|
|
Mar 15, 2014 21:03:30 GMT
|
Hi guys , I have an issue with my corsa b c16se lump.
put a new manifold on and a new o2 sensor all was well until about after 20 minutes of driving the eml comes on, I have read the codes it is pointing to the lambda coming up with the code 13 (which is telling me = Oxygen sensor No change in voltage/open circuit. )
the wiring seems to be fine but could the new lambda be at fault? as I stupidly didn't buy a bosch or ngk one.
what would you advise? pointing to the lambda has anyone else had these issues with cheapish lambdas? I am indeedly kicking myself now .
|
|
|
|
|
|
|
Mar 16, 2014 14:13:41 GMT
|
just replaced it with a ngk item, still comes up with this code?! after about 20 minutes of driving when the engine reaches temp, can anyone help?
|
|
Last Edit: Mar 16, 2014 14:14:02 GMT by slammage
|
|
|
|
Mar 16, 2014 14:23:41 GMT
|
wiring "seems to be fine" isn't really good enough, you need to buzz it through properly.
|
|
|
|
tuner
Part of things
Posts: 62
|
|
Mar 16, 2014 14:36:14 GMT
|
Test it! not difficult if 4 wire will have 1 black 1 grey and 2 white wires white wires are heater circuit unplug sensor and connect multimeter to white wires from ecu side of plug should read battery voltage ignition on ,reconect plug and test black wire voltage should fluctuate between 0.1 -0,9v engine running will switch faster when temp over 75 = 80 deg
|
|
|
|
|
|
Mar 16, 2014 14:42:57 GMT
|
its a 1 wire lambda sensor I will see if I can find my multimeter, will have a hunt now it worked fine before old saying if it aint broke.....
|
|
|
|
bobman
Part of things
Posts: 109
|
|
Mar 16, 2014 16:03:07 GMT
|
If there's only one wire its fairly easy to test the wire, and to test the plug on the sensor while its running, just ground the other probe on the body or clean metal and it'll show if the sensors dead
|
|
|
|
taurus
Posted a lot
Posts: 1,084
|
|
Mar 16, 2014 16:51:18 GMT
|
On the basis that they're a feedback system half the time (more really) it's not the sensor at fault but something making the sensor go our of parameter. Any exhaust leak will do the same - have you checked the new manifold isn't leaking anywhere?
|
|
|
|
|
|
Mar 16, 2014 20:48:57 GMT
|
On the basis that they're a feedback system half the time (more really) it's not the sensor at fault but something making the sensor go our of parameter. Any exhaust leak will do the same - have you checked the new manifold isn't leaking anywhere? the sensors defiantly fine me and the old man were just out with the multimeter , idling it sat around 0.2 and when revved it went to around 0.7/0.8 the sensors fine. taurus imm glad you have replied ! ive just checked there seems to be a leak from around the join of the centre section and cat, I will re seal this tomorrow but would that cause this issue? will be checking the complete system and sealing every joint. cheers guys will update hopefully with good news.
|
|
|
|
taurus
Posted a lot
Posts: 1,084
|
|
Mar 16, 2014 20:53:01 GMT
|
Strange as it might seem even a leak after the sensor can cause it to show issues. The other thing I wondered was if anything (like sealant) had contaminated the sensor, but you've tried two sensors so I wouldn't think that would be the case. Sometimes silicon sealants can cause Lambda sensors to go dud, again sometimes even sealant downstream of the sensor position.
|
|
|
|
|
|
Mar 16, 2014 21:36:13 GMT
|
well I will see tomorrow mate, will double check the exhaust manifold gasket, and seal all other joins .
|
|
|
|
|
|
|
Mar 17, 2014 11:55:12 GMT
|
made no difference but I did have a butchers at the system it may seem the brand new flexi has had enough, as the car is awfully loud all of a sudden and with no leaks anywhere on the joins or system, the flexi pipe has the typical exhaust black stains at each end.
Its right after the manifold as well, so this could be chucking the o2 sensor readings out by my guess? its hard to feel if any exhaust fumes are coming out as I on my own atm(need someone to rev the engine while I am underneath checking it), but the noise is from there and the black staines...it is all pointing to that?!
|
|
Last Edit: Mar 17, 2014 11:59:46 GMT by slammage
|
|
taurus
Posted a lot
Posts: 1,084
|
|
Mar 17, 2014 21:44:59 GMT
|
That sounds like a strong possibility. It probably gave up the ghost when you did the manifold. On idle shove a damp rag into the tailpipe, that will show up if the flexi is leaking.
|
|
|
|
|
|
Mar 17, 2014 22:35:10 GMT
|
its either that or I'm reverting back to the stock cast manifold and just tucking it u so it doesn't catch speed humps! just for reference the lambada is here ( only picture I have where the bung is under the sump, its using a 90 degree adapter as well) only thought is maybe its too close to the sump?
|
|
Last Edit: Mar 17, 2014 22:35:39 GMT by slammage
|
|
RobinJI
Posted a lot
"Driven by the irony that only being shackled to the road could ever I be free"
Posts: 2,995
|
|
Mar 17, 2014 23:23:19 GMT
|
The 90deg adapter will more than likely be the issue. The sensor may not get a true reading as it's not in the direct path of the gasses. This is particularly important with it being a non-heated sensor, as it'll need direct contact with the hot exhaust gas to get up to temperature and work. The EML's probably coming on because the car thinks the sensor's had long enough to warm up, but because the reading's still not right it's saying it must be broken, when really it's probably just cold.
I'd be looking to get a new sensor bung welded on somewhere that won't need the adapter for sure.
|
|
|
|
|
|
|
think I'm going to the scrapyard and getting another cast manifold and set up, previous one rotted out and threads stripped hence this 4 branch but it doesn't feel as torquey with the 4 branch as it did with the cast unbelievably ! what a shame but guess this is a learning curve.. i.e don't mess about with something that previously worked fine / don't improve something that's already pretty good!
|
|
|
|
taurus
Posted a lot
Posts: 1,084
|
|
|
Ah - didn't know it wasn't a stock replacement manifold. I'm sure Robin's right about that being an issue, especially if it's also leaking as well.
|
|
|
|
RobinJI
Posted a lot
"Driven by the irony that only being shackled to the road could ever I be free"
Posts: 2,995
|
|
Mar 18, 2014 19:34:07 GMT
|
You may well find the torque drop's down to the car not knowing what the mixtures doing, as the lambda sensor's not doing it's job. I very recently had to replace a dying lambda in my Scirocco and besides the MPG going curse word it was the around town grunt that had noticeably dropped off, it didn't like light throttle openings in high gears.
|
|
|
|
ChasR
RR Helper
motivation
Posts: 10,194
Club RR Member Number: 170
|
faulty new o2/lambda sensor?ChasR
@chasr
Club Retro Rides Member 170
|
Mar 18, 2014 23:45:28 GMT
|
I would be looking at the 90 degree adaptor myself. You may not need another manifold, simply to put the sensor in the line of exhaust gases somewhere more suitable.
|
|
|
|
|
|
Mar 21, 2014 18:44:02 GMT
|
well all is fixed, removed that rubbish elbow adaptor and the flexi put a pipe there with a lambda boss relocated the lambda there and no issues, still doesn't feel as torquey as it used to ( maybe I'm just too used to the power..) but no hesitation anymore or no eml! time for a full service cheers for the help as per usual guys
|
|
|
|
|
|
Mar 21, 2014 19:44:27 GMT
|
well I say this the eml came on briefly while cruising in 4th gear , promptly chucked it in 2nd booted it and its gone away.. same code as before related to o2 sensor but I guess its just got used to it etc? didn't used to go way before but it did just then. sorted I hope :/
|
|
|
|
|