Help needed
I am having an issue with my #1 cylinder missing after the car is warm, I get no codes for it but sometimes car goes into limp mode with a solid check engine light with the jumper jumped to read codes, turn the car off and turn it back on and it’s no longer in limp mode. Car has new timing belt, head gasket, spark plugs, distributor, and rotor in the distributor.
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Re: Help needed
Car? stock? mods?
What makes you believe cyl #1 is missing? Code zero indicates the ECU has a power or ground issue or is bad. |
Re: Help needed
Car is stock. I can pull injector plug or spark plug wire and it doesn’t change the way it runs. I don’t really know what ground to check other than possible battery ground. Trans ground looks to have never been taken off, and valve cover ground is fine.
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Re: Help needed
Originally Posted by muellersfan
(Post 51938327)
Car? stock? mods?
What makes you believe cyl #1 is missing? Code zero indicates the ECU has a power or ground issue or is bad. |
Re: Help needed
Originally Posted by muellersfan
(Post 51938327)
Car? stock? mods?
What makes you believe cyl #1 is missing? Code zero indicates the ECU has a power or ground issue or is bad. |
Re: Help needed
Do a compression check. and check the Injector on that cylinder. If there is no change when you take off the spark plug wire and its firing, then its either your compression or fuel on that cylinder.
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Re: Help needed
Originally Posted by linkdeezie
(Post 51938410)
Do a compression check. and check the Injector on that cylinder. If there is no change when you take off the spark plug wire and its firing, then its either your compression or fuel on that cylinder.
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Re: Help needed
Originally Posted by Clittle2670
(Post 51938396)
Car is stock. I can pull injector plug or spark plug wire and it doesn’t change the way it runs. I don’t really know what ground to check other than possible battery ground. Trans ground looks to have never been taken off, and valve cover ground is fine.
What year and engine does your car have. Automatic?? Vtec? Etc |
Re: Help needed
Check your valve adjustment. That cylinder could be slightly too tight and when cold function properly, but when the engine warms up, the materials grow and can push the valve open slightly losing compression in that cylinder creating the miss that you have described here.
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Re: Help needed
Originally Posted by Clittle2670
(Post 51938396)
I can pull injector plug or spark plug wire and it doesn’t change the way it runs.
Check whether Cyl 1 spark plug has bright white spark when the engine misfires. I don’t really know what ground to check other than possible battery ground. Trans ground looks to have never been taken off, and valve cover ground is fine. An intermittent poor connection in a wire harness connector affecting power or ground to the ECU would also throw code 0. |
Re: Help needed
Originally Posted by chrysler kid
(Post 51938524)
What year and engine does your car have. Automatic?? Vtec? Etc
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Re: Help needed
Originally Posted by JRCivic1
(Post 51938532)
Check your valve adjustment. That cylinder could be slightly too tight and when cold function properly, but when the engine warms up, the materials grow and can push the valve open slightly losing compression in that cylinder creating the miss that you have described here.
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