zanderwitaz

this problem is so common with these cars its not even funny. I think its the fuel filter or the plugs. Ive seen 5 threads like this in the past 2 days.

xxkazp3rxx

but i still wouldn't understand why it would cause a problem on the first start up if i dont let it warm up... if it was the fuel filter or plugs.. wouldn't that effect it anytime i drove or started it up later in the day??

Brute03

hey get your own thread buddy . anyway i have a new fuel filter that i should be putting it Saturday, i guess i'll change the plugs while i'm at it

GTuner

plugs n wires shood do it, my buddy had the same problem and it fixed his, and ya the feul filter is defently a good idea to.

Brute03

yea if my car had plug wires i would change those too

HaV

Have you cleaned your air intake at all? Forget to plug back in the MAF? That'll cause it in a heart beat.. will act like that and jumpy untill you get to a higher RPM range. Ive seen people do it before... Laughed my *** off at more then one friend who thought something was seriously wrong with their car.

Martin99GT

I had a small hesitation when I got my 99 GT, took it to AutoZone and it read a 5 and 7 misfire, changed the plugs and the prob went away. About a month latter the dreaded light came up again. Haven’t scanned the codes yet but I bet it will be the same thing, therefore I'll go for the coils. I’ve only had this car for like 3 months, it has always has a little hesitation at midrange RPM's. The guy before me must have been an idiot because he ran an oiled air filter on it. Along with that he cut out the protective lining around the coil for a "Custom look" gay ricer crap if you ask me. I guess what I mean to say here is that hesitations form what I here are farley common in mustangs so just keep at it and you will fined the prob. I would suspect if the hesitation is really bad check the ignition system, from the plugs all the way back to the grid. I have heard rumors going around that for cats are bad as well, don’t rule them out.