What happens if a coil pack goes bad on a Grand Cherokee?
These packs are fired by the engines computer at exactly the right time to provide the optimal ignition timing. If a coil pack goes bad, it’ll cause a misfire and rough idle condition. Really, your Grand Cherokee will be running rougher at any RPM, but a misfire will be most pronounced at idle.
What causes a Jeep Grand Cherokee to idle rough?
Here are the most common problems that would cause a Jeep Grand Cherokee to idle rough: Here are the main components of the ignition system, as well as what would cause them to make your Grand Cherokee idle roughly.
When does a car have a rough idle?
November 27, 2017. It’s easy to tell when your car has a rough idle: When you start the engine, it won’t run at a steady rate. It may almost stall, or it may run at varying RPMs without your putting your foot on the gas, or it may do both.
Why is my 5.3 L missing and rough idle intermittently?
5.3 L Missing and Rough Idle Intermittently I have changed Spark Plugs,Wires ,Coil Packs, and removed Fuel Injectors and soaked overnight. Engine code is a P0304. Misfire Cylinder #4. Most of the time around town is alright. When i put it on highway, it will surge like its cutting off and then pick right back up and be fine. Fuel Presure is 55 psi.
These packs are fired by the engines computer at exactly the right time to provide the optimal ignition timing. If a coil pack goes bad, it’ll cause a misfire and rough idle condition. Really, your Grand Cherokee will be running rougher at any RPM, but a misfire will be most pronounced at idle.
Here are the most common problems that would cause a Jeep Grand Cherokee to idle rough: Here are the main components of the ignition system, as well as what would cause them to make your Grand Cherokee idle roughly.
How to tell if your ignition coil is bad?
Symptoms of a Bad or Failing Ignition Coil 1 Engine misfires, rough idle, and loss of power. 2 Check Engine Light comes on. 3 Car is not starting.
5.3 L Missing and Rough Idle Intermittently I have changed Spark Plugs,Wires ,Coil Packs, and removed Fuel Injectors and soaked overnight. Engine code is a P0304. Misfire Cylinder #4. Most of the time around town is alright. When i put it on highway, it will surge like its cutting off and then pick right back up and be fine. Fuel Presure is 55 psi.