Flashing Service Engine light.

[Vile87]

I was driving when all if a sudden it started idleling rough and flashing Service.

So I read its misfiring and the most common issues are bad coils or spark wires. I went n bought both new,motorcraft, and the rough jolting diminished but its still there. I now read it could be the spark plugs or fuel injector. What do you guys think before I take it to a shop?

[johnofarch14]

Maybe the O2 sensors, just try to replace it or just take it to the shop they can figure it out.

[Dantheman94]

If its flashing you should stop driving it cause it usually means your cats are getting destroyed or contaminated or something else but either way it's not good

[l2plagears]

I would try the plugs dude 10.00 bucks at wal-mart and 15 min in your drive way

[Dantheman94]

Yeah if it's more than one cylinder than look at a coil or even an O2 sensor for that cylinder bank but if it's only 1 cylinder than u have a spark plug, wire, or coil and try not to run it to much cause again you'll wipe out your cats

[Vile87]

Ok its 9am. In going go buy all new plugs,motorcraft, and replace them. If it doesn't stop ill just take it in. I just hate it when they charge a lot for something semi simple

[SpectorV]

get the codes ran (free at some auto stores) then go from there

[Vile87]

Damn so i replaced my plugs and the car is smooth as hell. The old plugs looked like they had gunk n carbon build.. I had just placed them in about 8 months ago though. Did I wait too long cause from what I heard is plugs usually are changed couple thousands of milea

[l2plagears]

you did them or you brought it to a shop

[Vile87]

I did them this time, last time I took them to a small local shop to get them installed.