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Q: Van chugs at highway speeds

asked by on

My van has approx. 220,000 miles. It chugs when I’m driving 45 mph and chugs intermittently at higher speeds. I have already replaced the spark plugs and also the wires. In your professional experience, what is the problem and what would be the fix?

A: When you say &quot;chugs&quot; I&#39;m not ...

When you say "chugs" I'm not sure if you mean hesitation or misfire, or just loss of power. But let's hit on some of the basics. I recommend checking for any diagnostic trouble codes that may be set in the computer (PCM). Fuel pressure should be checked and compared to specifications. Other possibilities are a fuel pump that is dying, a faulty throttle position sensor (TPS), or a failing PCM can cause the symptoms you are experiencing. If you want to have this checked, a certified mechanic, such as one from YourMechanic, can come to your car's location and diagnose your vehicle's hesitation or misfire issue and let you know what needs to be repaired.

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