"dogisbadob" (dogisbadob)
10/12/2015 at 15:40 • Filed to: None
1
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"dogisbadob" (dogisbadob)
10/12/2015 at 15:40 • Filed to: None | 1
| 6 |
I tried swapping coils, and the code did not transfer to the new cylinder. So that rules out the coil as the issue, although coil failures are common in these cars.
I also replaced the spark plug on cylinder #4 with the exact same plug.
The good news is that cylinder 4 is in the front, and replacing the front fuel injectors isn’t too bad.
Twingo Tamer - About to descend into project car hell.
> dogisbadob
10/12/2015 at 15:48 |
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Check the wiring running to the coil on that cylinder. I’ve had a broken wire give the same symptoms as a failed coil. They can get brittle and fatigue after a long life in a hot engine bay.
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dogisbadob
> Twingo Tamer - About to descend into project car hell.
10/12/2015 at 15:53 |
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The coil connectors actually failed in my old car. They were brittle pieces of shit!
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Twingo Tamer - About to descend into project car hell.
> dogisbadob
10/12/2015 at 15:54 |
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Yeah it’s quite a common problem, ditto the wiring for the injector too, that could also cause your issue. Crimping in a new wire is much cheaper than injectors or coils.
TrickJos
> dogisbadob
10/12/2015 at 15:57 |
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Sounds like you’re checking all the right things. Inspect the wiring to the coil and the injector. Check associated grounds.
I banged my head against the wall for weeks over a misfire in our Beetle. Random misfires in all four cylinders. Turned out that the ECU’s ground connection had become corroded. Not badly corroded, just a little discolored. Measured about three ohms between the ground point and the chassis. Cleaned it up and it was well below an ohm. Problem solved. Cars/electronics are weird. Good luck.
brianbrannon
> dogisbadob
10/12/2015 at 21:02 |
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Unplug the cam sensor and see if the misfire goes away. If it does then you have a skipped timing chain
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dogisbadob
> Twingo Tamer - About to descend into project car hell.
10/12/2015 at 21:42 |
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The wires look perfect.
The last time I needed to replace wires, they were obviously fried.