Help. Installed new thermostat running worse than it was

Asked by Nov 10, 2016 at 07:46 PM about the 2001 Ford Expedition XLT

Question type: Maintenance & Repair

Installed new thermostat in My Expedition and now
it's running worse than it was. Any ideas

1 Answer

35,035

The thermostat has nothing to do with how the car runs. I suspect you have bad coils. Is the check engine light on? If so get the codes read.

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