Torque is a common app people use on android based devices. I use it, pretty good app, I haven't tried if any new PID settings have been added though.

 

Thx. I will pick it up.

 

Ask and it will take 9 years to receive. Poking around on another thread, this one was not too difficult, only question is the conversion. Indicated value 20C, A-40 is 18C.

 

So, did you figure out how to get the actual transmission fluid temperature out of this PID? I'm getting ready to change the transmission fluid, and this certainly would be beneficial. I have a BlueDriver Bluetooth reader, so it would be great to be under the car as the fluid is warming up, and catch it at the right time.
Thanks for your work on this so far.
Bill

 

Bill, no I did not. I've changed the fluid twice since then by just using common sense and good guesswork. No issues either time. Good luck, but dont over think the issue.

 

Thanks Scott,

I'm going to remove the refill plug first, so that if there are problems, I don't have an empty gearbox. Was going to use the suggestion of refilling from the top hose of the cooler, refilling with the same amount that I take out, plus checking once it is warm and topping off as necessary.

I seem to remember seeing something that implied if you let it drain for a couple days, the torque converter eventually drains out as well, and you get up to 3 more quarts out of it. I can't find that reference any more, so is that true? I can let the car sit on the lift for 3 days if need be. She is a 2003 XKR with 88,500 miles on it, that I recently acquired. No record of a previous ATF fluid change.

I thought I'd check the condition of the fluid as it comes out. If it is horrible dark and dirty, I'd just refill with fresh fluid, run it for a while, then drain that fluid out and change the filter at that point Does that sound like a good idea?

Thanks,
Bill

 

Bill,
That sounds like a good plan. I'm not familiar with filling through the cooler hose but it should work. I have my doubts about letting the car sit to drain the converter, maybe. There is a particularly good YouTube channel "To The Garage" that you would like. Www.tothegarage.co.uk Im pretty sure he will have a segment on transmission fluid change.

 

The first time my forum buddy Rick (joycesjag) did an ATF drain-and-fill on his wife's 2005 S-Type running the same ZF 6HP26 transmission that our 4.2 XK8s and XKRs utilize, he dropped the pan and allowed the system to drain overnight. By doing so, he was able to drain between 7.5 and 8 quarts out of the system instead of the typical 6 to 7 quarts by dropping the pan and allowing an hour or so of draining....

 

Excellent. Thanks. Was probably going to do that away, as I'm sure I can find more than enough work in the garage to wait it out.

 

Be sure to measure your overnight-drained ATF and let us know the result....

 

Partway through this fluid change. Measuring everything, and will report later. I know I won't get 10.6 qts out.

First off, getting the fill plug out is easy. 8mm socket (3/8" drive), 3/8" to 1/2" adapter, and 18 inch 1/2" breaker bar. It's like it was designed for this.

Fluid came out of there pretty dirty, but not burnt. Haven't pulled the pan yet, and measured everything out yet, but assuming that I get 7 qts out out of the 10 qt in the system (really 10.6 qt, but round for easy math), 30 percent of the bad fluid is left in there. I put 7 qts of good fluid in there, cycle it through the system, then drain and refill with clean fluid. Sounds like there would only be 9% dirty fluid in there, much better than the 30%, and the cost is about $40. So, my question is: Is a brief cycling through the gear enough, or should i drive it a few miles. I won't be driving this car a lot, maybe 3k-4k miles a year, so this might be the last ATF change that I do. Opinions?

I also have a major leak in one of the cylinders for the MaxJax lift, so I'm going to figure that into my actions. Not sure that I can get it to lift the car again, and I'd hate to disable the car while I'm fixing that lift cylinder.

 

My wife's 2015 Lexus RX350 only drains 2.25 quarts of ATF per cold drain-and-fill. The system holds 7 quarts total. So last July I did three cold drain-and-fills on three successive mornings, adding exactly 2.25 quarts of fresh ATF each time. To ensure sufficient old-vs.-new ATF mixture in the system between the first and second drain-and-fill and then between the second and third drain-and-fill, I had her drive 30 to 40 miles directly after finishing each one. Works for me....

 

I pondered this overnight. Any miles with a mixture of old versus new are better than miles with just old. I'll clean out the pan, and get as much old fluid out as I can, refill with fresh fluid, and drive it until I get the lift fixed and can change the fluid again.

 

Sounds like a good plan. No need to drop the pan again for the second one - just do a simple drain-and-fill....

 

I was going to drop the pan now to get the most of the old fluid out, and clean it out with some mineral spirits.I'll put a new pan on with the last fluid change.