99 Mustang Gt Idle

[gore2626]

Problems now: Main issue now is when the AC is activated, the idle fluctuates and when the AC is turned off, it dogs the system. Idle will remain low. I was having random idle issues with no AC but was fixed.

Fixes:
- Ignition Starter Switch
- Cleaned Throttle Body and Plenum
- EGR Valve
- Cleaned MAF
- IAC Valve
- Fuel Filter
- Air Filter
- Battery
- Alternator
- Serpentine Belt
- Spark Plugs
- Battery Terminals
- No Vacuum Leaks(that could be found)
- I hope I listed all

I have spent some time working on it. Random idle fixed. Now need to know about the AC. Could it be low freon or bad compressor?

 

[COramprat]

What issue are you having now that the random idle is fixed? It could be the clutch going bad. I don't think it is low refrigerant sine the compressor would cycle on and off in short intervals.