Problems with the turbo actuator are common on these, there is a solenoid valve down the back of the engine that operates the vacuum operated vane actuator. Faulty valves and pipe leaks are frequent. Overboost errors are usually due to turbo actuator problems. BigFatFlip. 3941 posts · Joined 2016. #2 · Aug 24, 2018. Ya, don't think you'll get much imput since not a lot of MY '18 owners around yet, but I'd imagine a few of the more common issues have been addressed: coolant loss due to HG, new revision dampers, etc. Follow for little RS update on Instagram: @BigFatFlip. 199. Name: Kevin. Ford Model: Fiesta Titanium Powershift. Ford Year: 2015. UK/Ireland Location: Devon. Posted May 1, 2016. If the recirc button is lit it means that no fresh air is coming into the car as the outside air intake is closed off, the air already in the car is just being recirculated round and round. 3. A quick video showing how I resolved the common problem of a wet interior on a Mk 11 (2nd Gen) Ford Focus Hatchback.Water was dripping from the top of the ta 1. Misfire. Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. A misfiring engine is one of the most common reasons your Focus will shake when accelerating. A vehicle’s ignition system consists of spark plugs, coil packs, and maybe plug wires. If it is an older model, it’ll have a distributor and coil Electrical System Problems of Ford Focus - part 1. Ford Focus owners have reported 1,082 problems related to electrical system (under the electrical system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Ford Focus based on all problems reported for the Focus. E.E. 826 posts · Joined 2014. #5 · Jan 31, 2018. The main serious problem with the ST is a piston or two breaking the rings and then self destructing. killing the motor. Nearly all the problems with this have been in cars with a programmed TUNE. or a aftermarket BOV (blow off valve) (not stock cars) Though at least two folks have reported Exhaust system: bad purge valve Fuel system: tank damage, malfunctioning fuel gauges Transmission problems x2EIwM.