eps/epc errors and a fix....
Posted: Sat Oct 05, 2013 7:27 pm
So...
a short version of a long story
so I was getting misfires on cylinders 6/7/8 in my s6, and an o2 sensor error. main symptoms were the car running a little lumpy when at idle every now and then, and every so often, esp/epc lights, and limp mode. I was also getting a throttle angle sensor fault on the 1-5 bank side
So I decided to sort it out starting with the easiest things. Changed out the coilpacks on 6/7/8 (they were originals, but audi Ireland disavow all knowledge of a recall so it probably needed to be done, but after a few days, was still getting the o2 sensor error.
luckily enough it was the pre-cat sensor for bank 3, which is easily accessible from underneath the car, so ordered one up and changed it out.
This fixed the rumble at idle, but then I got a "lean mix" error on that bank. So took a look, and as I had installed 2 new K&N filters quite recently, pulled out the MAF and gave it a quick clean with the traditional ziploc bag of isopropyl alcohol. there was quite a lot of oil coming out the bottom of the filter, so i am guessing it was the usual K&N over oiling thing.
popped the MAF back in, and so far all is well (and for good luck, cleaned the one on the other side too). Also ran a throttle body adapt on each TB as well.
The TB error seemed to come and go, so I popped that off too, and opened up the electrics pod on the side of it. The TB itself had a good scrub a few weeks earlier, and I cleaned all the electrical contacts with contact cleaner, and gave the brushes a little tweak up as well to make sure that there was good contact.
popped it all back in, and all seemed well for a week or so. then, after hitting a bit of a speed bump, got the code back again. when I got to where I was going, I took a look, and just pushed on the TB plug so make sure it was seated etc. it wasn't loose, but the car ran fine for another while. then another bump, then a repeat.
having a look around on the topic of throttle bodies (mine seemed to be ok from my quick inspection and a quick continuity check), came across this link - http://forums.audiworld.com/showthread.php?t=2825836 and on the back of it, ordered up a new plug, and a set of wires ( 1 x 1J0-973-713 for the plug) and 5 wires which give you 10 ends if you split them - 000-979-131-E (and they come in a 5 pack, so it might be worth your while to buy the 5). some soldering and shrink wrap later, and it has at least gone away for the moment so here's hoping.
so there you go
and I thought my old c5 rs6 was interesting
but so far I have to say I am quite enjoying my s6.
t.
a short version of a long story
so I was getting misfires on cylinders 6/7/8 in my s6, and an o2 sensor error. main symptoms were the car running a little lumpy when at idle every now and then, and every so often, esp/epc lights, and limp mode. I was also getting a throttle angle sensor fault on the 1-5 bank side
So I decided to sort it out starting with the easiest things. Changed out the coilpacks on 6/7/8 (they were originals, but audi Ireland disavow all knowledge of a recall so it probably needed to be done, but after a few days, was still getting the o2 sensor error.
luckily enough it was the pre-cat sensor for bank 3, which is easily accessible from underneath the car, so ordered one up and changed it out.
This fixed the rumble at idle, but then I got a "lean mix" error on that bank. So took a look, and as I had installed 2 new K&N filters quite recently, pulled out the MAF and gave it a quick clean with the traditional ziploc bag of isopropyl alcohol. there was quite a lot of oil coming out the bottom of the filter, so i am guessing it was the usual K&N over oiling thing.
popped the MAF back in, and so far all is well (and for good luck, cleaned the one on the other side too). Also ran a throttle body adapt on each TB as well.
The TB error seemed to come and go, so I popped that off too, and opened up the electrics pod on the side of it. The TB itself had a good scrub a few weeks earlier, and I cleaned all the electrical contacts with contact cleaner, and gave the brushes a little tweak up as well to make sure that there was good contact.
popped it all back in, and all seemed well for a week or so. then, after hitting a bit of a speed bump, got the code back again. when I got to where I was going, I took a look, and just pushed on the TB plug so make sure it was seated etc. it wasn't loose, but the car ran fine for another while. then another bump, then a repeat.
having a look around on the topic of throttle bodies (mine seemed to be ok from my quick inspection and a quick continuity check), came across this link - http://forums.audiworld.com/showthread.php?t=2825836 and on the back of it, ordered up a new plug, and a set of wires ( 1 x 1J0-973-713 for the plug) and 5 wires which give you 10 ends if you split them - 000-979-131-E (and they come in a 5 pack, so it might be worth your while to buy the 5). some soldering and shrink wrap later, and it has at least gone away for the moment so here's hoping.
so there you go
and I thought my old c5 rs6 was interesting
but so far I have to say I am quite enjoying my s6.
t.