Engine running rough
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Joined: Feb 2013
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Engine running rough
On my V8 02 XLT Explorer the engine is running rough like it's missing.
I think a coil may have gone bad,,found a LOT of anti-freeze down in the spark plug hole.
Have replaced the intake but now need to fix the roughness.
Is there any easy way to check each coil? Or should I be checing something else?
Thanks
HF
I think a coil may have gone bad,,found a LOT of anti-freeze down in the spark plug hole.
Have replaced the intake but now need to fix the roughness.
Is there any easy way to check each coil? Or should I be checing something else?
Thanks
HF
Logistics Pro
Joined: Jun 2009
Posts: 4,819
Likes: 83
From: Cedar Rapids, IA
If you have a scan tool that can access pending diagnostic codes, there is probably a code for the cylinder that is randomly misfiring. But if a coil was swimming in coolant, there's a good chance it's been damaged.
Assuming you have a scan tool that can check pending codes, you could swap the suspect coil with another coil, reset the codes, then wait for the misfires again, check the codes, and see if the misfire followed the cylinder.
You won't want to run it too long with a misfire though as that could damage the catalytic converters.
-Rod
Assuming you have a scan tool that can check pending codes, you could swap the suspect coil with another coil, reset the codes, then wait for the misfires again, check the codes, and see if the misfire followed the cylinder.
You won't want to run it too long with a misfire though as that could damage the catalytic converters.
-Rod
Senior User
Joined: Aug 2013
Posts: 465
Likes: 21
On my V8 02 XLT Explorer the engine is running rough like it's missing.
I think a coil may have gone bad,,found a LOT of anti-freeze down in the spark plug hole.
Have replaced the intake but now need to fix the roughness.
Is there any easy way to check each coil? Or should I be checing something else?
Thanks
HF
I think a coil may have gone bad,,found a LOT of anti-freeze down in the spark plug hole.
Have replaced the intake but now need to fix the roughness.
Is there any easy way to check each coil? Or should I be checing something else?
Thanks
HF
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