Here are some common symptoms that hint towards having a bad VVT switch: 1. Rough engine idle. Proper ignition timing is crucial to ensuring that your engine runs smooth and efficient. When the vehicle is under load, the VVT switch will monitor the engine and send information to the computer to adjust the valve timing as needed. Well after cleaning the EGR valve unit Ford Model: 1.8 TDCI Mk2 Focus Ford Year: 2006 UK/Ireland Location: Dorset Share; Posted February 8, 2017. Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle. ===END IC DTC U1900-20=== ===PDM DTC B166A-60=== Code: B166A - Heated Mirror Circuit Open Status: - DTC Present at Time of Request - Malfunction Indicator Lamp is Ford Focus Mk2 1.8 TDCi running problems. I'm getting all these symptoms bar the Diesel splatters on my 2006 Fiesta 1.6 TDCi. It's just hit 116K and i've read this could be EGR valve needs However, I have a bit of an issue with accelerating on my Ford Focus 1.8 Zetec 2008 reg (diesel) with a duratorq engine. If I rev quickly (and need an increase of airflow quickly), the car tends to get a flat spot about 1800-2100RPM between gears 3-5 when under load only (when on an incline - there is no problem when driving flat or downhill MOT,it makes your emission output improve.what the egr valve does is recirculates the exhaust gasses back through the engine which are dirty,making the engine combust crappy air and anyone with a brain can see that's no good for a car.not really sure what the point of it is to be honest.so blocking it off prevents that,making it use cleaner air FORD S-MAX MK1 FL CD340 EGR VALVE FAST POSTAGE 964568970. FORD GALAXY MK3 S-MAX MONDEO MK4 2.0 TDCI EGR VALVE 2007-2010 GK59. Exhaust gas return valve EGR for TDCi 1,6 85KW C16DSOX Ford S-Max WA6 10-14 (Fits: Ford S-Max) FORD S-MAX 2.2 2006-2010 2.2 EGR COOLER (Fits: Ford S-Max) Buy Ford Car EGR Valves for Ford S-Max and get the best deals at Name: James. Ford Model: Sea Grey Mondeo MKIV 1.8TDCi 140ps Zetec. Ford Year: 2007. UK/Ireland Location: Kent. Posted September 23, 2013. I had both, a cacked out EGR and a split intercooler pipe. I have the CMAX auto ('7 speed' gearbox in essence) and had the same sort of issue, where the car was hesitant around the 60 mark at low revs, the I suspect that it might be a clogged EGR-valve, but my car has only done 60.000 miles. I live in Norway, so my car came with a auxiliary heater, but the heater has not been working for almost a year. Can the heater have anything to do with it? It's a 2007 Focus 1.8 Tdci Titanium, btw, if this is relevant in any way. For the avoidance of doubt I've highlighted the EGR on the pic supplied by Iantt. I recently cleaned the EGR on the 1.8 Duratec (MK2.5) which is basically the same engine, one of the bolts is an absolute "bar steward" to get to, even with the large rubber coolant hose removed. kHvVTt.