Daniel D.

Have a 2001 Mustang GT Convt.
I have changed my fuel pump, I changed all 8 spark plugs and also all 8 ignition coils what else can I do...my car hesitates when I take off and studders a lot.
What can it be? What else can I do ?

sampey43

Tried cleaning the throttle body?

Daniel D.

Ok what would be the next step if that doesn't work.
I just don't wanna be spending a lot of money

JDF

Ad the idle air control as well as your mass air

bluethunderhorse

most likely your mass air sensor is dirty or faulty

br23will

No check engine light?

texastboneking

^this^

Onesickstang01

Also do fuel filter if you havent already

White94GT

+1 sounds like a dirty mass air sensor , my car was there the same thing when it was bone stock and once it was cleaned it was a night and day difference !!

skunk21

I would do the maf cleaning like the others stated. If it doesn't work then I would look into getting it checked on a computer and taken for a drive so they can check the paramiters, etc or some shops have a unit that will plug in and you can drive it for a day or two and it will log data. you could have a sensor that is a having a voltage issue or something along those lines that may be tricky to pin point.

01bullitt

How do you clean,the maf??

bluethunderhorse

Advance auto parts has a cleaner spray that does the jobs nicely. Don't use brake parts cleaner it leaves a residue that will make your problem worse

texastboneking

I use brake clean all the time.. read the can. A good quality brake clean states on the can that it leaves no residue.

shaunrc

What mods do you have done and what type of fuel are you running