Search found 3 matches

by Seraslibre
Thu Sep 15, 2016 7:41 pm
Forum: Automotive Air Conditioning Forum
Topic: Help with variable displacement dual evap system!
Replies: 7
Views: 13596

Re: Help with variable displacement dual evap system!

Problem remains. Did this tonight; 1. Removed valve cores and checked for leaks - all ok. 2. Verified in and outflow through each valve core (hi/lo sides) both with and without manifold set - all ok. 3. Blew compressed air through high and low sides - and verified I have flow in the circuit - Air co...
by Seraslibre
Thu Sep 15, 2016 7:02 am
Forum: Automotive Air Conditioning Forum
Topic: Help with variable displacement dual evap system!
Replies: 7
Views: 13596

Re: Help with variable displacement dual evap system!

I'm starting off with a new Freon tank, so that is not the issue. I'll look into the gauges/fittings being the issue and will report back what I find. When pulling a vacuum it took ~5 minutes to get to 29mmhg. Is it possible the manifold set or the schrader valves work on vacuum but obstruct inflow?...
by Seraslibre
Wed Sep 14, 2016 8:19 pm
Forum: Automotive Air Conditioning Forum
Topic: Help with variable displacement dual evap system!
Replies: 7
Views: 13596

Help with variable displacement dual evap system!

I'm fairly experienced doing ac work, but I'm stuck in a rut. Vehicle in question is a 2007 Toyota Sienna. It uses a variable displacement compressor with a magnetic clutch. There are two evaporators - one up front and another in the rear of the van. System Freon capacity is 27.5oz of R134a. To unde...