Do I have a bad coil?

[underthehood]

My car recently started bogging at low rpm's, only when i would slowly get on the gas. Do I have a bad coil? My check engine light isn't on. I went to auto zone to see if they could tell me, but without a check engine light on they couldn't do anything for me. Anyone else havimg this problem!

[fastblackmerc]

A bad coil most likely won't cause a code or a CEL.

I'd try cleaning the MAF, throttle body and IAC first.

[dbc1965]

he's right ford told me 06 and up changes were made to PID where one bad coil will comeup on CEL. Had same problem where I change fuel filter, Maf, egr, still no changes with a slight poping noise coming from rear of car. all along number 5 was throwing spark from side of boot not ontop of plug seeing very small brown spot on boot. I think below 5 ohms on meter is consider bad coil.

[SpartaPerformance]

You would have to run a power balance test to see which coil is weak.