Ignition interruptions in cylinders

The most common failure in ignition interruptions is poor contacts in the wiring harness connectors. Check the connectors. Check the ground. The polarity of the male connectors is wrong. The terminals of the male connectors are connected upside down. See picture. Some terminals may be “locked” if they are installed too deep into the male […]

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Car is jerking with cold engine

Ethanol is less flammable than gasoline, so the ignition problems can occur more easily when using ethanol. In some cars, a slight jerking during the first 5 minutes of driving is normal in cold weather conditions. If the spark plugs or ignition coils are defective or have reached full lifetime, small jerking can occur with […]

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Vehicle runs lean when refueled ethanol

Control unit is not on Vehicle can operate normally even when eFlexFuel control unit is not on. You should use only gasoline if this happens. Check wiring harness and all the connectors. Especially ground wire and red double wire. Check that ground wire is in ground place. Ethanol sensor is not in fuel line Ethanol […]

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