Stevey Y

Hi being as you omitted to give if your car is petrol/diesel, if its diesel it might bee a boost pipe has split.

Hi yes it needs adaptation. Steve.

If you get it scanned for faults that will give you the answer, no good guessing the car will tell you what you need to know.

Hi no the only time it will struggle to start is in cold weather but generally speaking they will start anyway when the plugs are knackered because the fuel rail pressure is so high. Steve.

Hi was this what happened with the old unit, only reason I thought of the direction is that if its pumping against the natural flow that would lock it up but when you test it if there is no natural flow the unit will appear to operate as normal.

Hi not wishing to appear stupid but is the pump the right way round as it should have a flow arrow on it. Steve.

Hi might be worth bleeding the circuit as any air in the system will cause it to stop pumping as it registers pressure when it is working and will go to default [stop when no pressure is sensed], if you get the same temperature fault back on the MAF its knackered. Steve.

Hi both codes are glow plug related and I think the fuel rail pressure sensor fitting was coincidental to the problem you have now.

Hi don't think there is one as both items report back to the ECU with pulse signals, with regard to the pump you fitted [not that I ever changed one] is there anything on VCDS for adapting the new unit?, from the rest of your posts I would lean toward the MAF failing again, have you tried re adapting the MAF.

Hi I had the same a couple of years ago with four clutch master cylinders all failing within a couple of months, finally bought a genuine LUK unit from ECP and that cured it, I think in an effort to make money they have been buying cheaper elsewhere to bump up profits, I don't blame you for getting rid, I was heartbroken when my one terminated itself back in January when the electronic handbrake let go and it rolled into a brick wall, l have now bought a VW Passat nice and simple as it doesn't throw up a light for every event, brilliant on diesel and adblu the bonus being any new quality branded parts are about a third of the price, example Brembo pads and rear discs £105 the set, the Audi was over £200 for the discs and another £70 for the pads, done 10k since beginning of Feb and then Passat has not missed a beat. Steve.

Hi I would leave the pump at the front that is an auxiliary pump that only works in excessively hot weather when the vehicle is stopped it pumps coolant around the circuit to stop the red hot coolant from cooking the cylinder head, worst ways just clean its connections with contact cleaner.

Hi P2002 is the low pressure EGR cooler have a look on the site archives this is well documented the cooler gets blocked with adblue crystals and fails its a horror to replace its not the parts so much as the labour charges, the other one is the MAP sensor which is cheap and easy to change.

Hi yes can be fixed and yes thy are connected, new glow plugs required, I would get a delete kit for the swirl flaps inside the inlet manifold and see if that cures the boost pressure control unit on the turbo if not you may well need a new turbo. Steve.

Hi the MAP sensor has no facilities to measure air temperature as it is the same as the DPF sensors it measures barometric pressures, the two air temperature readings come from the MAF and the Air charge temp sensor, these compare the air temperature going in, the MAF, and the temperature of the air going in to the manifold as the compressed air from the turbo is somewhat hotter than the air going into the MAF between the two they work out what is acceptable within the boundaries of its strategy limits, as for the pump is it the aluminium one to the R/H side of the engine bay, if you could post a picture that would be helpful, only one other question when you replaced the MAF was it an oe Bosch unit as I tried two much cheaper aftermarket MAFs and both failed in short order, ended up buying Bosch again and that cured my problems. Steve.

Hi if you have filled it up get the level reset that normally cures the problem. Steve.

Hi the hose idea wont work as tap water has a much higher surface tension than rain water, so borrow a watering cans worth out of a neighbours water butt or use distilled water. Steve.

Hi this is a diagram of the throttle assembly the Air Intake Temp sensor is number 12

Hi the AIT sensor is bolted in to the throttle body and is a different element completely the map sensor wont measure temperature, but you could try taking the AIT sensor out and cleaning it as they do get coated and wont read properly

Hi the best place to look would be in your owners book or online. Steve.

The only other thing I can think of is the low pressure EGR valve butterfly is clogged and may be slightly open, they are monitored but wont throw a code unless stuck completely, did you check the pipes were clear before fitting new sensors.

Hi black smoke is due to over fuelling, the high MAF reading is due to the ECU trying to combat the extra fuel with more air, so you either have a leaking injector or the car has been remapped at some point. Steve.

Hi if you tape over it the thing will work all the time as it works on opacity so the more its blocked the harder it works, this is quite a common problem on A4/A6 2012 up and is usually down to a cruddy control stalk on the steering wheel which is why there are so many second hand units for sale, you have to replace the whole unit which is a bit of a mission especially when you replace it as if you have not placed the squib ring in dead centre the steering goes bananas, try cleaning it with contact cleaner first. Steve.

Hi I would suspect an air leak the other side of the MAF, also check the MAP sensor and the DPF sensor I had the same on my car and ended up changing both MAP and DPF sensors to cure this as the EGR was staying open when and allowing gas recirculation when you were trying to clog it in higher gears when it needs the maximum amount of fresh air, what diagnostic reader are you using as anything other than VCDS/OBD Eleven wont necessarily flag any codes, before I bought new sensors I had already changed the EGR valve which was pretty much mint because of the design it only gets hot exhaust gas and no recycled crankcase gas because that gets fed in further down the stream only to discover it might be a blocked pipe to the MAP/EGR sensors, no blockages so it had to be the sensors, don't ask why because they all communicate with each other and I never found out what wasn't working, took me ages playing chase the ace, all part of the wonderful Ultra technology and a very complex engine management software. Steve.

Hi Steve yes indeed lipsticks are available on eBay my daughter buys them a lot. Steve.

Hi if you take the bar off and run the holes through with an oversize drill bit the two parts should come apart as the top and bottom plates are held together around the bolt holes, but before doing this measure the roll bar itself with a vernier caliper to see which size bush you need as there are three different sizes, also pay attention to the other shape of the new bush so its the same, they are going to be murder to fit but do not lubricate the inner part of the bush and use washing up liquid on the outer part, once on the bar the new bushes can be coaxed into the upper part of the metal mounting using a piece of wood either side and a large G clamp this should get it far enough in so when you put the base plate on bolting it up should pull it in the rest of the way, unless you have the facilities to grind off the old captive nuts you will need longer bolts and new nuts. Steve.