Another update. Catalytic converter replaced. The service advisor says that the exhaust manifold also needs replacement. There was a recall a year or so ago and he told me (off the record) the dealership didn't do the recall correctly and basically, pencil whipped it. They also found some issues with the turbo. Fortunately, thus far no out-of-pocket expenses. However, it is very disappointing to note the actions of the dealer with the recall.
2018 - CVT issues at 41,000 miles!
('14-'18)
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Despite all the replacements, the technical advisor said he drove the car and it still has the original problem. The dealership and SOA seem unable to get to the bottom of this. I have written to SOA for a plan of action. I simply want my car to be safe and operational. If they can't do that then they need to have some other plan. They have been given ample time.
Update. SOA called and promised to make things right. Sending the field engineer again. The dealer called and said now they are convinced it's the AC compressor that was making noise and screwing up some sensor reading which led to all this. They just replaced the AC compressor. So far they say it seems to have resolved the issue. Fingers crossed.
Hopefully, this will be the final update. Picked up the car today. It has been over a month with the dealership. After getting SOA involved and filing an NHTSA complaint it appears the problem is for the moment resolved. To recap the following was initially done after faults/defects were found:
1. Transmission replaced.
2. Turbocharger replaced.
3.Catalytic converter replaced.
4.Exhaust manifold replaced.
The car was still surging and the problems did not go away. SOA sent an engineer again and this time around it was determined that the AC compressor was very noisy causing the knock sensor to pick up a false engine knock. This resulted in engine hesitation and surging. The AC compressor was replaced and the car drives fine now.
I am thankful that the car is now safe and operational. It is, however, disturbing to discover many manufacturing defects in a car with 41K. SOA probably spent close o 15K to rectify these items (no cost to me). They did intervene and resolve the issue thus far and so good on them for that. Now I have to decide whether to keep the car or get rid of it while it's still in good shape. Even with the good SOA experience (customer service) it is unlikely I will buy another Subaru CVT again.
1. Transmission replaced.
2. Turbocharger replaced.
3.Catalytic converter replaced.
4.Exhaust manifold replaced.
The car was still surging and the problems did not go away. SOA sent an engineer again and this time around it was determined that the AC compressor was very noisy causing the knock sensor to pick up a false engine knock. This resulted in engine hesitation and surging. The AC compressor was replaced and the car drives fine now.
I am thankful that the car is now safe and operational. It is, however, disturbing to discover many manufacturing defects in a car with 41K. SOA probably spent close o 15K to rectify these items (no cost to me). They did intervene and resolve the issue thus far and so good on them for that. Now I have to decide whether to keep the car or get rid of it while it's still in good shape. Even with the good SOA experience (customer service) it is unlikely I will buy another Subaru CVT again.
Any more news? I hope your problem is resolved.
Had my AC system repaired about a dozen times on my XT and problem still never was fully resolved
Can’t wait for the Subaru EVs to get perfected and better batteries. In 5 years?
I wonder if all those parts were actually faulty, or were only replaced because they didn't identify the true cause, the AC compressor triggering the knock sensor, until later and were clutching at straws.
I have had the exact same issue on my 1015 Forester with 2.5 since we had it and have gone back and forth with the dealer. It only has 47,000 miles on it. It has done that since we had it and always did it when the AC was on but excelerated quickly and smoothly with it off. I don't know how many times I told them it had something to do with the AC, and treated like I didn't know what I was talking about. Finally after having brake lamp switch replaced, I found a service bulletin related to the AC effecting the ECU causing the issue. It was not explained that the noise from the compressor effecting the knock sensor. I informed them and was denied again. The AC never worked good and the blower fan went out before 20,000 miles and finally they replaced the compressor, and evaporater. But that didn't change the problem with the erratic exceleration. Also it causes the system to use to much fuel as it averages 21 mpg and when changing oil there is fuel in it. Recently I brought it in because it was lunging pretty bad and found out the right front bearing and control arm bushings where gone. I assume the long term effect from the AC problem has put strain on the bearings and bushings. Anyway I never contacted subaru or filed a complaint with Nhsta. Is there a known resolution to this problem now. Maybe a better aftermarket compressor or ecu flash. Or anything else. I might add that they changed the differential fluid just after 30,000 miles and charged us for that.
My 2016 has been lurching at acceleration for some time. I bought it at 90k and it started around 104. I frequent 2 MAF codes, circuit high MAF and Temp sensor. 3 sensors later, I ran redundant grounds across to neg terminal. Smoothed out for a while then all came back with a vengeance. New years eve "BANG". I was thinking maybe the trans was the issue, amd it blowing would confirm that in theory. I now have a little under 126k. It's on a lift at my work where I'm putting a 24k unit in, trying to find if I need to move over the orig module to newer unit. It seems plug and play should be ok.
I find this odd surging issue is even more convoluted than I ever imagined after reading. And we're one of the better diagnostic shops in the area. I never thought to be involving SoA, so anyone that does please let us know! Example of too much electronics when they aren't needed.
I find this odd surging issue is even more convoluted than I ever imagined after reading. And we're one of the better diagnostic shops in the area. I never thought to be involving SoA, so anyone that does please let us know! Example of too much electronics when they aren't needed.
Swapped module over. Plug and play.
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