Could it be an ignition coil?
Mar 23, 2023 at 3:04 PM
Engine begins to misfire after warming up?
2009 TOYOTA COROLLA
SBROWN0903
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Hi,
It certainly could be a coil. It also could be several different things. For example, a failing crankshaft position sensor, a fuel pressure issue, a partially clogged catalytic converter, an engine vacuum leak, and so on.
By chance, have you had the computer scanned to narrow down the location of the misfire? If you haven't, I suggest it.
Here is a link explaining how it's done:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
If you don't have a scan tool, most parts stores will do it free of charge. Have that done and let me know what is found.
In the interim, here is a link that explains how to locate a vacuum leak. Take a look through it and check under the hood to see if you see anything disconnected or damaged.
Let me know.
Joe
It certainly could be a coil. It also could be several different things. For example, a failing crankshaft position sensor, a fuel pressure issue, a partially clogged catalytic converter, an engine vacuum leak, and so on.
By chance, have you had the computer scanned to narrow down the location of the misfire? If you haven't, I suggest it.
Here is a link explaining how it's done:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
If you don't have a scan tool, most parts stores will do it free of charge. Have that done and let me know what is found.
In the interim, here is a link that explains how to locate a vacuum leak. Take a look through it and check under the hood to see if you see anything disconnected or damaged.
Let me know.
Joe
Mar 23, 2023 at 6:44 PM
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