Ford F Check Engine Light Fuel Consumption

Woah, sounds familiar! I drive a Ford F too, though I'm not sure about the year. I had something similar happen, check engine light and the car was guzzling gas like crazy. Could be a defect in one of the camshaft solenoid valves or power supply not available, but I'm no mechanic. Is your timing chain okay?

Timing chain sounds expensive... How did you figure out the camshaft solenoid valve thing? And what ended up being the fix for you?

I didn't figure it out myself, that's for sure! Took it to a workshop, they ran some diagnostics and pointed me to the camshaft solenoid valve. Given your symptoms, it might be worth getting it checked professionally. I ended up paying around 250€ for the whole thing (parts & labor). Could be VANOS failure, so don't wait.

Thanks! I'll take it to a trusted workshop. Appreciate the insight and heads-up about the VANOS, will mention it. It seems like a defect in one of the camshaft solenoid valves was the problem!