Problem Description and Possible Solution
Ignition coil failure may cause the engine to run poorly. The fault can be intermittent and may or may not illuminate the Check Engine Light.
Problem DataRepairPal Verified
Average mileage: 109,296 (15,700–344,854)
Engines affected: 3.0L V6, 4.0L V8, 4.2L V8, 4.2L V8 Supercharged
50 people reported this problem
I keep getting a engine coil misfire on #5. I had the coils and the plugs change but it wont go away. it's running very sluggish. when i warm my car up when its cold outside it sounds like my engine is whistling......SOMEBODY HELP
Engine misfiring. Replaced all spark pugs and coils, yet no resolve. Any suggestions are greatly appreciated. Thank you.
Engine fault light on. Misfiring sound when cold. Can't accelerate quickly without the engine shuddering. If acceleration is steady it'll go at full speed without an issue. Concerned this will be dangerous in emergency situation. A mechanic diagnosed coil issue and I had ALL the coils replaced. The problem returned within a few months, now different mechanic (at Jag dealership because field tone didn't want to touch it again) has diagnosed same issue - coil fault on cylinder 5. I don't want to repeat exercise in a few months again. They can't tell me WHY it the coil would be faulty.
Same problem keep getting misfire codes from different coils. I have replaced the coils and still get misfire codes. I am now getting a P0420 Catalytic Converter code.
My 2000 Jag S-Type started cutting out really bad. I took it to the repair shop and had it put on the engine analyzer which stated I had a misfire on #2 cylinder. Coil and plugs were replaced. It is still doing the same thing.
I HAD TO REPLACE MY IGNITION COIL. IT IS WAS ACTUALLY SIMPLE TO DO BUT THE DEALERSHIP WAS GOING TO CHARGE A ARM AND LEG TO REPAIR. I ORDERED A NEW IGNITION COIL AND REPLACED IT MYSELF. IT IS AS SIMPLE AS REPLACING A SPARK PLUG.
Valve cover gasket leaked oil into spark plug wells shorting out the ignition coils. Gasket and ignition coils had to be replaced.
car is missing intermitantly
Ive had this problem twice now with all coils.
I purchased a 2002 S Type in 2004 with numerous problems but 12/2007, the replacements and repair: 1. Excessive vaccum leakage; replaced upper & lower intake gasket (12 parts); upper & lower elbow hose & spark plugs (6);elbow breather & tube
2. Valve covers leakage; replaced all coils (6)
When I start it up it be popping, and sounds like it's going to shut off,
same issue misfire number 3 cylinder
Engine running rough repaired coil #2 and spar plug
misfire at idle and rough at 40-50 mph. replaced plugs no change, bought coil to troubleshoot no change when I went through all coils
engine missfires , need to replace the Ignition Coils . I had replaced some a few months ago
I had the same problem ignition coils 1 and 5. But my car runs great what sum mechanics dont kno is the diagram and numbers of where the coils are located. Also when replaceing the coils replace the spark plugs as well with platinum or double platinum. They last longer!!!:-)
Misfire cutbacks mostly on inclines
Misfires. 8 spark plugs needs to be replaced and coil #5
I still have the problem because I need a second opinion I was told this will cost $2,700.00, has anyone else had this problem and if so what was the cost of repairs.