01 XJ8 Coil Packs
#1
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Any way to test the coil packs? I have codes reading bad coil pack #4 and #7. I have removed the packs and checked the plugs. The plugs look new. I just purchased the car and i'm trying to check everything. I also have codes saying knock sensors and crankshaft position sensor, to name a few. I have read on the forum that the knock sensors could be a bad connection. If this is true, I will try to check the connections. I need help!!
#2
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Georgia:
Just a thought. These cars are known for voltage sensitivity in the ECU- Weak batteries are blamed for everthing from ABS modules faults (valid) to gas mileage (???), and some of these claims are probably valid. With your new alternator, I would reset the codes, then wait a few days before finishing your campaign, since Jag parts are pretty expensive.
Just a thought. These cars are known for voltage sensitivity in the ECU- Weak batteries are blamed for everthing from ABS modules faults (valid) to gas mileage (???), and some of these claims are probably valid. With your new alternator, I would reset the codes, then wait a few days before finishing your campaign, since Jag parts are pretty expensive.
#4
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#6
#7
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Ok. Been driving for a day and no codes so far. Still have the miss. Also have another problem, possibly related to the battery problem I posted. The car does not start all the time. I have a new battery in it and yesterday it was fine. Today, no start condition. Appears to be a weak battery again because I am getting some messages about check rear lights and transmission fault. It did this when I had the old battery in it. Any ideas????
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