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Q: Timing and cam phaser

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Took my 2008 expedition in had trouble, long story short had both can phasers replaced timing chain,adjusters,guides and timing gear sprocket replaced valve cover replaced due to a crack and regular maintenance FLUSH rear diff, power steering FLUSH, and fuel injection cleaned. Picked it up after 4 days ran great within 2 hours it had what seem to be a rough idol when at a complete stop, drives great just idols rough. Before repair you could barely feel it idoling at all, 3300 in repairs and now this....

My car has 124000 miles.

A: Hi there. Assuming, the cam phaser/timing c...

Hi there. Assuming, the cam phaser/timing chain component repair was properly performed. The rough idle within two hours of picking up the vehicle may be, something has come loose (ie; a vacuum line). The repair facility should be willing to take a look, I would think, at no charge. Assuming, the check engine light has not come on, leads me to believe, the PCM (powertrain control module)/computer has not recognized the fault. There are several possibilities for a rough idle. If, you receive no satisfaction at your repair facility. I recommend having your vehicle’s rough idle be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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