Quote:
Originally Posted by Thumper
Keep in mind that although this is technically not an EFI failure (the EFI controller), the temperature sensor is a peripheral input that EFI needs to operate. So if it fails, particularly if it is a transient/periodic failure, it is a diagnostic problem. There are more than one check engine light or transient EFI failure on this site! They are electronic devices, and they do have issues.
Maybe it takes some time to learn how to tune a carburetor, but they typically do not catastrophically fail. You can get home to figure it out.
And the fuel pump is another Achilles heal for an EFI system. A carburetor works on vacuum and gravity (fuel feed), neither of with can fail.
Also, Once you become familiar with your carb settings (which jets, needle height, etc), diagnostics become routine (float bowl fill circuit, general cleaning, rejet for modification).
So EFI may be convenient when it works, but I don't think it is easier to diagnose when it fails, and it does.
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On the EFI models you can turn the key on then off twice, then on the third turn leave the key on and the check engine light will flash a code. It wasn't an issue of diagnostics really, more of an issue of finding a new AITS.
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