05gtgreen

Alright, I know about the fuel pump causing problems on the highway after driving a while, but could it cause problems after running a while to cause it to idle funny. After driving for a period of time, when you push the clutch in and it idles down, sometimes it will idle at 400rpm for a while, and if you hit the gas it takes a while for the rpm's to go up. I don't have any tune on it yet, all the mods are in my signature. Oh, and it sometimes idles all over the place, like 400 up to 1000rpm fluctuating.

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2005 mustang gt - green, black leather, 5spd manual, 1000 shaker, tint, shaker scoop, hurst short throw, C&L CAI with SCT X-cal2, jba longtubes, offroad h, flo-pro mufflers, polyurethane motor mounts
1986 buick grand national
1996 chev 1/2 ton 4X4

SonicStanGirl

Hey there,
I had the fuel pump issue after driving a while and had the TSB done, fuel pump replaced. Then I started haveing the exact problem you are describing until finally one day the car went into failsafe mode and decided not to go anymore. Turned out it needed the throttle body replaced.

Been running fine since!

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2005 Sonic Blue Metallic GT Premium
5sp Man., IUP, Dk charcoal leather, Active Anti-Theft & Shaker 1000