Troubleshooting an AFR gauge/sensor, l**Finally Figured out my issue** |
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Troubleshooting an AFR gauge/sensor, l**Finally Figured out my issue** |
jim_hoyland |
Oct 6 2015, 03:17 PM
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#1
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Get that VIN ? Group: Members Posts: 9,319 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
I installed the Innovate MTX L in 2012 and it worked fine until June of the year when it would go into the E8 mode. The techs say this means a faulty sensor. I replaced it and have continued to have erratic activity.
For example: it may run in an acceptable range for a while, then suddenly go to reading either too high or too low that are unreasonable; it sometimes freezes on a reading, and at other times it goes to E8.If I turn the ignition off and restart the engine, the gauge goes to a normal reading, then goes through the same routine. This sensor is 3 months old, car is in perfect tune. I changed the 12v power source, used a different ground, and recalibrated several times Anyone had experience troubleshooting these AFR's ? UPDATE_It was caused by contamination ! I have been adding MMO to my my fuel over the past year. When I ran out of MMO, I just ran straightgas without MMO. The AFR sensor reverted to normal operation and all is good. Interesting...you'd think the MMO would burn off or dissipate by the time it reached the exaust. Now I;m wondering if the MMO caused exhaust smoke upon downhill deceleration ? |
aircooledtechguy |
Nov 9 2015, 08:54 AM
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#2
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The Aircooledtech Guy Group: Members Posts: 1,966 Joined: 8-November 08 From: Anacortes, WA Member No.: 9,730 Region Association: Pacific Northwest |
I was getting big swings in the readings from my LC-1 AFR gauge recently and it would stick at a number, then go off-line and flash 7.4. Tried re-calibrating, free-air calibrating, nothing helped.
I swapped to a new sensor and BAM, everything works perfectly again. That was my recent experience. . . |
jim_hoyland |
Nov 9 2015, 09:44 AM
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#3
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Get that VIN ? Group: Members Posts: 9,319 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
I was getting big swings in the readings from my LC-1 AFR gauge recently and it would stick at a number, then go off-line and flash 7.4. Tried re-calibrating, free-air calibrating, nothing helped. I swapped to a new sensor and BAM, everything works perfectly again. That was my recent experience. . . Interesting, what goes wrong with those sensors ? Mine will work perfectly, than swing in readings, then stick on 22.4, then go to E8; if I restart the car, the AFR would work normally again ??? |
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