Looks like it is.
Pin 1 black PCM plug A/C request.Does it ?
I believe it shuts off the AC compressor at over 500 psi ps line pressure .
I agree with you 100% on the pressure test! None of the shops I have taken it to have pressure tested it, included the one that's warrantied my pump. Their assertion is that it's a new pump, so pressure through it should be fine. Hypothetically, yes but as we know most likely the line is causing us issues which would show up in a pressure test.
Thanks for sticking with me; I'm sorry I am so slow.An impala is a caprice
I was trying to simplify this for you but it just got worse.
Buicks can be had with or without the variable assist so referencing doesnt help.
Caprice- Impala NEVER had variable assist .
So , if you ask for pressure hose to fit a Caprice , or Impala ( same thing) you will be getting a hose that fits the pump without the solenoid in place.
Physically, fitting the 94-96 ( the whole car line ) the pump casting is the same.
Same as all the boxes from a hydraulic fitting respective.
The pump, if you have the short, non solenoid, nut,
( I'm not going to refer to it by name because you will just get confused more)
the caprice- impala pressure hose will screw into it.
That little doo-dad will control idle. No real habit doing that... Don't think mine is leaking but I can have a looksie and see.Read over this thread carefully.
The switch in the line that is closer to the box,
(You can also see it in the photo of my hose I took 10 minutes ago)
has nothing to do with the variable power steering system and the solenoid the shop removed from your car.
If yours is there and solid, sure move it to the new hose.
If yours leaks , then don't bother.
If you make a habit of cranking the wheel standing still ,in gear ,dead idle, AC on then you might need it.
Finally makes sense. They MUST have used that adapter in my Caddy pump... Never mentioned it to me but they had to have to get a line to work in there. I wonder where they got that little hex piece from to install....There you go,
If you unscrewed that 1" hex on the chev pump and removed it, "poof" that pump essentially turned into a caddy pump waiting for you to put the solenoid in.
Stuff that hex piece and internal bits in the caddy pump and again, "poof" your caddy spec'd pump turns into a chev pump.
So to speak,
That switch in the line tells the ac to disengage
( think we covered this 🤔😉) above a given pressure.
Its not like the IAC wouldn't try to keep base idle but dropping the AC helps it react to instantaneous load somewhat.
This is why bluehairs parking their caddies are sweating in the summer
Thanks for the thoughts. I would do more, but it's my only car so it's stuck between a rock and a hard place.Dude. Your having to put in a ton of legwork, for a job you paid a shop to handle for you. I like your ‘willing to learn/want to understand’ style. If your can’t find a good mechanic…you’ll have to become one yourself….saves you a ton of money & some headaches. So think about telling this hack shop “I want you to install new power steering lines. All of em” since they suck at diagnosing, their probably really good at ordering parts, and changing em out. Then once your P.S system is sorted out, never, ever go back there. You’ve been dealing with this for a month now. It’s time to land this plane. This forum will help ya from there