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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

99 Mustang Gt Idle

  • Thread starter Thread starter gore2626
  • Start date Start date Jan 11, 2014

gore2626

New Member
Dec 28, 2013
8
0
2
Vancouver, Washington
Jan 11, 2014
#1
  • Jan 11, 2014
  • #1
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

...I can take it. I think.
20+ Year Stangneter
Mar 2, 2003
8,474
1,463
223
Sea of Tranquility
Jan 11, 2014
#2
  • Jan 11, 2014
  • #2
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.
 
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