Trans not shifting until warm...sort of
Hey Scotty, I have a 2004 Toyota Camry with the U151E transmission (5 speed automatic). I bought this at a car auction a year ago and it runs perfectly fine except for one issue. From a cold start the vehicle shifts without hesitation up until its time to shift into 4th gear at 25 mph. I have found a workaround for this, but not a solution. If I let the engine warm up to a quarter of the way between cold and hot, it shifts perfectly fine through all the gears. My fluid level is where it should be on the dipstick.
Any insight would be helpful.
The code means the engine is not warming up correctly within the time frame set by the computer. This indicates a problem with your thermostat, probably stuck open. Replace it with OEM and your trans problem will probably be solved.
I scanned it with the one at AutoZone, but it didnt show any relevant codes (afaik). Currently I have a P0128 that I need to take care of.
Im curious now if that will work. I had already intended to replace the thermostat, but didnt have the time right now. I will definitely let you know what happens. Ty for the suggestion. At any rate, its a problem that I have to fix anyway