Should I replace PHH? Take a look at current one
- Thread starter mreedbmwm3
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I have heard they rot from the inside out.
LS1FJ40
SILVER Star
Yes. It is original. Much easier to do in your driveway/garage then on the side of the road or on a trail.
Do not use silicone hose. It weeps. You’ll have to do it again.
Do not use silicone hose. It weeps. You’ll have to do it again.
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Cool just ordered one from Wits End, thanks Guys!
ppc
M Go Blue
The hose looks like OEM and in relatively good shape actually. The abrasions on the metal tube makes me think it may have been previously replaced using the Toyota/Lexus part, possibly at a dealer. Have you retrieved the repair history from Lexus by registering your VIN at Lexus Owners Site | Lexus Drivers ? That would tell you a lot.
Come on just drive around with it, in the console until it burst, live a little 
ewillis
SILVER Star
Looks pretty good, but it needs changed on principle alone. You may as well get after your heater valve while you're at it...
Pesky
Heater
Hose
It's the small rubber hose that is connects to the engine and the metal hose in the photo. It is thusly named because it's a bit of a pain to replace.
The PHH is a Catch-22. You can't really tell if you need to replace it until you destroy it taking it off - forcing you to replace it (unless you're standing on the side of the road with coolant pooling by your feet). Mine looked pretty bad when I asked the same question years ago and when I took it off and cut it open, it was perfectly fine.
The primary reason to proactively replace it is to be able to do this pesky job in the comfort of your own home at a time of your choosing - not on the side of the road (or trail) at the worst possible moment.
The primary reason to proactively replace it is to be able to do this pesky job in the comfort of your own home at a time of your choosing - not on the side of the road (or trail) at the worst possible moment.
You don't see the PHH, it sees you.
Any original PHH needs to be replaced at this point, along with thermostat, heater control valve, radiator cap, fuel pump relay, COR and EFI relays. IMHO. Why wait? Are you going to sell your truck in the next year? If not, replace these items.
Still have my original and it doesn't look that good. Replaced other coolant hoses and heater valve. Heater valve was intact and still solid but crumbling bits from the inside out. Toyota coolant hoses are fairly robust.
Looks stock...swap it out
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That looks nice, most likely has been changed.
LINUS
Waiting for the Great Pumpkin
While you're in there at that spot, a new fuel filter is a no-brainer too.
You do want to 'slot' one of the bolt/mount holes on the 'wings' - you'll see why removing yours.
You'll be right there with the wheel off & working thru that wheelwell skirting, so it makes for a synergistic setup to pull hose, pull filter & renew, then new PHH.
My $.02
You do want to 'slot' one of the bolt/mount holes on the 'wings' - you'll see why removing yours.
You'll be right there with the wheel off & working thru that wheelwell skirting, so it makes for a synergistic setup to pull hose, pull filter & renew, then new PHH.
My $.02
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LINUS
Waiting for the Great Pumpkin
Agree it looks nice, but did dealerships (benefit of doubt) do those band clamps?
And as nice as it looks, it's a clean motor all around - I'm skeptical on it being a refreshed part. IDK, I don't see 80's in #'s like you do Kev.
ewillis
SILVER Star
The principle in that the truck is 20 years old, has what appears to be an original PHH, and owner is unsure if it has been replacedWhat "principle" would that be?
