Jump to content
SAU Community

Recommended Posts

Hey all. I've got one of these fitted to my car. It's been fine. Just the other say I've noticed it's reading seems about lower. It's idling on about 11.0 when it used to idle at about 12 to 13. Cold start reads 10.0. It seems off. Is this normal? would you suspect the wideband or something actually affecting afr's? It's about 3 months old mounted in the stock o2 sensor location.

Link to comment
https://www.sau.com.au/forums/topic/392231-aem-uego-seems-off/
Share on other sites

Ill need to get it on a dyno. Just found my car idling with injector duty at 1.0% dropping to .9% then back up to 1.0%. Its odd because it always used to sit at .8% to .9%. Something is throwing out the tune. I have no idea how to clean the AFM so until I can rule out everything else, I'm going to leave the AFM alone for now. Tomorrow Ill pressurize the intake and listen for leaks. If I find none, ill erase the tune, self learn then reflash my tune. If no change, ill set the car on fire. If no change ill clean the AFM.

What would I clean the AFM with? I am thinking after driving back from work just now that it might be something else as the car was flopping a little when I clutched in to about 500rpm. Since I last tested the intake, there were no leaks. I am running a custom metal intake with stock BOV plumbed back and facing away from the AFM(pointing down the 90degree bend towards the turbo.

There was nothing I done which caused the sudden change. The last thing I did was actually heat wrap the dump but that was a while ago and the problem was only noticed a couple of days ago(I keep my eye on the afr's every now and then and it just seemed out of the ordinary).

Edited by SargeRX8

I made a post about this in the Wideband thread in the FI section; I think I have the same or similar problem. My UEGO reads around 10-11 on idle and 12's/13's while cruising, sometimes lower. I'm 99% sure it's not the tune though, as the car drives exactly the same as always and there is no way I'd still be getting 550kms to a tank if my cruise AFR's were 12's. So I think it is either the sensor that has failed, OR there is a bad connection somewhere.

I haven't got around to pulling out the sensor or checking connections yet, so I'll let you know what I find when I do.

I'll get it out tomorrow make sure everything is nice and tight. Pretty unfortunate if it is the sensor. Only a couple months old ffs. I wish I bought the innovate unit which can be calibrated when it reads off.

I'll try everything to see if slowly something makes a difference. It reads 10.0 on cold start, that is the lowest reading the unit can display. If that was the case I should be fouling plugs in the 9.x region...

After alot of reading about installation locations, I decided to fit it in the standard location where the thing normally goes. I don't think this should cause the unit to fail after 2000km of use... People have had theirs on their cars in that location for years Ive read with still consistent readings. Car doesn't get a hard time. I'm never constantly giving it stick. Maybe to overtake or just a little squirt here and there but nothing out of the ordinary. You can tell I drive like a bitch when after 1.5 years and about 30000km of driving, my kuhmo tires were on 70% lol and they came on the car.

Edited by SargeRX8

Maybe you should go give it a thrash and see if that helps. There might be a carbon buildup on the sensor or something. Alternatively pull it out and have a look at it. See what reading you get when its in freash air

Mine has been fine since I put it in about 6 months ago. Reads exactly how the wideband did on my dyno run and the wideband used when it was first tuned.

But mine is in the suggested install location right about where the gearbox crossmember is

Where did you earth the gauge to? I dont think that will be the problem but check the earth is O.K anyway

Fresh air I think it will fire all the way to lean, it does it when the ignition is on. Is there anything I can spray on it to clean it or is that not an option? Ill try take it for a little push later get some heat on it to try clear and burn off some of the carbon. Can't remember where I grounded it but Ill double check it.

Is there enough room for it to face the right way when you mount it under the car? Did you point it straight down or from the side.

no you dont.... you'd be on your 3rd unit by now :rolleyes:

What a load of crap, I have been running my innovative for over two years on the same sensor and it still reads perfectly, they obviously fixed any issues with them a long time ago. I even bought one cheap, ($50) from the for sale section and got it working again, then modified it with a USB input.

Its been a good unit, if a little too fast in reacting according to my tuner. He would prefer to have the output smoother while tuning but I can only set it up for 1/3 second refresh max in the software.

Fresh air I think it will fire all the way to lean, it does it when the ignition is on. Is there anything I can spray on it to clean it or is that not an option? Ill try take it for a little push later get some heat on it to try clear and burn off some of the carbon. Can't remember where I grounded it but Ill double check it.

Is there enough room for it to face the right way when you mount it under the car? Did you point it straight down or from the side.

mine points slightly up and in (just about hits the gearbox crossmember) but its about where the instructions say to put it

Contact cleaner would probably be alright if you unplugged the sensor, cleaned it and let it sit for a few mins before putting it back in. Probably just better to take it for a thrash but, I dont think contact cleaner would worry it but just in case

What a load of crap, I have been running my innovative for over two years on the same sensor and it still reads perfectly, they obviously fixed any issues with them a long time ago. I even bought one cheap, ($50) from the for sale section and got it working again, then modified it with a USB input.

Its been a good unit, if a little too fast in reacting according to my tuner. He would prefer to have the output smoother while tuning but I can only set it up for 1/3 second refresh max in the software.

yer some of them are fine, but theres plenty of people (myself included) with several dead innovate units, through no fault of the end user a lot of them seam to have internal circuit failures, bad solder joints etc.

in open air it should rear around 20-21:1

Yeh the UEGO maxes at 18.5.

It will go to that in open air though. To test it, spray some brake cleaner on a cloth and cover cover the sensor with the cloth. It should go full rich to 10 and stay there. If it goes back to lean then it's stuffed.

Edited by Hanaldo

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
    • So, now all you need to do is connect the 2 or 3x 12v feeds into the unit to permanent 12v, ACC 12V and IGN 12V that you can find in the spot behind the stereo, and the earth, and then it will switch on with the car.
×
×
  • Create New...