2000 Toyota Camry LE - A140E Trans Slip
Posted: Tue Oct 11, 2011 2:25 pm
Original Problem: customer had significant trani fluid loss and car would not shift very well, then one day gave out completely
Original Diagnostic: filled trani with fluid to proper levels, trani shifted as designed in all conditions; no DTCs
Conclusion: find and fix leak inside trani
Work: subbed the work to a very reputable local trani shop
What was found: shop found much of trani was shot due to extended driving with little to no fluid
Replaced: 1st & 2nd, and SL solenoids, all bands, and everything else
Test Drive: trani worked as designed, no problems
A week later/almost 500 miles since repair completion: customer complains that trani slips during excellaration
Diagnostic: could not duplicate problem, but DTC P0755 appeared
Work: checked all wiring according to Mitchell1 for diagnosing solenoids; all checked out within specs, no problems found, cleared code
A couple days pass: customer still complains of slipping
Test Drive: after an hour of hard agressive driving, was able to duplicate slip; slip was not consistant though
NOTE: vehicle needed to be well into normal operating temperature (NOT)
Diagnostic: no DTCs
Work: returned car to trani shop for second opinion and diagnostics; they could not duplicate slip; they did replace a half shaft seal at no charge
A couple days pass: customer returns again with car slips all the time, really bad, and there is trani fluid leaking on driveway
Test Drive: trani was slipping consistantly once at normal operating temp and at a regular pattern - from stop or low speed, tach between 2000 to 3000 rpm, shifter in "D" and "2"
Diagnostics: still no DTCs, visual fluid on bottom of trani case
Work: trani shop stated fluid leak as "Residule from shaft seal replacement." It took trani shop many attemps with different techs driving to finally duplicate slip; even with diagnostic computer attached during test drive, no codes and all solenoids functioned as designed; they suspected TPS and tried two new TPSs with no success in fixing slip; suggested possible fuel issues
Fuel Tests: pump and pressure remains steady and within specs according to live data during slip
NOTE: slip only occurs during very agressive driving and hard excelaration at NOT
So, can anyone give me some ideas as to what, where, and how to figure this out without having to once again dismantle the trani again?
Could it be a bad ECM?
Original Diagnostic: filled trani with fluid to proper levels, trani shifted as designed in all conditions; no DTCs
Conclusion: find and fix leak inside trani
Work: subbed the work to a very reputable local trani shop
What was found: shop found much of trani was shot due to extended driving with little to no fluid
Replaced: 1st & 2nd, and SL solenoids, all bands, and everything else
Test Drive: trani worked as designed, no problems
A week later/almost 500 miles since repair completion: customer complains that trani slips during excellaration
Diagnostic: could not duplicate problem, but DTC P0755 appeared
Work: checked all wiring according to Mitchell1 for diagnosing solenoids; all checked out within specs, no problems found, cleared code
A couple days pass: customer still complains of slipping
Test Drive: after an hour of hard agressive driving, was able to duplicate slip; slip was not consistant though
NOTE: vehicle needed to be well into normal operating temperature (NOT)
Diagnostic: no DTCs
Work: returned car to trani shop for second opinion and diagnostics; they could not duplicate slip; they did replace a half shaft seal at no charge
A couple days pass: customer returns again with car slips all the time, really bad, and there is trani fluid leaking on driveway
Test Drive: trani was slipping consistantly once at normal operating temp and at a regular pattern - from stop or low speed, tach between 2000 to 3000 rpm, shifter in "D" and "2"
Diagnostics: still no DTCs, visual fluid on bottom of trani case
Work: trani shop stated fluid leak as "Residule from shaft seal replacement." It took trani shop many attemps with different techs driving to finally duplicate slip; even with diagnostic computer attached during test drive, no codes and all solenoids functioned as designed; they suspected TPS and tried two new TPSs with no success in fixing slip; suggested possible fuel issues
Fuel Tests: pump and pressure remains steady and within specs according to live data during slip
NOTE: slip only occurs during very agressive driving and hard excelaration at NOT
So, can anyone give me some ideas as to what, where, and how to figure this out without having to once again dismantle the trani again?
Could it be a bad ECM?