4298 posts · Joined 2009. #12 · Oct 30, 2020 (Edited by Moderator) There was a problem on early MK3's built in the last quarter of 2012 blowing a piston due to a manufacturing defect which Ford were replacing the short block under warranty. A bad fuel pump, ignition problems, clogged fuel filter, bad mass airflow sensor, and bad crank/camshaft sensors are just a few of the problems that can cause an engine to not start. 5. Poor Shifts. The transmission may have a hard time shifting, or not even be able to shift at all. Conclusion: Ford Focus Bad PCM Symptoms Ford focus 1.5 ecoboost 182 st-line x 2020 automatic Hi, I Have the same problem. The message “gear selected will engage at low speed” appeared on my car’s screen, when I changed D to R and at the same time there was a strong vibration-shock in the car gearbox. Drives. RS/Mk2 GTi. 21 Dec 2020. #4. Its likely a loose/damaged hose, maybe even damaged intercooler, most can be handy got to with the lower front grill off and undertrays. I had the same issue on mine a few years back, “ESP system fault” appeared on the dash and no boost, it had split a weld on the intercooler. My ST3 of less than 6 months old and less than 4000 miles (Ocean Blue not Performance Blue) has a problem. When I go to start the car after a period of rest, it will turn over for ages trying to kick in before it eventually starts up, however if I turn the key to start it, turn it off straight away, then back on again (if you know what I mean 122 posts · Joined 2011. #1 · Apr 28, 2012. looking at getting an ST but wondering about the common alternator failure problem, now does it just break and leave you stranded or does it just play up and need replacing soon? as doesnt sound fun waiting for it to just die and leave you stranded somewhere, its happened before on another car. xr5-gaz. 7 posts · Joined 2020. #18 · May 13, 2020. The valve is a diaphragm. Vovlo and Ford only sell it as a complete oil filter housing. You can get the diaphram on its own online, its also a good time to check all rubber hoses. There is also a check valve on the turbo inlet, this is the high pressure (when your on boost) side of the system. Just had the exact issue on my 2014 MK3 ST common issues where the washer pump connector/pump leaks and causes washer fluid to travel the engine bay wiring harness and straight in to the BCM. New BCM direct from ford was £230 and then unfortunately I couldn’t program this myself due to not having dealership level access to program both key App Vay Tiền Nhanh.

ford focus st mk2 common problems