3.0 Idles rough accelerates great

[chiloh30]

Hi, all, I usually come here to seek help and look for inspiration.
My problem is this.
I have a 99 ranger 4x4 3.0 ffv. it through me a code telling me that my bank 1 was lean so changed that o2 sensor things got a little better, what is does now is starts good,sets at idle rough,,,as soon as I accelerate it is right there blastin done the road, if you hold a steady speed for awhile it is like it is "stuffed up" feels like you turn the key off with it in gear, when you let off the gas pedal it clears up and off you go, checked for vacum leaks et cetera, really need some help.

Thanks

ps, it is not giving any codes with this or activating cel

[BlueOval2003]

Mine does the same thing I have an 03 3.0 2wd mine idles rough but when I unplig the maf it smooths out. The stuffed up feeling your talking about at steady speeds i also get. I think its because when your cruising the overdrive is on and when you let off the gas and then step on it it turns off (this is just a theory of mine) but for the idle I would check the maf only reason I haven't changed mine is because I have no codes.

[chiloh30]

ok, cel finally came back on gave me the "lean bank 1" after replaceing o2 sensor, going to spend all saturday looking at this,


Ok,,this is what happened

!. got out all my tools
2. done a primary and secondary circut test on coil pack both ok
3.put an Actron inductive timing light on each plug wire all six firing
4 made sure new 02 sensor was hooked up good
5.took my trust mechanics stethascope
6. number 1 injector not clicking. pulled it and it was way out of ohms reading not even working
7. put in a spare injector I had laying around
8. Truck runs great

[evanesce69]

my bank one was lean, but it was cause by a leaky makifold to head and manifold to u pipe....

read near the end of my 2005 sable ffv pushgrog to 93 ranger thread

near the end i list what i did.... worked well

again kudos earl43p!


still having troubles... that was not the fix