Mercury Mountaineer Transmission Problems
My 2001 Mountaineer's 4R70W transmission overheats. I replaced the filter and drained the fluid from the torque converter drain plug. I filled the transmission with 12 quarts of Mercon V. The capacity is 13.9 quarts. I'm sure there was at least 2 quarts that I couldn't drain. I ran compressed air through all the cooling lines and oil coolers. They are free of blockage. However, I ran the engine with both pressure and return lines fom the transmission and no fluid came out of the transmission. I don't think it has a bad pump since the torque converter refilled and the transmission shifts fine and does not slip.
Is there a bypass valve, check valve, or a sensor that prevents the fluid from flowing? Any suggestion?
Is there a bypass valve, check valve, or a sensor that prevents the fluid from flowing? Any suggestion?
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In the workshop#1 (general) I was told the scan shows code 775; solenoids out of range. I drove it to another -trans specialist- workshop (70 miles) to ensure diagnostic; the vehicle behaves normal, -nothing wrong- and the new scan showed nothing!
Took it to the electric shop to ensure right voltage, and voltage was correct but cca or caa not, so need to replace battery; by the way I left my car with workshop#2 several days for them to test/drive it and look for something mas precise...Do someone have or had any similar experience? Please?? if so, what was the conclusion?
My neighbor has an 09 Suburban - just lost their transmission at 60,000 miles.
OTOH, I have an 02 Odyssey with 194,000 on the transmission, still going. My cousin has a Taurus with 300,000 miles on it, original transmission (and engine). Lots of factors go into these events - but 100,000 miles from anybody's transmission shouldn't be denigrated as unfair performance.
My wife was driving it and the orange wrench came up on the dash. We have a 160k on it with no major issues. So like you I read all the blogs and watched a lot of youtube. No where did it describe our issues. The motor would run up to 3k before it would slowly start to move. Seemed as if we lost 1st and 2nd and it was stuck in a taller gear. So we changed out the fluid and installed a new filter....nothing changed... (I know..long shot). While I was under there I noticed that the condensation drain was dripping right on top of the shift solenoid plug. Drivers side right above the trans pan so I pulled out the solenoid pack (black module next to the filter ) it's held on by 8 torx bolts an a very hard to get to 10 mm bolt right through the top of the plug. Once out I noticed some corrosion on the plug wiring harness. Then Looking at the solenoid side there was more corrosion. with a closer inspection there were only 11 of what should have been 12 brass posts that are part of the connection to the harness I used a small pick to remove the red end of the plug and there it was the missing brass post. I pulled it out and installed a new solenoid pack (400.00) packed the plug with a bunch of dielectric grease and put it back together. Now it runs flawlessly. Shifts perfect...In not sure who's idea it was to have the condensation drain right over that connection but I'm sure it has cost many the expenses of a full trans re placement.
"Honey, we need a new truck"
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