Clutch Fan on temp

[19963.4lsr5]

In my experience a slow leak will not expose the dye.

I’ll recharge the system and put my sniffer to work. It’s probably a Schrader that is causing the leak.


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[brillo_76]

In my experience a slow leak will not expose the dye.

I’ll recharge the system and put my sniffer to work. It’s probably a Schrader that is causing the leak.


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Good deal. I agree if the leak is microscopic you may not find it with dye.

I have seen vehicles pass vacuum tests and still have leak.

Just curious, how long has it been sense you charged it last?




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[19963.4lsr5]

I put one 12oz can in and at 64f outside I’m running 27psi on the low and 135psi ish on the high when the clutch engages on the cooling fan.

The pressure switch started cycling when I started charging it. I ordered another switch. Sadly I don’t think the switch is on a Schrader valve.


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[brillo_76]

I put one 12oz can in and at 64f outside I’m running 27psi on the low and 135psi ish on the high when the clutch engages on the cooling fan.

The pressure switch started cycling when I started charging it. I ordered another switch. Sadly I don’t think the switch is on a Schrader valve.


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I can confirm 97/98 are the pressure switch is not on a valve its direct line so you have to pull the refregerate out then vacuum down then push it back in..

 

[19963.4lsr5]

I can confirm 97/98 are the pressure switch is not on a valve its direct line so you have to pull the refregerate out then vacuum down then push it back in..

Since it started cycling I punted. Pain in the ass the difference between what Toyota does and what seems to be standard on US models.

Point being Toyota doesn’t look at spark knock until 3000rpms.

Really? So backwards…..


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[brillo_76]

Since it started cycling I punted. Pain in the ass the difference between what Toyota does and what seems to be standard on US models.

Point being Toyota doesn’t look at spark knock until 3000rpms.

Really? So backwards…..


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I never had to change one in 30 years for going bad. So I wouldn't knock Toyota too hard. Granted, that's one place the could have put a valve in.

Can they fail sure. It's extremely rare though.


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[19963.4lsr5]

Good deal. I agree if the leak is microscopic you may not find it with dye.

I have seen vehicles pass vacuum tests and still have leak.

Just curious, how long has it been sense you charged it last?




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I charged it when I put the engine in. Which would be almost 30k miles ago. Eventually I’ll retighten fittings. I don’t suspect an EVAP leak. But my sniffer will find and EVAP leak faster than a leak in the engine compartment.


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