2000 Toyota Camry LE - A140E Trans Slip

Specific repair issues for Toyota + Lexus vehicles
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premierautohandling
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2000 Toyota Camry LE - A140E Trans Slip

Post by premierautohandling »

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?
David Abbott, Owner
Premier Auto Handling, LLC
Colorado Springs, CO 80922
david@premierautohandling.com
http://www.premierautohandling.com
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brianp87
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Re: 2000 Toyota Camry LE - A140E Trans Slip

Post by brianp87 »

The P0755 code is a mechanical malfunction code, like a sticking shift solenoid, valve body or transmission problem. The ECM uses various inputs, like the vehicle speed sensor and the crankshaft position sensor, to detect actual gear position, and the ECM compares actual gear position with commanded gear position. The ECM applies voltage to the shift solenoids to turn the solenoids ON and takes voltage away to turn the solenoids OFF. The ECM applies this voltage in various sequences command the shifts. Shift solenoid 1 should be ON and shift solenoid 2 should be OFF for 1st gear. Both shift solenoid 1 and shift solenoid 2 should be ON for 2nd gear. Shift solenoid 1 should be OFF and shift solenoid 2 should be ON for 3rd gear. Both shift solenoid 1 and shift solenoid 2 should be OFF for 4th gear (overdrive).
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steven kiser
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Re: 2000 Toyota Camry LE - A140E Trans Slip

Post by steven kiser »

perfect example of why on high mileage vehicles with transmission failure due to fluid loss i will not venture into any major repair or rebuild. i only will recommend a jasper reman or if jasper doesn't make it an o.e.m. now you own it. obviously the owner drives it hard and now since the transmission tanked and was resurrected with a repair it's now your issue. the trans shop is going to remain neutral and the customer isn't happy. it tanked because of loss of fluid. it's been my experience that once the leak is repaired and it's still not acting correctly the transmission is junk.
never argue with a fool, they'll drag you down to their level and beat you with experience
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