New 2003 cobra acting like ****box

[knubbepwn]

Ok i just bought a 2003 cobra and it was running great.I figured hell i just bought it why not get some maintenence. I took it to a local shop xxx motorsports. .But on the way home it died 2 times when in normal load and low rpms it just died.Also when driving 40-60 in low rpm the car feels like its jerky and i smell something but its not oil and there is no smoke. to get this list of things done to it. at this shop. Jerky as in its missfiring or not getting enough fuel.Mind you if i give it the gas it gets all the power. but no noise or anything.NO lights come on for a few moments and then it starts back up. We are in a cold season and i cant figure that changing all the old fluids to new fluids would make the car run like ****. Help me please.

Transmission fluid change.
I got a full synthetic mobile one oil change with filter.
I got a fuel filter change.
I got spark plugs changed.
I got the oil changed on the supercharger as well.

 

[hotcobra03]

03

welcome

for starters did the check engine light come on? or maybe flash for awhile than go out?


i hate guessing but if car did run ok before its something they did..

heres a link to get into a free chiltons library,,for if you need info or even work on your car yourself

Free chilton's manuals for all makes and models! - Ford Mustang Forums

 

[2002BLGT]

Have you called the shop back ?

 

[Noobz347]

Take it back.

 

[knubbepwn]

No, check engine lights no codes. If anything it would be a soft code. I did some research its atb and something to do with needing a flash to stop the stall in deacceleration. or clean the stock one. Regapped the spark plugs runs good but has its random shut offs.

 

[hotcobra03]

Terminator FAQs


have you read thru this?

this car is 8yrs old ..i would think if the pcm was causing the stall issue it would have been noticed when new and reflashed than


here is from a search on svt performance on the stall issue
4pgs of reading
SVTPerformance

 

[1987LXragtop]

It was running fine - you took it to a shop and now it runs like S**T. Hmmmm. Did you take it back and say WTF?

 

[notch32v]

hmmm

sounds a bit sketchy... sounds like a computer problem (o2?) definitely take it back to the shop if it started after they got done with it then they did something wrong... This is why I do all my own maintenance~ good luck

 

[nightmare72]

My cobra would stall and sometimes die like that at idle during the summer, also it will sometimes get stuck at a around 1800 rpm at idle, ive done some research and i think on mine its the idle air control valve, and its a common problem with the 4.6 mustangs. I don't know if that sounds like the same thing you have.

 

[SVTZAK]

Check the gap on your plugs. I had the same problem when i did my tune up. they should be at .32

also, my car was dieing at ldl. it was running lean, so check that out too

 

[Rookie71]

I assume that since this is almost a month old, that the issue was resolved?

Good luck either way.