Tims 88GT

ok here it is when im driving down the road my rpms are fine just like normal but when i shift they float/come down very slow i fulled with my timing and nothing helped i droped my fuel pressuer and that dident help i put new plugs in that dident help i put a coil on it that dident help nothing seams to help.

please help me

nemethjames1

tps @ .98, iac (doubtful) ... then theres that vss or vsv valve... dont remember what its called

91hatchgt

Mine does the same thing... It is a very common thing. Don't freak out, it's probably just the iac. Set it to .98 as previously stated. I need to check mine.

Tims 88GT

whats the iac im pritty new to this im only 16

88GT40

do yourself a huge favor and buy a book for your mustang from an autoparts store and study it so can can learn about all of the snesors and how to work on your car when you run into a road block come to this sight for guidance. but for now the iac is attached to the throttle body it is fairly big and tubular it's on the frint part of the throttlebody closer to the radiator it has a wire harness attached to it and two bolts hold it on.

Tims 88GT

thanks ill clean it and see if that helps