Which o2 sensor controls which ignition coil

Asked by May 05, 2014 at 11:59 AM about the 1997 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

4 Answers

98,515

They don't. The ECM controls the spark on your year. What are your issues? Have you pulled the codes?

I keep getting a misfire on bank 6. New spark plugs and wires. When I am in drive and on the brake, every few seconds I get a shake. I don't know how to explain it in technical terms. It is something like a hiccup.

98,515

Recheck the plugs, make sure you didn't crack one during the install. Then if you didn't find a cracked plug start looking for a carbon track on the coil towers, the best way to find it is to fire the engine up after dark and look for spark jumping around on your ignition components, if you don't see any then shut it down and use a spray mist bottle and spray a light mist of water on all of the ignition components and fire it up and look again, if you still don't find anything then try putting on some di-electric grease on the inside of the spark plug boots on all of the plug and coil ends, use sparingly, just a small amount coating the inside of the boot.

Thank you. I will try it tonight.

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