Toyota Prius Gen 4 to Gen 3 Engine swap issues!!!

What's up Prius Chat!!


I have a 2011 Prius that I did a gen 4 swap into.(Well I had it done) The new engine has 42K on it.

After getting everything together the car runs and drives. But It has a voltage leak. I don't have the code at the

moment, but i will get it. When you drive the car it might shut down randomly. It states that the hybrid system is

over heating (The LCD on the dashboard). After a long time of not having tune ti jump on it with my mechanic. I

sent it to toyota. I explained my issue and they basically told me what I told them. And wanted to charge me

200 for the information that they had already received from me. Without being rude I asked where is the

fault/leak. Oh this car has a engine in it that doesn't fit in this car. Yeah I got that but I need to figure the issue

out. What's the issue and why is it shutting down. Becasue if I know where we can repair it and move on. They

said the car shouldn't be driving because of the issue, Ok I understand that but again (WHAT THE ISSUE?) Oh

we might have to do more diagnostics to find out the problem? Why did I bring this here again? I don't have any

more knowledge than when I brought it in. SMH so im here to ask some of you guys that may have

experienced this issue before. In my book hybrid system would be Hybrid battery the inverter and the orange

cable. I have tried a different battery and a different inverter. Just trying to figure it out. They (toyota) told me

basically to junk the car. But I know better. Please any information you have would be great.


Thanks folks

 

Sorry it has been a crazy week. But after pulling techstream back up I had the following codes.

P0A2B-250 Drive Motor "A" Temperature Sensor Circuit Range Performance

P0AA6 - Hybrid Voltage System Isolation Fault

The car does run and drive but again just trying to track it all down.

 

These are the 2 codes that popped up on techstream. While drive the car will just shutdown. Shutdown meaning the car will lose all power

and state that the hybrid system is overheating. Once it cools down you can drive it again until it gets hot. But you could be anywhere and

this happens. When you press the gas there is no power until the hybrid system cools off.

 

Yes. Both pumps have also been changed. We put it in maintainance mode to bleed/burp the systerm but the car will actually over heat if

it's in maintenance mode after a while.

 

Im not sure but they were both changed

 

I thought about that too. We had a couple battery's and it didn't matter the same result was going to happen. If the car is setting still or

moving it's going to overheat. We also changed the inverter. No change.

 

Ok the detail codes are: 526 and 614

 

Ok im back after taking some time off of this one. But it looks like some light might be at the end of the

tunnel. We ended up changing the main orange cable. After this the 526 code went away. Im

not sure if it will or wont show back up. But now im about to change the other 2

orange cables in hopes of a successful driving vehicle. Wish me luck as we tear in this week. Im not sure if

this is the solution but what would cause 3 orange cables to have leakage issues?

 

AHHHHHHHH!!! ok that's a no go!! 614 and 526 are both back!! I guess the next step is to pull the AC

compressor and see if there is water and if everything needs to be resoilder/reflowed. If this doesn't work im

going to be leaning toward the transmission. It's the only thing left that has a orange cable. Im ready to drive it

and sell the other ones. To many projects not enough time. Any feedback would be excellent.

 

What's a megger? If you don't mind explaining