Has 143,000 miles, plugs changed 3 yrs ago with motorcraft. Has a miss
on #3. Check engine may be a egr sensor.
When the outside air temp is cool it runs ok, but if air temp gets hot
and car has it while at work it runs ruffer and wants to almost stall
when taking off. What could the hot air temp be affecting? Has a lean
code P172 or close to
that don't remember, think its on bank 1. No vaccum leaks