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: 9,308 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 ? |
era vulgaris |
Oct 7 2015, 06:59 AM
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#2
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J is for Genius Group: Members Posts: 982 Joined: 10-November 13 From: Raleigh, NC Member No.: 16,629 Region Association: South East States |
I've got the Innovate MTX-L, and it does this also. Here's what I've found:
The gauge worked fine after I bought the car last winter. In the spring, when ambient temps started changing, it began doing exactly what you describe. I didn't have time at that time to mess with it, so I lived with it. By summer, when the large swings in ambient temps were gone, the problem disappeared with it. The gauge worked fine all summer. Then a couple weeks ago as the ambient temps started changing again, the problem re-appeared. I'm going to do nothing again, and see if it disappears by winter. I think the gauge doesn't like large swings in ambient temps. The E8 issue is a common problem with the MTX-L. I've read a lot of threads on many different car forums about it. I've read about many people wasting money buying new sensors. The only real fix seems to be to buy a better quality gauge. Otherwise just live with it until it goes away on its own. |
jim_hoyland |
Oct 7 2015, 08:18 AM
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#3
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Get that VIN ? Group: Members Posts: 9,308 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
The E8 issue is a common problem with the MTX-L. I've read a lot of threads on many different car forums about it. I've read about many people wasting money buying new sensors. The only real fix seems to be to buy a better quality gauge. Otherwise just live with it until it goes away on its own. Thanks for that , it confirms my thoughts on this products issues. What would you recommend as a replacement ? |
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