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Jaguar
S-Type
85

Ignition Coil May Cause Misfires and Check Engine Light on Jaguar S-Type

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 Data
RepairPal Verified
Average mileage: 108,516 (15,700–344,854)
Engines affected: 3.0L V6, 4.0L V8, 4.2L V8, 4.2L V8 Supercharged
6 model years affected: 2000, 2001, 2002, 2003, more2004, 2005
85 people reported this problem
Comments
Viewing 1 - 20 of 40 comments
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 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.
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
Valve cover gasket leaked oil into spark plug wells shorting out the ignition coils. Gasket and ignition coils had to be replaced.
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)
Engine started missing and the check engine light came on. I took it to the dealer and the Diagnosis was codes P0308. Coil Failure. P0105 followed SSM37459. Replaced #8 coil. Programmed ECM. Performed Injection clean.
Definitely a problem with the engine misfiring. Had an e-check done a couple of weeks ago and it failed. Gave me a print out of test results and it was missing on 2 cylinders. So I dropped it off for an oil change and they could not figure out what the problem was. However, I've read where the ignition coil is the culprit. What would the chance be for that to be the primary issue? And what would be the cost?
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!!!:-)