What is the correct AC low side pressure during idle for a 2007 Ford 500?
What is the correct AC low side pressure during idle for a 2007 Ford 500?
60 psi. That will give you 62 degrees with 134a. If want it colder a little less, but not so cold it freezes and you will be sacrificing capacity.
R134a systems in vehicles are charged up by the WEIGHT of the refrigerant, gauges are used to check compressor function. Also, ambient temperature plays a huge roll in pressure readings. At 65 degrees F, a typical gauge reading in a fully charged system might be 30/140, but if it were 95 degrees F, 45/260 would be about 'normal', and this is also @ 1,300-1,500 rpm, not idle.
The compressor is designed to compress gas into liquid, and overcharging the system, the refrigerant will be returning still liquid and slug the compressor, likely damaging it.
The compressor for your car does not have an over-pressure relief valve, so an overcharged system can also rupture a line, condenser, or the evaporator core.
Unless all the refrigerant in the system is evacuated, and then added back by weight, you risk damage to the system.
Somewhere under the hood, is a sticker showing how many ounces of refrigerant the system holds.
If you're going to charge a low system without the right equipment or knowledge anyhow, get the engine up to 1,300 rpm, add a bit of R134a, and feel the aluminium low line by the dryer. When it gets moderately cold, stop.
This ain't the right way at all, but it's kinda accurate, where a gauge is not.
UPDATE; Here is the chart you asked for. These pressures are for 1,500 RPM.
There should be an underhood sticker with that info.
- Why is my engine shaking during idle at stops and park? I got a ford 1999 taurus SE with 100,000 miles on it. I just changed the spark plugs and wireset out and it got even worse. I was thinking the IAC might of just gone bad but before I go get one I wanted to ask if there was anything else I could test before buying more new stuff for it.
- 1998 Ford Taurus Dies At Low Idle? 1998 Ford Taurus I know needs new alternator because battery won't stay charged. When I boost the vehicle off it will run at 1000 RPMs smooth. No vibration. As I lower RPMs below 1000 it begins to sputter almost like it's missing. Eventually will die completely. Could the alternator not keeping charge to the system cause this? If not what could be other problems?
- I bought an Actron CP9125 Code Reader to try and diagnose a rough idle at cold start on a 98 Ford 4.0 engine. The rough idle had not caused? The CEL to come on. I plugged the code reader in with just the key on and pressed read and the little asterisk goes half-way across the screen one time and stops. I press the read button again and it reads 0 codes. I was thinking it would scan multiple times to check for pending codes or other issues. I tried it with the engine running and the same thing happens. Is this code reader operating properly?
- 2012 Ford Fusion low tire pressure light on? I just went out to go fill up my tires and I filled them up and after filling them up twice, the light was still on.