Stumbling/Hestitation

[jmsa540]

First time experiencing this today. Drove about 15 miles around time and went to a store; came out and I started it up and was stumbling very noticeably. Put the car in reverse and it was still stumbling but it went away. Not it's intermittent when I start the car. Thoughts?

[maximusslade]

I know I only have a Vic... but I have had misfires that did not cause a CEL that presented like a transmission slippage issue.

[88LTDCV351]

Maybe change your spark plugs or COPs?

[jmsa540]

I was thinking the IAC was bad? Are non-oem IAC's a no-go?

[Turbov6Bryan]

Maybe change your spark plugs or COPs?

+100000000 and 1

[justbob]

Motorcraft IAC

Try cleaning yours first, if any changes just replace it.


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[jmsa540]

Are autolites good for these cars or not?

[maximusslade]

I wouldn't hesitate using autolites.

[Mr. Man]

Be very careful not to over torque the spark plugs on your '03, only 4 threads. Maybe someone knows the proper torque spec and can post up.

[fastblackmerc]

Pat wrote up a DYI for spark plug changing