Question about 3X3 atf change
10-17-2017
#31
If you think a good mechanic is expensive, try hiring a bad one
Re: Question about 3X3 atf change
10-17-2017
#32
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Re: Question about 3X3 atf change
Is it possible the factory has just become misadjusted? It is functioning, just not correctly reporting a closed throttle. It's voltage output is a smooth, steady rise as I open the throttle valve, it just never drops below about 2.5 vdc.
10-17-2017
#33
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The BARO code is still present. I wonder, does the ecu use IAT, MAP, RPM and throttle position to calculate a barometric pressure value and compare it to the BARO sensor within the ecu? If so, that may explain the baro fault code. I'll find out when I replace the sensor, or when Ezone let's me know the ecu isn't That smart 
I'll be back after the new tps is installed. BTW, I stopped at the junkyard just for grins. The TB was the same price as a new sensor, so I picked up a 2 pin male to make a trouble code plug hard loop instead of stealing all the old lady's Bobby pins and I got the 3 pin connector from the tps and map sensors to make it easier to test the sensor side. Free.99 Thank you junkyard checkout dude.
I'll be back after the new tps is installed. BTW, I stopped at the junkyard just for grins. The TB was the same price as a new sensor, so I picked up a 2 pin male to make a trouble code plug hard loop instead of stealing all the old lady's Bobby pins and I got the 3 pin connector from the tps and map sensors to make it easier to test the sensor side. Free.99 Thank you junkyard checkout dude.
10-17-2017
#34
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Question about 3X3 atf change
There's a few youtubes on TPS testing and adjusting.
Last edited by Wankenstein; 10-17-2017 at 06:20 PM.
10-17-2017
#35
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Amazing what havoc the tps can wreak on drivability!
All better now. Danger Zone tps dialed into .495vdc at idle and about 4.45 or so at wot.
All seems back to normal. Park lock solenoid back to normal, all ecu codes gone, drivability back to normal or better, BARO code gone, etc.
Thank you Ezone and Mega for the insight and tips. Thank you live data scan tool for showing me the tps signal was AFU. I would have been chasing perceived problems a lot longer had it not been for you guys and the proper diag. tool.
SactoCivic
All better now. Danger Zone tps dialed into .495vdc at idle and about 4.45 or so at wot.
All seems back to normal. Park lock solenoid back to normal, all ecu codes gone, drivability back to normal or better, BARO code gone, etc.
Thank you Ezone and Mega for the insight and tips. Thank you live data scan tool for showing me the tps signal was AFU. I would have been chasing perceived problems a lot longer had it not been for you guys and the proper diag. tool.
SactoCivic
10-17-2017
#36
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Question about 3X3 atf change
Amazing what havoc the tps can wreak on drivability!
All better now. Danger Zone tps dialed into .495vdc at idle and about 4.45 or so at wot.
All seems back to normal. Park lock solenoid back to normal, all ecu codes gone, drivability back to normal or better, BARO code gone, etc.
Thank you Ezone and Mega for the insight and tips. Thank you live data scan tool for showing me the tps signal was AFU. I would have been chasing perceived problems a lot longer had it not been for you guys and the proper diag. tool.SactoCivic
All better now. Danger Zone tps dialed into .495vdc at idle and about 4.45 or so at wot.
All seems back to normal. Park lock solenoid back to normal, all ecu codes gone, drivability back to normal or better, BARO code gone, etc.
Thank you Ezone and Mega for the insight and tips. Thank you live data scan tool for showing me the tps signal was AFU. I would have been chasing perceived problems a lot longer had it not been for you guys and the proper diag. tool.SactoCivic
10-17-2017
#37
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Much, much better now! Just finished cleaning the car, my mess and myself and went for a drive. The tranny shifts a little more smoothly than it used to, and at wot on the highway it holds each gear longer than it used to. Around town it feels better too. Everything seems back to normal.
I was paranoid there for a bit because the tps decided to give up immediately after I changed the atf, and with it refusing to shift below 5-5.5k rpm, I could hear my dad's voice in my head, "if it ain't broke, don't fix it"!
Fortunately all those symptoms were the tps telling the car the throttle was at least 50% open All the time. Who knew the ecu wouldn't let you shift out of park if your foot was on the gas and brake at the same time? Though I've never tried to do that before, it now seems like a good safety feature, until the tps malfunctions and you need a screwdriver to get out of park
230,000 mi on the clock, atf fluid, tps, plugs, and a few other things have been done. Next up is a head gasket and crank oil seals. It leaks a little oil on the ground and a little combustion gas into the overflow bottle
Again, thanks everyone for the time and assistance! I think I'm all done sweating for now!
I was paranoid there for a bit because the tps decided to give up immediately after I changed the atf, and with it refusing to shift below 5-5.5k rpm, I could hear my dad's voice in my head, "if it ain't broke, don't fix it"!
Fortunately all those symptoms were the tps telling the car the throttle was at least 50% open All the time. Who knew the ecu wouldn't let you shift out of park if your foot was on the gas and brake at the same time? Though I've never tried to do that before, it now seems like a good safety feature, until the tps malfunctions and you need a screwdriver to get out of park
230,000 mi on the clock, atf fluid, tps, plugs, and a few other things have been done. Next up is a head gasket and crank oil seals. It leaks a little oil on the ground and a little combustion gas into the overflow bottle
Again, thanks everyone for the time and assistance! I think I'm all done sweating for now!
10-18-2017
#38
If you think a good mechanic is expensive, try hiring a bad one
Re: Question about 3X3 atf change
Is it possible the factory has just become misadjusted?
And if it did, then the max sensor WOT voltage would no longer be 4.5v.
So strike that theory.
Sensor failure. Replace.
I wonder, does the ecu use IAT, MAP, RPM and throttle position to calculate a barometric pressure value and compare it to the BARO sensor within the ecu? If so, that may explain the baro fault code. I'll find out when I replace the sensor, or when Ezone let's me know the ecu isn't That smart
The ECM compares the MAP and BARO sensors during certain periods of wide open throttle. So if your TPS is screwy and the PCM starts checking the sensors when conditions aren't really as it expected, then you get false BARO code.
Amazing what havoc the tps can wreak on drivability!
All better now. Danger Zone tps dialed into .495vdc at idle and about 4.45 or so at wot.
All seems back to normal. Park lock solenoid back to normal, all ecu codes gone, drivability back to normal or better, BARO code gone, etc.
Thank you Ezone and Mega for the insight and tips. Thank you live data scan tool for showing me the tps signal was AFU. I would have been chasing perceived problems a lot longer had it not been for you guys and the proper diag. tool.
SactoCivic
All better now. Danger Zone tps dialed into .495vdc at idle and about 4.45 or so at wot.
All seems back to normal. Park lock solenoid back to normal, all ecu codes gone, drivability back to normal or better, BARO code gone, etc.
Thank you Ezone and Mega for the insight and tips. Thank you live data scan tool for showing me the tps signal was AFU. I would have been chasing perceived problems a lot longer had it not been for you guys and the proper diag. tool.
SactoCivic
So the TPS is the culprit for all the problems.....
Yea a good scanner in the hands of some people is a code reader....and wheel chock.
The same scanner can be a very valuable tool in the hands of someone who is willing to learn and understand what it shows.
Who knew the ecu wouldn't let you shift out of park if your foot was on the gas and brake at the same time?
10-18-2017
#39
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Question about 3X3 atf change
There's differing opinions on this when it comes to ATF changes. Some say on high mileage cars it's not worth the risk to do an ATF drain and fill (and certainly not a machine flush) if the last D&F service is unknown, never performed, or more than 70k miles. https://www.google.com/search?q=risk....0.4yhlc6LUp1I
Well, since you can't do rear wheel smoking tires burnouts/doughnuts in a front wheel drive car I guess Honda engineers figured they would penalize anyone who tries it.
10-18-2017
#40
If you think a good mechanic is expensive, try hiring a bad one
Re: Question about 3X3 atf change
Flushes with chemicals can hurt the trans.
Simple drain and fill won't hurt anything that wasn't already a problem in the first place.
Fluid breaks down with time/miles/heat and needs to be replenished. Failure to do this just speeds up the eventual demise of the trans.
Most of the motoring public never thinks about trans service until AFTER it starts acting unusual or completely wrong....and by that time it's usually too late.
Jizzy Lube places write those disclaimers to cover their asses after the freshly serviced yet severely neglected transmissions with problems finally fail completely and the idiot owner tries to blame (sue) the last one to touch it.
Last edited by ezone; 10-18-2017 at 10:49 AM.
10-18-2017
#41
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Question about 3X3 atf change
I didn't create that internet opinion..just posted a link to them.
Last year I did get a scare while changing ATF on my daughters then '02 Solara. Foolish me thought I wouldn't have to replace the filter if I just disconnected the atf return line and let it pump out (engine on) while I added new. A previously bad hard shift turned into a abnormal delayed shift. I ended it up doing a proper D&F (has a differential drain bolt too) including filter replacement and it shifted smooth for a few days and then reverted back to hard shifts but abnormal delay was no longer present. She sold the car soon after.
Last year I did get a scare while changing ATF on my daughters then '02 Solara. Foolish me thought I wouldn't have to replace the filter if I just disconnected the atf return line and let it pump out (engine on) while I added new. A previously bad hard shift turned into a abnormal delayed shift. I ended it up doing a proper D&F (has a differential drain bolt too) including filter replacement and it shifted smooth for a few days and then reverted back to hard shifts but abnormal delay was no longer present. She sold the car soon after.
10-18-2017
#42
If you think a good mechanic is expensive, try hiring a bad one
Re: Question about 3X3 atf change
A previously bad hard shift
.........
back to hard shifts
.........
back to hard shifts
I didn't create that internet opinion..just posted a link to them.
It originates from the disclaimers that JizzyLube places make people sign before doing a trans fluid flush, which the lawyers dreamed up strictly to avoid having to pay for endless transmission repairs. This is strictly a legal issue. It has no basis in real mechanical function and maintenance.
Take it one step further....many vehicle manufacturers these days don't even recommend servicing their transmissions until 100,000 miles, or even longer (some even claim 'lifetime' fill).
Since that's far beyond the opined 70k miles, should fluid service never ever be completed as per the manufacturers' maintenance schedule?
New fluid > old dirty worn out contaminated fluid.
10-18-2017
#43
OF top 99.5% creator (Formerly of the Puffinblunts variety)
Re: Question about 3X3 atf change
LOL.
Yes. That comes up in the discussions as well.
Take it one step further....many vehicle manufacturers these days don't even recommend servicing their transmissions until 100,000 miles, or even longer (some even claim 'lifetime' fill).
Since that's far beyond the opined 70k miles, should fluid service never ever be completed as per the manufacturers' maintenance schedule?
New fluid > old dirty worn out contaminated fluid.
Since that's far beyond the opined 70k miles, should fluid service never ever be completed as per the manufacturers' maintenance schedule?
New fluid > old dirty worn out contaminated fluid.
10-18-2017
#44
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I do a Lot of test and troubleshooting work in the communications industry for a living and understand the importance of being patient and methodical when approaching a problem, I just don't have any experience with the civic itself, though I've worked on cars as a hobby for a long time.
Again, thanks to everyone for the assistance and the comedic relief
Thanks Ezone for your help and experience.
Methodological approach works like magic, as usual
10-18-2017
#45
If you think a good mechanic is expensive, try hiring a bad one
