Good point ayathu,
After thinking hard last night & today, actually I think finally the conclusion is summarized in new statement below.
It is not about which ECU match to which compressor match to which gas type, any of the 3 can be swapped out and we wouldn't know !!!!
The undenying way is now to identify the one thing difficult and troublesome to change, which is the blood-veins = wiring loom. Then we can know which ECU, which compressor and finally which gas.
Welcome to highlight loopholes or mistake in my new understanding. Thanks. As an example, I finally re-read my own writing/record/website.
- My wiring loom is 93 June, means after ~93.5 type, because my ECU is in [2]
- My ECU picture also shows the new part number 1A190 with 576.
- Means my compressor should be 5 wires, but I didn't record down part number. Should be TV12EC DENSO compressor.
- Finally the gas should be R134a.
If anyone of these are wrong, idling BAD !!!!
Correct?
So, if anyone doesn't trust their ECU & compressor (physically see able), then check wiring-loom, should have date code somewhere or based on compressor socket 5 or 6 wires as well as ECU socket the extra air-cond wire, etc.
haih, another sad thing for me, my wiring & ecu is supposed to be >93.5, in short new version, but I recall still seeing the VCV idling up thingy..... or is it 100% necessary in all SVT?
I believe so, cause ECU A_xxxxx has certain pin outs only for air cond-compressor A_yyyyyy to function properly(unless we know which goes where than we can terminate the ECU pin-out to match the air cond compressor from another model or even make)
for gas A_zzzzzz ,I think should stick to recommended ones , we never know why, maybe can cause damage to compressor or pipings due to the chemical properties or pressure ratings..just my 2 cents.
---------- Post added at 04:51 PM ---------- 6 hour anti-bump limit - Previous post was at 04:49 PM ----------
What scares me next is the air-cond amplifier, are they all the same SVT early vs. late vs. BT. ???