mustang chugging

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05-25-2008, 06:40 PM

Adrenaline_01

Thread Starter

Join Date: Oct 2007

Posts: 3

mustang chugging

I have a 2001 mustang gt that has been chugging in lower rpms when its under a load. I've checked the coils and replaced the spark plugs, but it still chugs. Changing the plugs helped a little bit and putting FI cleaner in it will help it for a couple days. Any thoughts as to what it could be??

05-25-2008, 06:55 PM

oxfordgt

6th Gear Member

Join Date: May 2006

Location: Ohio

Posts: 6,448

RE: mustang chugging

Still have your stock midpipe with cats?

05-25-2008, 07:04 PM

Adrenaline_01

Thread Starter

Join Date: Oct 2007

Posts: 3

RE: mustang chugging

No i have long tube headers and a H pipe with hi flow cats

05-25-2008, 07:08 PM

Mustang3GT07

6th Gear Member

Join Date: Mar 2007

Location: Chicago, IL

Posts: 6,169

RE: mustang chugging

You clean out your throttle body?

05-25-2008, 07:11 PM

black35th

4th Gear Member

Join Date: Jun 2007

Location: Ohio

Posts: 1,996

RE: mustang chugging

Replaced your fuel filter?

05-25-2008, 07:27 PM

Adrenaline_01

Thread Starter

Join Date: Oct 2007

Posts: 3

RE: mustang chugging

I haven't replaced my fuel filter. It feels like a misfire when driving it. When i checked the coils the spring seemed fine with no black line or anything... Is there any other way to check them?

05-28-2008, 01:03 AM

ottos

2nd Gear Member

Join Date: Jan 2008

Location:

Posts: 213

RE: mustang chugging

It probably is misfiring, you can double check by pulling out the plug of the misfiring cylinder. It will be black. I think you too need a new PCM calibration from Ford... there's about 10 threads on here with the same issue.