Truck wont accelerate spits sputters when turning headlights on

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Truck runs and drives fine when lights are off turning lights on and then it spits sputters won't accelerate

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Jun 7, 2020

1 Reply

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DaveJMon Jun 7, 2020

Hello, I can't make much sense of this, other than to say that something that causes a voltage drop in the vehicle resulting in an engine performance issue could be illustrating weakness in the electrical system - starting with the engine's 12 volt battery, or the charging system with the alternator as the key component here. Testing of the battery would be first - ability to charge fully and handle a load, and then also the charging system's ability to recharge the battery while the vehicle is operating.

Bamasashon Jun 7, 2020

Let me ask this could it be a ground problem some where couse alternator is working properly i checked it and done a load test on the battery it tested fine

DaveJMon Jun 9, 2020

No, I don't see it being a ground problem on its own. Have you checked the charging system -- voltage and amperage? Under load and at 2,000 RPM of engine speed?

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