rough idle_cant change replace much more-no codes

[markus2]

i think the cap is venting fine- because I bought a new motorcraft gas cap-a few weeks ago. I will try driving with it off none the less. I will try anything at this point. I feel like a virgin with a deadline to have sex before HS graduation. Its rough guys. My fuel economy has also dropped to 16-18 mpg range. I used to get 22.8mpg on the highway prior to the head gasket.

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[markus2]

driving with gas cap off-no difference in drivability and issues.

Ordered seafoam- it will arive in a week.

I am so fed up with this

[markus2]

seafoam added to crank and gas tank-no difference.

I have noticed this.
The unstead idle.
flat spots.
and loss of overall power...
...DOES NOT OCCUR UNDER COLD ENGINE DRIVING.

I drove car before it warmed up, from a 40 degree morning, and it seemed to have more power than ever-
but after about 5-10 min it had the unsteady idle again-became sluggish under all types of acceleration.
What gives.


Come on guys????????????

[AdderMk2]

clean maf
clean IAC
replace O2 sensors
reset ECM
reset base idle

[markus2]

clean maf-its speed density
clean IAC-its brand new
replace O2 sensors-they are brand new
reset ECM-many times
reset base idle-many times


Thanks man-but I have done it all.
Sucha a PITA.

ITs gotta be a simple BS something.

[lxman1]

TPS voltage under .99 volts at idle?

[lxman1]

Check it thru the range of motion as well. It may have a bad spot in it.