2007 ford sport trac xlt 4.0 v6 why does my throttle response stink i step on the pedel and it takes a second for the truck to move try to pass and truck bogs then goes dont have a tps its electronic

SOURCE: Change the brakes on 2007 sport trac

it has front and rear disc brakes, disc brakes are very simple to change out. Most disc brakes have two bolts that hold them on, one on the bottom one on the top on the inside of the brake caliper, they may be an allen head, or just a bolt. Remove them counter-clockwise. After you remove the two bolts, lift up and away on the caliper and the whole assembly will come off. Once you pull the assembly off you will see the two pads, one of them is driven by a piston, the other one is fixed. Remove the fixed one, they just pop off (have little metal clips you may have to slide the pad off). Take a C-clamp or something comparable to squeeze with, place it on the back of the caliper and on the old pad thereby squeezing the cylinder back into the piston, once you squeeze the cylinder back into the piston, it will give you room needed for thicker new brake pads. Piston should retract with the c-clamp fairly easy, shouldn't be a whole lot of resistance. Remove c-clamp after you get it to retract and remove old pad. Put new pad on, just like you took the old ones off. All four are basically the same to change out, they all have two bolts holding them on. You pull those, get the pistons to retract and replace the worn pads, put them back on, line up holes, put bolts back in... and your good to go. When you get back in the car and turn the key on, you may have to pump the brakes a few times.

SOURCE: 1998 Ford F-150 4.2 V6 starts and idles fine ibut bogs when step

i had a van do this same thing to a tee turned out to be a broken key pin in the harmonic balencer causing the timing to ****** replaced balencer and ran like a dream there is a crank sensor grid on the balencer when the key pin broke it trew the timing off

SOURCE: 2007 ford sport trac 4.0 v6 rough idle no cel and no codes new spark plugs plug wires are getting plenty of fire tps is good iac looks fine dont wanna chase my tail anyone had this problem

rough idle is a sign of air /fuel mixture wrong
check for vacuum leaks in all vacuum hoses including those under the dash and the transmission shift actuator
check for loos inlet manifold
it can also be from insufficient fuel pressure all of which will not produce a code

Stephen

• 21873 Answers
• Posted on Dec 21, 2015

SOURCE: 2007 ford sport trac 4.0 v6 rough idle was told this truck has no IAC? New plugs wires cleaned throttle body been smoke tested no vacumm leaks rpms jump when cold level off once warm no hesitation

Not having an IAC would only affect idle speed. A rough idle could be a weak coil, or injector among other things. It takes more spark and fuel to fire a cylinder when the engine is cold.
Are you getting a trouble code for any one cylinder ?