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

Idling Problems

  • Thread starter Thread starter brtnstrns
  • Start date Start date Nov 15, 2010

brtnstrns

Member
Dec 19, 2003
606
11
19
Lewisville, TX
Nov 15, 2010
#1
  • Nov 15, 2010
  • #1
My car is idling really badly, sometimes almost stalling out when I'm coming to a stop and put the car in neutral (manual transmission). I replaced the IAC within the past 6 months due to similar, but much worse issues. Is there anything else I can do to get better idling performance, such as something with the computer or anything else? Thanks.
 

GDawg

Founding Member
Mar 22, 2002
1,469
19
68
Nevada
Nov 16, 2010
#2
  • Nov 16, 2010
  • #2
Check for vacuum leaks... that's most likely it.
 

trinity_gt

10 Year Member
Jan 31, 2003
3,125
81
99
Canada
Nov 16, 2010
#3
  • Nov 16, 2010
  • #3
GDawg said:
Check for vacuum leaks... that's most likely it.
Click to expand...

+1.

Things to check include the usual vacuum lines but also check the duct running from the MAF to the throttle body for cracks down in the corrugations.

Also check the PCV valve. If it's stuck or not sealing well it can constitute a vacuum leak too.

If no obvious external vacuum leak can be found, you might want to remove the EGR valve and check for carbon build-up that might be causing the valve to stick in the open position.
 

brtnstrns

Member
Dec 19, 2003
606
11
19
Lewisville, TX
Nov 16, 2010
#4
  • Nov 16, 2010
  • #4
Awesome. Thanks guys I'll be sure to check all that out.
 
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