5vzfe hot at idle only, oddities

That lower hose is the cold coolant from the rad going back to the engine.


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Hah. I like you. Never assume someone knows the obvious.

But yes...I do know the lower radiator hose is the return hose and should be cooler...but not even warm?

-Mike
 
I'd vote new OEM radiator cap and new OEM thermostat (jiggle at 6 o'clock).

I have had too many aftermarket radiator caps not seal or not vent correctly to do anything but OEM there these days...

-Charlie

Thanks. I kept the old thermostat.

I ran the old girl for a couple of hours in traffic today and she didn't overheat. I can put my hand on the top of the radiator. It's hot but not crazy hot. So I guess it's working.

-Mike
 
Hah. I like you. Never assume someone knows the obvious.



But yes...I do know the lower radiator hose is the return hose and should be cooler...but not even warm?



-Mike



In 50 degree weather I had to block 3/4 of my rad just to get the engine temp above 191 to test a PID I created for my ScanGauge. And was driving at 50mph.
a05f04849d92df6f3e5d9b3186096620.jpg


If your rad is good I see no reason it’s not capable of reaching ambient temps on the return hose. I normally run 184-188.


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I'll post more when I have a few more minutes later, but I'm less than happy with Toyota (OEM) in getting a new radiator.

Had I known I wouldn't have bought OEM....
 
Alright, so... 1997 3.4, 4x4, manual.

I call Toyota and ask for price and availability. They give me a price and tell me Tuesday (last Friday). Price was lower than the Napa price for a Denso and only a few more dollars than the Napa brand.

I verify...

"This is for a manual, right? I don't want the trans cooler." They verify they loaded as a manual and check the diagram - no cooler.

Ok, great. "Oh, and does it come with a cap? If not, do you have them? It's just a small 13psi cap"

They verify - "yes. it comes with the cap, we have those as well".


So I order it.

Get it home - it had the AT trans cooler and NO cap.

I call. They scramble, then tell me that's the only radiator. I tell them it's disappointing.

I mention there's no cap. "Are you sure? It shows the cap comes with".

I verify, tell them the part number. They ask to put me on hold.

I look up on Toyo DIY - different part number on the radiator, but it only crosses to the one I have- damn.

They come back about 5 minutes later and say they had to dig through multiple service bulletins but that the cap doesn't come with.


So in the end I pay Toyota prices for, what I would consider to be the wrong radiator, and it's missing pieces from what I was quoted. They "gave me a deal" and knocked $10 off the cap price.



I also decided to replace the heater lines under the hood. When I did the TB I decided they were weeping but ok and looked to be a PITA so didnt fo them at that time. They didn't make me wrong. I used Napa hoses since Toyota pricing wawas way overkill.

Photos of heater lines before/after, a way to the lower bolts without removing anything, and the part number/radiator.

Also photo of the very used RADKITPLUSA....
 

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Bad clamps and a bad rad cap are the main culprit in my opinion on why the vented cap setup can’t maintain a full rad.


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Bad clamps mostly have leaks. I believe the bad cap is why they wont pull from the reserve tank.

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Alright, so... 1997 3.4, 4x4, manual.



I call Toyota and ask for price and availability. They give me a price and tell me Tuesday (last Friday). Price was lower than the Napa price for a Denso and only a few more dollars than the Napa brand.



I verify...



"This is for a manual, right? I don't want the trans cooler." They verify they loaded as a manual and check the diagram - no cooler.



Ok, great. "Oh, and does it come with a cap? If not, do you have them? It's just a small 13psi cap"



They verify - "yes. it comes with the cap, we have those as well".





So I order it.



Get it home - it had the AT trans cooler and NO cap.



I call. They scramble, then tell me that's the only radiator. I tell them it's disappointing.



I mention there's no cap. "Are you sure? It shows the cap comes with".



I verify, tell them the part number. They ask to put me on hold.



I look up on Toyo DIY - different part number on the radiator, but it only crosses to the one I have- damn.



They come back about 5 minutes later and say they had to dig through multiple service bulletins but that the cap doesn't come with.





So in the end I pay Toyota prices for, what I would consider to be the wrong radiator, and it's missing pieces from what I was quoted. They "gave me a deal" and knocked $10 off the cap price.







I also decided to replace the heater lines under the hood. When I did the TB I decided they were weeping but ok and looked to be a PITA so didnt fo them at that time. They didn't make me wrong. I used Napa hoses since Toyota pricing wawas way overkill.



Photos of heater lines before/after, a way to the lower bolts without removing anything, and the part number/radiator.



Also photo of the very used RADKITPLUSA....
I have never seen an OEM radiator come with a cap. Also you are 100% correct the manuals dont have a trans cooler. You must have some really interesting characters in your local dealer parts department. Maybe it was their first day. :/

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I have never seen an OEM radiator come with a cap. Also you are 100% correct the manuals dont have a trans cooler. You must have some really interesting characters in your local dealer parts department. Maybe it was their first day. :/

Sent from my SM-J337V using Tapatalk

Nope, the usuals.

What I meant was that the manual version of the radiator without the cooler is no longer available- the part that is in their schematics now interchanges to the new number that is for the automatics with the cooler.

Check Toyo DIY if you don't believe me...
 
I have never seen an OEM radiator come with a cap. Also you are 100% correct the manuals dont have a trans cooler. You must have some really interesting characters in your local dealer parts department. Maybe it was their first day. :/

Sent from my SM-J337V using Tapatalk
Apparently when Toyota switched OEM radiators (and part numbers) they now use the same one for manual and automatic. Radiator & Components for 2000 Toyota 4Runner | Toyota Parts
 
Just leave the shipping caps on the trans cooler connections and move on. It won't hurt anything being there. Or use it as a power steering cooler?

-Charlie
 

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