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Nah it probably needs to be replaced according to an article I read. According to it I need updated ecm hardware, calibration and fuel ratio sensors.
Im gonna pop the solenoids in once they arrive then install new afr sensors(one is always at 3.3 the other one does weird stuff as well) and see what codes come back up if any. Then if the article doesn't lie I will get different ecu and have a car without any lights
Why not? It was cheap. And if anything brakes I'm only out 500-700 bux for replacement tranny
I went to the transmission shop the conversation was short get 5k ready for full rebuild. why? When you can buy an is250 tranny for 400 bux same 760h figured I could just use some longer and try/hope not to kill it.
its good most of the time actually, total beast in pwr mode. The engine is healthy asf but that low rpm city driving it hates the solenoids can't keep up with the inputs of brake/go. but say hwy driving its perfect. Id Id driving in some slow traffic going like 20 and the lock up clutch engages and it stops dropping gears like it should so now it's up to me not brake it by forcing it to accelerate when it clearly can't. I can feel when the car doesn't like what's going on and I try to avoid those circumstances
Love this friggin car, feels like a plane when you're accelerating nicely with your seat back
Last edited by potatomon; Feb 23, 2019 at 10:27 PM.
Btw I am ashamed to admit I got a tranny filter from partosurce and it's some random brand but the sticker on the box said fram. The filter itself was much smaller in size and had plastic casing with paper filter instead of magnetized metal casing with fine magnetized meshing like the oem
I tried to diagnose the solenoids by checking resistance and clicking them. They seemed good. But later someone suggested to put them in ATF and heat it up(you get the point)
and see then. I don't think that would work either because they are linear solenoids or something like that meaning they can open 10 20 30 40 100% and do it smoothly and Idk how you would check this function on a table setup .
Anyway I ordered clutch lockup(slu) and line pressure control(SLT) solenoids straight from Japan cuz it was the cheapest option. I have a good feeling about this, many people
people report fixing the tranny replacing those 2.
Last edited by potatomon; Feb 23, 2019 at 10:42 PM.
I wouldn’t drive the car like that... Koodos to you for being able to tolerate that for so long. Stay safe!
Impossible to find some one that knows what they are doing, everybody just wants to rip you off.I'm not an expert, just taking it on myself to fix the problem and then I can buy up others like it and flip em, or at least help people deal with these issues
Guys I fixed it by changing Slu solenoid. Got it off eBay straight from Japan for a mere 100 dollars. Car no longer gets stuck in high gear and fail to downshift. I can drive in D and it does everything for me before I'd have to downshift it cuz it was trying to go from 1000 rpm obviously very slow acceleration and at times couldn't do it unless I went down a gear and even then you could tell the lockup was staying on the rpms acted like on a manual car always corresponding to speed.
Its still not as smooth as I'd like it to be at times. I got an SLT(line pressure control) solenoid on the way and I will top off my fluid and also thinking of replacing ecu because a lot of people report fixing hard downshifts by replacing ecu also my car needs new ecu hardware anyway due to updated afr sensor designs.
Yay go Toyota, went from a shuddering not going anywhere tranny to a solid unit just with some maintenance. 357,000km on this bih.
Engine fixed too with some rings and seals no longer burns oil.
Last edited by potatomon; Mar 8, 2019 at 01:12 AM.
Nice glads you worked out those issues, did you try fixing the old solenoids? To see if you maybe can free them up with some carb cleaner and push them manually and bench test them
Nice glads you worked out those issues, did you try fixing the old solenoids? To see if you maybe can free them up with some carb cleaner and push them manually and bench test them
Nah I didn't try when I have another Lexus with a crappy tranny I will surely try to revive it.
It's hard to bench test these, they open 10 20 40 50 100% and they must do it smooth as well.
I Know this is an old thread, But Does anyone have the exact location of the slu and slt solenoids like a picture or sumthing? I get a p2757 code and i need to know the exact location of the torque converter pressure control solenoid. By the way i have 07 IS250 rwd.
I Know this is an old thread, But Does anyone have the exact location of the slu and slt solenoids like a picture or sumthing? I get a p2757 code and i need to know the exact location of the torque converter pressure control solenoid. By the way i have 07 IS250 rwd.
I know its too late but here you go. Maybe this will help someone else at least.
This picture is for IS250 Gen II (2006-2013) just to be clear, since this is a GS forum.
Time to give a bump on this topic. I have a GS300 from 2006 also with a gearbox problem. It only shifts up to 4 gear, and the error codes are P2757 and P2714 as you can see in the image below:
I talked with Lexus to buy the Solenoid D, but the guy from the parts department said he couldn't identify the solenoid without the actual part code. The next image is a schematic sent by the parts department.
Can anyone identify the Solenoid D with the actual code?
The other doubt that I have is that the OEM part costs over 300€, but I can find on ebay entire solenoid kits for less than 200$, is it safe to buy non toyota solenoids or should I stick with the original?
Yes, looking at the information in that link, that seems correct, comparing the photo from the transmission and the schematic, I'm almost sure the part number that I need is the 35290.
Hello, I have Lexus IS 250 from 2006 year with automatic transmission and I have codes P2757 and C1201. I changed the solenoid, oil and filter for the transmission.
Are these codes connected with the ecm and tcm, should I buy knew computer or the problem is with transmission? Has anyone solved this problem?
For the last 3 years, I've been getting the P2757 code at 127,000 miles is was just an occasional bump in the tranny. After 15 minutes of driving. It gradually got worse. Then, the tranny started hanging up in 3rd or 4th gear. Randomly after 15 minutes of driving. This was the later half of the 2nd year. I was also getting codes for the O2 sensor and catalytic converter. My mechanic advised everything had been replaced and the converter was possibly defective. I decided to have my transmission checked out, by the best guy in the area. He advised, he didn't think it was the transmission. But couldn't pin point the issue. After many hours of looking through the Lexus forum. I stumbled across someone discussing that the ECU needed to be repaired. At 202,000 miles, the transmission was almost always getting hung in 3rd gear. I was able to use an OBD to clear the fault codes while driving, on my mobile phone and the tranny would run correctly after that. I sent my ECU off for repair. Once I got it back. I put it in, and the transmission has not given any problems at all. The O2 sensor codes and converter codes are gone. For $250 I would try this option first before digging into the tranny.
