2001 Ford Mustang engine running rough no check engine ligh

2001 FORD MUSTANG
180,000 MILES • V8 • 2WD • AUTOMATIC
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CHUCKEYB
  • MEMBER
  • 3 POSTS
I have a 2001 Mustang GT and about a week ago it felt like i had lost a cylinder. The check engine light has never come on to point me in any direction. I have changed the spark plugs and 1 injector that was bad. So far it seems to have done nothing for it.
May 3, 2008 at 10:42 AM
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ROB2008
  • ✓Experienced Mechanic
  • 258 POSTS
..
May 3, 2008 at 10:59 AM
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CHUCKEYB
  • MEMBER
  • 3 POSTS
It was doing it before i changed them, thats why i changed them.
May 3, 2008 at 11:48 AM
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ROB2008
  • ✓Experienced Mechanic
  • 258 POSTS
Sorry I didn't see that you had already replaced the plugs. Have you have the fuel pressure tested ?
May 3, 2008 at 11:56 AM
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CHUCKEYB
  • MEMBER
  • 3 POSTS
Yes it seems to be ok.
May 4, 2008 at 11:03 AM
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MUSTANG87
  • ✓Experienced Mechanic
  • 261 POSTS
sorry to butt in but it sounds like u need plug wires.engine light wont come on if 1 of ur spark plug wires is bad
May 4, 2008 at 6:35 PM
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BONECRUSHER
  • MEMBER
  • 1 POST
[the IAC valve needs to be cleaned or replaced. stands for: Idle Air Control. Typical cost: $330 including part. Part cost is about $120. Hope that helps....
Jun 7, 2008 at 2:55 AM
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