Post by badadd84 on Jun 25, 2024 18:55:30 GMT
Evening All - Mk7 R, manual, 2015
Stage 3 for several years now and absolutely love my car. It gets driven approx. 2k miles per year.
For a year or so now, I have had a lumpy / rough idle, both cold and hot. Originally, I scanned the car with another OBD tool, which revealed a 16401 code, "crankshaft / camshaft position correlation sensor B Bank-1", no other errors. Knowing full well the camshaft adjuster magnets are a common fault, asked my independent garage, to change both, clear errors, and no more errors when scanning.... but the lumpiness came back circa 1k miles, however, no errors with VCDS or other OBD tools.
Since then, I have had the car thoroughly checked with my local VW specialist and also, my tuner and so far we have:
The car remains with no errors, however, today I invested in OBDeleven. Reasoning being, this seems to be far superior to my other tool - really loving it so far!
No errors, but I can get the car to misfire using the misfire counter on OBDeleven, on cold, but its inconsistant. Upon cold start earlier, waited one minute, then blipped the peddle to 2k, let the revs drop back down to 1k, then boom, 10 misfires counted, x6 on cylinder 2, x4 on cylinder 3. No errors when scanning, no EML lights, nothing...
Still thinking it could be the camshaft magnets & further digging and I was led to believe that by monitoring "camshaft adjustment, exhaust, bank 1, actual value" & "camshaft adjustment intake, bank 1 actual value", this may help me identify if the magnets are faulty (can anyone confirm this?). I have a reading of:
After this, I took the car out for a good blast, 20 mins, and managed to get "Numb.of misfir., cylinder X"
1 - 34 misfires
2 - 1 misfire
3 - 1 misfire
4 - 6 misfire
I am at my wits end!
Questions so far:
Thank you in advance!
Stage 3 for several years now and absolutely love my car. It gets driven approx. 2k miles per year.
For a year or so now, I have had a lumpy / rough idle, both cold and hot. Originally, I scanned the car with another OBD tool, which revealed a 16401 code, "crankshaft / camshaft position correlation sensor B Bank-1", no other errors. Knowing full well the camshaft adjuster magnets are a common fault, asked my independent garage, to change both, clear errors, and no more errors when scanning.... but the lumpiness came back circa 1k miles, however, no errors with VCDS or other OBD tools.
Since then, I have had the car thoroughly checked with my local VW specialist and also, my tuner and so far we have:
- Changed PCV
- Changed spark plugs
- Changed coil packs
- Cleaned and tested injectors, graphite seals fitted - flow rate all fine, then...
- Replaced injectors with new
- Compression test (all fine)
- Inlet manifold gasket
- Lambda sensor
- List item 2
- List item 3
The car remains with no errors, however, today I invested in OBDeleven. Reasoning being, this seems to be far superior to my other tool - really loving it so far!
No errors, but I can get the car to misfire using the misfire counter on OBDeleven, on cold, but its inconsistant. Upon cold start earlier, waited one minute, then blipped the peddle to 2k, let the revs drop back down to 1k, then boom, 10 misfires counted, x6 on cylinder 2, x4 on cylinder 3. No errors when scanning, no EML lights, nothing...
Still thinking it could be the camshaft magnets & further digging and I was led to believe that by monitoring "camshaft adjustment, exhaust, bank 1, actual value" & "camshaft adjustment intake, bank 1 actual value", this may help me identify if the magnets are faulty (can anyone confirm this?). I have a reading of:
- Exhaust 0.0
- Intake fluctuates between 14,9 and 15.8 on idle
After this, I took the car out for a good blast, 20 mins, and managed to get "Numb.of misfir., cylinder X"
1 - 34 misfires
2 - 1 misfire
3 - 1 misfire
4 - 6 misfire
I am at my wits end!
Questions so far:
- Can anyone suggest anything?
- Does anything jump out to you with the above?
- Does anyone know the correct parameters I should be looking at to see if my magnets need replacing?
Thank you in advance!