left of the fill tube and above the dip stick:
Diagnosing Grease on Valve Covers
It should have a foamy, rubbery cover on the hose, maybe that looks mangled? Otherwise I'd imagine leaks in the hose causing a rough idle, audible vacuum leak.
2001LC
SILVER Star
Actually these PCV rarely go bad. They just need cleaning with solvent about every ~30k miles. Even less frequent if oil changed regularly with synthetic.
On the other hand; PCV hose on both DS and PS do go bad, causing vacuum leaks. These are one of the few hoses I've found bad on the 100's.
On the other hand; PCV hose on both DS and PS do go bad, causing vacuum leaks. These are one of the few hoses I've found bad on the 100's.
That's the hose. I guess I'll be replacing thathe next.
Thermostats rarely go bad as well but when or if it does it could be costly. I usually change mine at coolant flush just because I take it out to flush the system (50k-60k for me on flushes) I also replace radiator cap at this time. Not sure how shops can flush properly without removing the thermostat. OEM on this one too please.
084runnerltd
SILVER Star
Anybody know the name of the hose or part number that connects to the PCV?
I just changed PCV and the hose is in terriable shape....been search for about 30min, can’t find that hose listed anywhere?!?
I just changed PCV and the hose is in terriable shape....been search for about 30min, can’t find that hose listed anywhere?!?
You can use any hose you want, it's nothing special other than molded to an exact fit. But any rubber hose will work just fine.
Toyota Land Cruiser PCV Hose - Guaranteed Genuine
Toyota Land Cruiser PCV Hose - Guaranteed Genuine
084runnerltd
SILVER Star
I've got a 2002 LX470, how on earth do you take off the grommet and PCV? I tried prying....the grommet cracked apart, I tried pulling, doesnt come out!
2001LC
SILVER Star
PCV valve will be hard to pull out. Pull hard by twisting and pulling.
The grommet gets old and hard. It will need to be broken in half and pulled out with pliers and picks. Work it out carefully so you don't drop pieces in head.
The grommet gets old and hard. It will need to be broken in half and pulled out with pliers and picks. Work it out carefully so you don't drop pieces in head.
Probably a stupid question, however what is the foam around the hose on the PCV valves purpose?
Another stupid question....what does Hundy stand for? See people refer to there 100's as a Hundy all the time...have searched on google to no avail.
Another stupid question....what does Hundy stand for? See people refer to there 100's as a Hundy all the time...have searched on google to no avail.
Dirt Ferguson
SILVER Star
It likes to be stroked, so over time it has developed an evolutionary adaptation of the supple foam outer layer.
Seriously though, it's most likely insulation to protect from engine heat and abrasion.I change my thermostat any time I do a full engine coolant flush and fill. They're cheap and easy to replace. And I originally come from the 80 series world where overheating can be a common and destructive problem.
Thanks mate....I've just given myself an uppercut...!
Stroked.....cheers for the info. Thought it maybe for heat but wasn't to sure as the foam isn't really that thick, on mine at least.It likes to be stroked, so over time it has developed an evolutionary adaptation of the supple foam outer layer.
I change my thermostat any time I do a full engine coolant flush and fill. They're cheap and easy to replace. And I originally come from the 80 series world where overheating can be a common and destructive problem.
2001LC
SILVER Star
Foam on PCV hoses, fitting and valve, are an insulator. It helps keep temp within constant from end to end, to reduce formation of condensation.
For those wanting to replace the PCV hose with the foam around it, make sure you get the right part #. The newer and older 100's model, the pipe dimensions are different.
