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Advice on Another 55r5e acting up .
Kids Ranger is 2000 4.0 4x4. Tranny was rebuilt 18,000 miles ago. Changed fluid, filter and flushed cooler and lines 3,000 miles ago.
Shifts fine and smooth thru lower gears but started to rev really high in overdrive climbing gradual grades 5-6k on tach. Not consistently, only intermittently. yesterday at a light while in drive truck rolled back and would not go. Put in 2nd to get thru intersection. Stopped checked fluid, all good. Put back in drive and drive and shifted fine till overdrive. Would not shift into overdrive while on hwy. 60 mph 3k on tach. Overdrive light started flashing. Gonna pull codes tonight. Can bands being out of adjustment cause this? Should I drop pan and check filter? Fluid is clean and not burnt….Thanks! |
Welcome to the forum
Unfortunately it reads like one of the one-way clutch(sprag) is failing, OD or Low sprag Disengaged when in D but reengaging in 1 or 2 is a sign of that In D the coast clutch is not used just the sprag, coast clutch is used in 1 or 2 so gets you moving and then you can usually shift to D Here is a read on what is what in the different gears: https://atracom.blob.core.windows.ne.../2003_5_50.pdf 4R and 5R are the same transmissions internally, 5R engine computers just have the option of turning on OD while still in 1st gear giving you a faux 2nd gear for smoother shift, in the 4R the engine had to REV higher before shifting Shift solenoid 3 is activated for the faux 2nd and then for OD, but not for Manual 2nd selection on shfter Do you still feel the 2nd, 3rd and then 4 gear shifts when in D, or is it skipping "2nd", i.e. 1st to 3rd and then to 4th Codes will tell you if its a solenoid issue, but doesn't read that way, also not band adjustments If its just ratio codes then not a solenoid issue Dropping the pan will tell you if there is a mechanical issue in the rotating part of transmission, i.e. metal flakes/parts in the pan Just a heads up on ALL automatic trans rebuilds, if the rebuild part was $2,000(not removal and install) then expect it to last 12-18month If over $2,600 then 200k miles, extra cost is new sprags, OD drum, TSS sensor(4R/5R) and front pump "Soft parts" only, clutches and bands, and valve body are the only thing done on less expensive rebuilds |
Originally Posted by RonD
(Post 2225760)
Welcome to the forum
Unfortunately it reads like one of the one-way clutch(sprag) is failing, OD or Low sprag Disengaged when in D but reengaging in 1 or 2 is a sign of that In D the coast clutch is not used just the sprag, coast clutch is used in 1 or 2 so gets you moving and then you can usually shift to D Here is a read on what is what in the different gears: https://atracom.blob.core.windows.ne.../2003_5_50.pdf 4R and 5R are the same transmissions internally, 5R engine computers just have the option of turning on OD while still in 1st gear giving you a faux 2nd gear for smoother shift, in the 4R the engine had to REV higher before shifting Shift solenoid 3 is activated for the faux 2nd and then for OD, but not for Manual 2nd selection on shfter Do you still feel the 2nd, 3rd and then 4 gear shifts when in D, or is it skipping "2nd", i.e. 1st to 3rd and then to 4th Codes will tell you if its a solenoid issue, but doesn't read that way, also not band adjustments If its just ratio codes then not a solenoid issue Dropping the pan will tell you if there is a mechanical issue in the rotating part of transmission, i.e. metal flakes/parts in the pan Just a heads up on ALL automatic trans rebuilds, if the rebuild part was $2,000(not removal and install) then expect it to last 12-18month If over $2,600 then 200k miles, extra cost is new sprags, OD drum, TSS sensor(4R/5R) and front pump "Soft parts" only, clutches and bands, and valve body are the only thing done on less expensive rebuilds |
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