AEM AFR Issues??

[RobertTrivanovic]

Recently my AFR started to stick a bit (its digital) and now it doesnt work at all, its always just reads 14.7-14.8 now, at every RPM range... And believe me its not actually running that all around that is just my idle AFR. The sled was running really rich all around for a while there so im thinking I might of messed the sensor up by running so fat. Is there any way to clean the sensor or anything like that or do I just need to buy a new sensor and lean the thing out so I dont do it again?

 

[m8magicandmystery]

clean it with brake clean...

do you have the 2stroke heat sink for the probe..??

is the probe mounted at ten or two oclock at the fat part of the pipe with a very slight lean towards engine..

was the index mark on probe facing the right direction..??

 

[RobertTrivanovic]

Well its a turbo so its mounted a little ways after the turbo ... Ill post a pic tomorrow of where it is.

And heres where I sound stupid.... What do you mean by a 2 stroke heat sink? And what index mark... I just kinda screwed it in didnt know it was indexed...

 

[m8magicandmystery]

well im going by my koso,but it is my understanding the others are indexed as well..it should be a dot or some sort of depression on the sensor that faces the incoming flow..and different thickness washers to achieve the right direction,much like indexing spark plugs years ago.

And the heat sink is just a spacer between the probe and pipe that collects and concentrates the heat abit better.

And one thing that really works with my koso,which most people indicate they DO NOT need to do with their other brand afr is I put a toggle in the power wire and I usually don't flick it on till the warm up is done and smoke clears and as well when the koso has a little brain fart I flick it on and off when running to clear it up and this prevents me from having to shut the sled off and restart

 

[manlye]

That is the safety mode of the gage check you ground, it will default to 14.8-14.7 with a bad ground. Also check your plugs in the back of the gage they can crack hence giving you a shaky ground.


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[RobertTrivanovic]

well im going by my koso,but it is my understanding the others are indexed as well..it should be a dot or some sort of depression on the sensor that faces the incoming flow..and different thickness washers to achieve the right direction,much like indexing spark plugs years ago.

And the heat sink is just a spacer between the probe and pipe that collects and concentrates the heat abit better.

And one thing that really works with my koso,which most people indicate they DO NOT need to do with their other brand afr is I put a toggle in the power wire and I usually don't flick it on till the warm up is done and smoke clears and as well when the koso has a little brain fart I flick it on and off when running to clear it up and this prevents me from having to shut the sled off and restart

Yeah I do have a heat sink, ill look for the dot tomorrow.

That is the safety mode of the gage check you ground, it will default to 14.8-14.7 with a bad ground. Also check your plugs in the back of the gage they can crack hence giving you a shaky ground.


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Thanks Ill give it a look!

 

[BigFish BC]

iam guessing you are running race fuel or av gas in your turbo,if so you have prob killed sensor with lead.if you run race or av you need to get some dealin runup to put in your fuel it will save the sensor.

http://www.aircraftspruce.ca/catalog/appages/Decalin.php

 

[RobertTrivanovic]

iam guessing you are running race fuel or av gas in your turbo,if so you have prob killed sensor with lead.if you run race or av you need to get some dealin runup to put in your fuel it will save the sensor.

http://www.aircraftspruce.ca/catalog/appages/Decalin.php

Honestly running straight 91, sled is at 8psi I can pull it off. Ran 2 bottles of octane booster through the sled since the season started, so most rides it was just straight 91 with absolutely nothing in it.

 

[Snopro_69]

Probly the sensor. Sometimes a get few more rides after cleaning with brake clean. But I CAN NOT keep a sensor in mine running straight 100LL. Run egts for back up. Sick of spending hundreds on 4 sensors a season. Could be the way the proclimb exhaust turns hard 90' straight down (after turbo outlet) an only place you can put the sensor is right on the corner where the exhaust hits with most velocity. Also run the 2 stroke bung. Then my buddy with an M with it right before the Cpc turbo muffler starts hasent wrecked on in two seasons on same fuel.

 

[RobertTrivanovic]

I only have about 400km on this gauge... Thats a pretty quick death of the sensor if you ask me, specially since im running pump gas. Ill try to clean it, make sure its facing the right direction if there even is a direction, and check all my wiring for shorts. Guess ill probably be buying a new sensor pretty quickly here

 

[Cpt.Ron]

Decaline

We stock Decalin Run up additive for those that require it. Reduces the lead build up on 02 sensors, hence increases the live expectancy of same.

Cheers