P0172 & P0179 codes, Why?
#12
I will do that with the codes in the tune and clear the current codes and see what I get.
Originally Posted by off topic
The 80E still shifts too hard on the 1-2.
It also seems to have an issue with the 1-2 at WOT. I feels as if I hit the rpm limiter or the fuel cut-off but they are both set too high for that to happen. Between the 2 issues I'm almost ready to pull it and have a shop look at it.
It also seems to have an issue with the 1-2 at WOT. I feels as if I hit the rpm limiter or the fuel cut-off but they are both set too high for that to happen. Between the 2 issues I'm almost ready to pull it and have a shop look at it.
#13
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Originally Posted by 1SlowHoe
I will do that with the codes in the tune and clear the current codes and see what I get.
As far as the other stuff, is the 80 file a stock file? return everything to stock settings and start back from there.
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pm me a pic or something of your tranny tables, i have HPT so i can't look at your file, but if you could send me a pic of that table that would be great if i could look at that. you said that table is set "high" enough, if they are set to a "higher" mph then it will bounce off the rev limiter before it shifts.
#15
Hello Dave
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P0179 is your problem. Your fuel composition sensor is screwed up on the high side, presumably causing the PCM to think that you're running an 80+% ethanol blend. Since stoich for Ethanol is around 9:1, the PCM is targeting an AFR closer to that than 14.7. That's why you're running rich.
#17
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Originally Posted by dc_justin
P0179 is your problem. Your fuel composition sensor is screwed up on the high side, presumably causing the PCM to think that you're running an 80+% ethanol blend. Since stoich for Ethanol is around 9:1, the PCM is targeting an AFR closer to that than 14.7. That's why you're running rich.
#18
If its what I think it is, it was quoted at $800 the last time I asked about it (for a different reason). Cant I just turn that off in the tune? I'm never going to run e85 in the hoe. Or I'll figure out the impeadence and stick a resistor in the sensor plug to "Simulate"
#19
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You and me need to change fuel system, I wish my truck was flex fuel and you don't want it, I would think you could probable go though and disable everything in the tune and diagnostics for the flex fuel stuff and set all the ethanol tables in the tune to the same as there gas counter parts. Building a simulater would probable be pretty easy to if you wanted to go that way.