Coolant Hose or ? (1 Viewer)

[txtortoise]

My FJZ80 was kind enough to wait until I got home tonight to dump coolant all over the driveway. I'm pretty sure it's a hose, but it high up on the left side of the block behind other stuff so I'm not sure which one. I think the leak is higher than the PHH, but won't know until I can get some time and daylight to confirm which hose failed.

That said, I need to ask a dumb question....Given that I've got coolant all over the ground is it definitely a hose or is that also a characteristic of a head gasket failure or something else? The leak sounded and sprayed coolant like it was a punctured hose, i.e., fine mist going everywhere. The location is what has me nervous, but wasn't sure what leaks when the head gasket fails...or what else happens at that point.


PHH replaced at 60K by Robbie at Slee. Other more accessible radiator hoses previously replaced, but apparently not this one. 107K on the truck with no other issues.

Thanks, Ralph...

 

[OGBeno]

Is it the DS or the PS on the US model? Trying to figure out what Left side you are talking about.

During replacement of my PHH, I did do some tinkering to the heater hose valve against the firewall in the back...I'm not anywhere close to being as skilled as Robbie who I recall did his on the side of the road!! ...anyway, I nicked the heater hose going down into the metal pipe that leads to the PHH and I had a small leak that I didn't even know about because it burned off immediately after spraying.

I finally noticed the hole when I replaced all of the hoses in the rig--including that rear heater hose.


If you look at the picture, #61 (connected to #69 going into #36--lower right area of pic.) is the PHH and #62 was the one I busted. It could be any of these really if the fluid is coming from the rear. (pic borrowed from SOR).

Good luck.
-onur
Akron, OH

 

[CJF]

Nah, it's not a head gasket. Sleep tight tonight, check it out tomorrow, and let us know what you are or aren't able to find out.

CJF

 

[Jim_Chow]

Is it leaking when the engine is cold (before driving 8 miles) or hot or all the time? My guess is a hose...no way a HG could spill that much coolant, from what you describe.

I had a recent hose leak in a 22re that had my mystified. It would only leak when cold, so whenever I checked it after arriving at work/home (20 miles one way), there were no leaks, yet the coolant bottle level would gradually lower (bottle would essentially go dry after one week). Finally, while gassing up at a station in the middle of nowhere (NE AZ) on a cold engine, I saw coolant leaking about 2 drops/sec (kind of serious, I thought, considering I was far from home and it was sunday [every shop closed in the small town]). In my case, the coolant was dripping from a hose into the alternator. The fan would blow the stuff all over the place (mostly over the plastic cover over the steering U-joint). Turns out, when the engine is cold, the system is under more pressure since the radiator cap valve has yet to open. Once it opens, the pressure is relieved and the expanded coolant spills into the bottle.

 

[txtortoise]

Driver side leak. Thanks for the feedback, more to share once I get in there.



Thanks, Ralph...[/QUOTE]

 

[CruisinGA]

Could be the rear throttle body coolant hose.
(Hits the block just a little fore of the PHH)

 

[txtortoise]

FWIW, it looks to be #61 connected to #24 in the above diagram. I never did find the diagram in the manual(I assume SOR copied it). Pain to get to, but better than the PHH. Glad it didn't happen on the trail, given my meager mechanic skills.

I loosened #61, then I took off the top hose and dropped the assembly out the bottom to replace #61. I've got a number of spare hoses I ordered a while back, but none look to be quite the same. It looks like simple hose, but guess I'll get an exact replacement at Toyota tomorrow, since I need coolant now.

It had (really nice) screw clamps holding it on, instead of the OEM scissor style. Any idea if that is OEM or has it been changed before?

Any suggestions putting it back on, other than just reversing what I did? I plan to just refill with coolant/distilled water, until I can change it all out shortly.

 

[txtortoise]

Well, as long as I'm asking...

I've got the following spare hose parts, courtesy of John Hocker, when I said just send spares. . If anyone knows parts numbers I'd be interested in knowing if they match the bad hose, since the above diagram references #61 for various hoses...all short and straight.

A. 87245-60350 This is about the right length, but slight curved. I don't plan on using it.
B. 99556-30100 (A36-09-H2) - These are a four pack, look to be the right diameter, but definitely too long. Could these be generic cuts to be cut to size for the various short hoses?

 

[OGBeno]

Isn't #61 into #24 the PHH??

At least that is where my PHH was when I replaced it...

Maybe I have the wrong one!!

Thanks for the update.
-o-

 

[IdahoDoug]

Um, there are three #61's in that diagram, and two of them connect to #24. So, no real help in ID ing what you're doing...

DougM

 

[flintknapper]

Wipe up or wash off that coolant, before somebody's dog or cat finds it.

 

[txtortoise]

First thing I did was wash down the coolant.

Doug, I only see one #61 going into #24, lower right corner,...which is why I think all these are the same short straight hose..at least from a parts standpoint.

 

[Rich]

That is what is called the pesky heater hose. It is just a straight section of hose. You would be better off replacing with something better than stock Toyota hose, so that it will last longer. With two screw hose clamps, yours had already been replaced once. 47k wasn't very many miles to have your replacement fail.

I am fond of Gates Green Stripe heater hose. It is much more robust than the Toyota hose. Can be hard to find. Carquest carries Gates hoses but all stores may not stock the Green Stripe. Can also be found at hydrualic fitting shops, and repair shops that work on big rig diesels, where it is commonly used.

 

[txtortoise]

Yup, I'm an idiot. After re-reading the archives and visiting Christo's site again, I realize now that it's the PHH. It was just reletively easy to get to, once I figured it out, I didn't think it was the PHH.

Also explains why I have the nice clamps on no middle bolt on the heater pipe. Robbie did the job at 60K, which made it easier for me this time. It must take a beating, since that's 'only' 47K on the hose...but it does live in Texas.

I may try the Green Stripe since I don't want to try and search for the other clamps needed for silicon.

 

[OGBeno]

Phew...I'm glad Rich cleared that up because I was ready to take apart everything to make sure I got the 'real' PHH.

You can also get real nice green silicone hose from NAPA along with constant torque clamps to put on the sucker. Works real well. I got a length from Rook2 and slapped it on a few days later...haven't looked back!

Best.
-onur
Akron, OH

 

[landtank]

I'd suspecet that Robbie left out a bolt or two if you easily dropped that down pipe (24) out of your truck. Might also be why you had problems with it so soon after it was replaced. That pipe vibrating freely might cause problems. There are 2 bolts that hold that pipe secure. One on the top of the engine with the head on the PS, and one on the rear of the head with the head on the firewall side. The latter one is usually near impossible to remove for people.

 

[txtortoise]

"one on the rear of the head with the head on the firewall side"

That's the one that wasn't bolted in. I don't want to experience trying to change the PHH without removing the pipe. Guess I'll check it in another 40K.