Have check engine light on had three coils replaced. seems like everytime one is replaced another one goes bad. also was told by dealership that the car has universal cataylac convertsers on the car. and will prevent the cars check engine light from going out. so what type of converters do I need to have installed?

I would take it to a mechanic who knows what to do.
Personally, I would replace the coil pack that is giving trouble and if the spark plugs have done 60000 miles, replace them for peace of mind.
You should get a misfire code, cylinder 1 would be P0301, cylinder 2 would be P0302 etc.

No the cat converter can not unless it is plugged but the cylinder misfire can cause the cat to go bad. a engine idling high means a vacuum leak and misfire.

How long have you had this car? Could it be a flood car from Hurricane sandy?

Your engine computer is bad. It's a good thing that you mentioned about the check engine light dying also, as this is a classic sign of a bad ecm. I have repaired more than one of these Jeep computers, replacing the three power capacitors located inside the computer, and they have worked for years afterwards. If you don't have the skills or knowledge to repair the ecm, get yourself a rebuilt ecm unit and swap it out.

flashing engine light means engine misfire. let car idle and mist the plug wires down with water, rev the engine up and down and look for little sparks jumping from the wires. and arcing wires can cause problems. before changing any bad wires check the coil packs where the wires plug in the three small boxes on the top back of motor. they are three packs with two wires each. one pack at a time take the two wires off to reveal the coil towers. have an assistant start the motor and make sure the spark goes from tower to tower. repeat on remaining two packs. if the spark goes straight down the tower the coil needs replaced. if there is no spark, the coil needs replaced.

Put a code reader or scanner on it. Sounds like a Throttle Position Sensor or Bad Coil. The TPS is avail on line or at auto parts. You DO NOT have to replace the entire throttle body, if sensor fails. Coils are $51.00 or maybe less on line.

Start with replacing all the spark plugs. Then drive. If it happens again it's your coils. Don't buy them used, and it's honestly better to buy them online from a website like partstrain.com or ebay.com. Dealership wanted 119.00 a piece, plus labor. I got them online, all 8 for a little under 450 after shipping. And it takes about an hour to do it yourself. All I can say is be gentle when getting the coils/plugs out.

do as they say if it does not work go back to them

it sonds like you have a coil braking down if your engine light was on and it told you cylinder #5 i would replace that coil and spark plug make sure when you pull the coil out that it does not have oil on it if it does then you have a valve cover gasket leaking oil into the plug galley and you will need to replace that first.

Not sure if my situation helps or not, but here you go.....

I have a 2006 H3 that has 21,000 miles, last week my husband was driving and lost power, service engine came on, and it kept flashing stabilization problem. Called roadside assistance and had it towed to the dealership. Dealership said it was a dead battery and replaced it. Took the vehicle home and didn't drive for a couple of days. Drove again a couple of days later with no problems. 2 days later tried to start and vehicle had no power could not start at all. Called road side assistance and had it again towed to dealership. Dealership told us the main computer was bad and had to be replaced. We were told it is NOT a common problem, heres hoping we don't have any other issues with the vehicle.