- Diagnostics Q5 locked
- Diagnostics Q5 locked
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Stevey Y started following 3.0tdi injector coding , Diagnostics Q5 locked , I need help with battery cables and 4 others
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What to do, poss head gasket?
Hi that would do it, the remap has possibly done the damage as the pistons on these EA111 engines have a weak point insomuch as increased boost pressure and fuelling cause the ring grooves to fail and bits fall off of the castings where the rings locate which is probably why you have compression failure, having spoken to my garage they reckon timing chain tensioners can fail anywhere between 40k-60k which probably explains why in a short time they phased this engine out and bought in an upgraded belt driven engine. Steve.
- I need help with battery cables
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Steering wheel Replacement
Hi you can't just swap the airbag module as the steering wheel originally fitted is completely different, an auto electrician could probably sort the wiring but the new wheel would need coding in and thats if you don't need another control module. Steve.
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What to do, poss head gasket?
Hi if its failed a sniff test its academic the gasket is leaking, I personally would do the same as the first garage if you take in to account that the head will most likely need a skim to correct any surface defects, then the valve seats would need to be lapped in, the timing chain is worth doing as even at 60k its probably stretched and the guides will be worn, factor in possible bore wear and you have the potential for a catastrophic wallet failure, from memory these engines were not good from new and if driven hard don't generally take to much action, you also mentioned improvements, one of them was not mapping was it? Steve.
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Faults following brake pad replacement
Hi I doubt the brake change caused this it could well be the update or the camera mounted in the screen. Steve.
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Flute whistle from after replacing PCV valve
Hi might well be with doing if the pressure slows down it may well be the valve, how many miles has the car done as around that year they are famous for burning oil where they used skinny oil control rings, problem is they let oil up but also down which pressurises the sump, fingers crossed its the aftermarket valve. Steve.
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Flute whistle from after replacing PCV valve
Hi are you sure the new valve has a diaphragm in it the worrying thing is the amount of pressure coming out of the valve. Steve.
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Head gasket?
Head gaskets would be a whole new world of wallet pain but your description was very precise giving no indication of system pressurising, looking forward to a glowing success. Steve.
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3.0tdi injector coding
Hi I don't think you have wasted your money, find another C7 and use the codes from that as far as I am aware the coding number is an acceptance code to let the ECU know its had a new unit, the injectors are all the same and once accepted will re learn their values very quickly. Steve.
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Head gasket?
Hi don't worry it only gets critical when you reach the level of a pint of water per pint of oil then the ends rattle and the valve gear rattles as there is not enough lubrication for the lifters, I am quietly confident it is no where near terminal, seen worse where its cooked the head and big end bearings, did a Vauxhall Astra a while ago, same problem but worse and two gallons of flushing oil and three filters its still doing a nightly commute to London no issues. Steve.
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Head gasket?
Hi just had a look on line and its a Barsteward inlets off and the worlds supply of crud underneath the unit which sits in the middle at the top, easy enough to get to but a multitude of Torx fixings, all different lengths for certain holes so you have to draw a map of what goes where and a murderous amount of new o rings, only reason I think this is the problem is lack of reassure from expansion tank therefore not head related and you water is being fed into the oil system which is not good for any bearing within the engine so it will need a double engine flush after fixing to clear it all out. Steve.
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Head gasket?
Hi not a job I have ever done on an Audi 3.0, done a 2.0 CNHA and that was a real drama, try YouTube and see if its within your pay grade, I thought the 2.0 looked fairly straightforward until I got stuck in and the amount of other stuff you have to remove to get at it was a major faff, loads of bungee cables attached to various panels to keep the pipe work and electrical cables at bay. Steve.
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Head gasket?
Hi most likely the oil cooler the gaskets are flimsy and as the water pressure is higher than the oil pressure it lets water in to the oil system quite cheap for an aftermarket unit but a sod to fit. Steve.
Stevey Y
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