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Old 12-23-2018, 01:32 PM   #55
06YarisRS
 
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Quote:
Originally Posted by WeeYari View Post
Your pressure sensor may be finding its place onto your shopping list. Mine failed in 2014. I lived without a/c until last year when I finally diagnosed my non-functioning a/c.

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You are probably correct. They look fairly inexpensive, but would necessitate another discharge, vacuum and recharge. I think I'll do this in the spring/summer. I'll probably replace the schrader valves too as well as the o-ring at the firewall (expansion valve?).
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Old 12-23-2018, 07:48 PM   #56
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Quote:
Originally Posted by WeeYari View Post
Your pressure sensor may be finding its place onto your shopping list. Mine failed in 2014. I lived without a/c until last year when I finally diagnosed my non-functioning a/c.

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Just ordered a Denso on eBay for ~$11.00. Do you happen to know, WeeYari, if the schrader valves are just standard R134 valves and if they are both the same size? Also, I think I'll need a special tool. I have one for tire schrader valves, but it may be different.
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Old 12-24-2018, 08:42 AM   #57
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Good price on the sensor. New? You wouldn't believe the cost of one through Toyota Canada. North of $600. Why is their price so high? Only available as part of a tubing replacement bundle believe it or not.

As for your Schrader valves, I can't imagine any reason for replacement. They sit there for life under their little protective caps.

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Old 12-24-2018, 08:56 AM   #58
06YarisRS
 
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Quote:
Originally Posted by WeeYari View Post
Good price on the sensor. New? You wouldn't believe the cost of one through Toyota Canada. North of $600. Why is their price so high? Only available as part of a tubing replacement bundle believe it or not.

As for your Schrader valves, I can't imagine any reason for replacement. They sit there for life under their little protective caps.

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Yes, it's new, unless I'm being scammed. lol.

https://www.ebay.com/itm/For-A-C-Pre...72.m2749.l2649

I think it was mainly leaking around the base of the fitting that holds the schrader valve (turning the manifold gauge dials may have loosened it), though I thought I saw a little bubbling inside the valve toward the base. I gave it a little tap on the top of the schrader valve and it seemed to seat and there were no more bubbles. They may be fine, but I thought since I have to discharge the system again to replace the sensor, I figured I'd do the schrader valves at the same time.
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Old 12-24-2018, 09:13 AM   #59
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I went with a somewhat more expensive listing. Can't remember why but I suspect it was because shipping on the cheaper ones was stupid high.

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Old 12-24-2018, 12:56 PM   #60
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often find valve cores loose in schrader stems
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Old 12-24-2018, 02:24 PM   #61
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Quote:
Originally Posted by dogsridewith View Post
often find valve cores loose in schrader stems
Thanks. I am going to pick up an A/C schrader valve tool as well. May try just snugging them up a bit.
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Old 12-27-2018, 10:16 PM   #62
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Our local APM auto parts store actually had an A/C schrader valve tool - and this after calling half a dozen shops in the city 80 kms away and no one having one. $6.00 + tax out the door. I'm heading across the border tomorrow to pick up my Denso sensor, 2 cans R134 and the schrader kit.

Current plan is to wait for a warmish day, get my garage up to 65 - 70F, aim my big fan at the condensor and try again. I'll evacuate, replace the o-ring at the expansion valve, the schrader valves and pressure sensor. Then, a lengthy vacuum test. Finally a recharge quantity of R134 (~ 13 oz) and pressure tests based on ambient temps.

From both what Trevor said and what I've read, this is work best not done in winter. I wonder if my vacuum tube would have iced up so badly in warmer weather.
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