Hello, my 2003 Mustang gt began idling at over 2000rpm on my drive home from work the other night. I checked the TPS and it was working properly so i checked for vacuum leaks and found nothing. I then took the IAC off and cleaned it thoroughly and popped it back in. The car went back to...

Greetings, I have a new to me 2003 Mustang GT that I'll start racing this weekend in SCCA, wish me luck!

I just recently bought a 2003 GT with only 21,000 miles on it - I felt like i had really scored :D - until a few weeks ago when it started to cough & just stopped - it was determined that the fuel pump was the problem - it only had 20/25psi & it shouldve tested out at 55/70psi. The fuel pump...

Sooo I have always been wondering how much of a real performance boost the bama tunes will do for a 2003 Mustang gt. I currently have a 70mm throttle body with the cold air intake as well as the jegs offroad h pipe going back to flowmaster 44's. I have been wondering if maybe I should just go...

I'm looking to replace my back tires soon and I was wondering if you guys had any suggestions of good and affordable tires for a 2003 Mustang GT? I'm willing to sacrifice speed for traction if that helps any. Also, I'm in southern CA, so something that does well in the West Coast heat would...

Hello everyone! I'm a new owner to a used 2003 Mustang GT. This is my first muscle car in general and I want to learn as much as I can from you, more experienced owners. The following is a picture: http://i56.tinypic.com/9hotgo.jpg Right now my main concerns and needs are: 1. Getting and...

Hey everyone, I just want to introduce myself. My names Dean and im in Tucson, Az. Im a long time muscle car fan/owner. I had a Chevelle Malibu in high school, a 99 Camaro SS when I was 18, and now I own a 03 Mustang GT with straight pipes and im loving it. Hope to see some you around...

Hi there, Im pretty new to this forum. I wanted everyones opinion on whether I should keep my current mustang or sell it and buy a newer (2002-2004) mustang GT? My current mustang is a 1997GT: rio red with black bullit rims. I love it but the reason I'm considering getting another GT is because...

Hola buenas tardes, ocurro ante este foro de conocedores y expertos de mustang porque estoy desesperado, tengo un problema con mi stang 4.6l GT 2003 automático he acudido a varios talleres mecánicos pero no he resuelto mi problema; explico: A mi stang le empezó un ruido muy extraño que parecia...

I just got my 2003 Mustang GT yesterday and I've already found myself eager for a new exhaust, mainly for the sound. Performance is definitely a positive, but for the money I have now a muffler (which brand/series?) will probably be more practical as opposed to the entire exhaust kit. Also...

Hey guys i need some help figuring out what should i upgrade when i get my T70 turbo in. For example should i do a pi heads and pi manifold swap, should i port them? What size and what brand of throttle body and plenum should i get? Just things you think i should up grade. So far i have a...

Ok. So I barely got an 03 convertible gt... Traded in my 07 v6.... I need some advice on what else I can do to my car... So far I have a k&n cold air intake .. Bbk under drive pulleys and a diablo sport predator tuner w 93 octane reading.... I was thinking of some gears? But idk anything about...

2003 Mustang GT 4.6L When do I need to replace my clutch? I currently have about 88,000 miles on the original stock clutch. The motor is stock and I'm not really having any problems with the stock clutch. Should I replace it anyway or wait for indications it's about ready to give up the ghost or...

I am about to purchase a 2003 Mustang Gt with 60,000 miles on it from a dealership, I am new to mustangs and glad to get rid of my grand prix, but I would like to know what some common problems with the model are so I can check and possibly get the price of the greedy dealers down a few hundred...

hi. seems like lately i have been having some trouble putting my gear into place.. as if it gets stuck then i have to do it again for it to go in properly.. im new.. today is my first day on the forums.. what seems to be the problem? Thanks

I'm looking for some direction on where to go with my next upgrade on my stang. So far I've got an 2003 gt with steeda cat-back, preditor tune, bbk cai and a typhoon ported&polished intake manifold... Any suggestions?

Hi, I have a 2003 gt and it is leaking coolant out of the cap when I shut the car off. I replaced the cap but just started to leak again the tempeature is fine starts cold and warms up. Does anyone know what my problem is and how to fix it? Thanks jonathon