Do you have a code scanner? Could you run a scan and see if you're getting any codes at all? Thank you in advance!!! 🙏🙏🙏 The reason I ask is based on a post on Prius chat "Back to Gen 4 Prius Exhaust heat exchanger Bypass issues"
I never had any check engine light. And when I found the problem by the visual white smoke coming out of the exhaust, my coolant levels did drop, but not all the way empty, because I got the problem in time. But I never connected to a scanner, even though I have one. I don’t see how this would be triggering anything specific unless you run the coolant all the way dry and your engine overheats.
I love all of your videos, but you misunderstand the Prius Prime's heating system. The bypass worked because it stopped the two problems you had: leaking coolant and blowing white smoke out the tailpipe. The heat works quickly because it's a heat pump driven by an electric motor powered by the PHEV battery. I don't recommend it, but I think you could remove all coolant, all spark plugs, and all gasoline, and the heat would still work. At least until the computer decided to test or start the engine, it would. The heat is not from the engine heating up its coolant, it's from the heat pump warming up the HVAC refrigerant. A clue is that engine block and coolant would never be warmed up in 30 or 60 seconds.
Yeah, you’re very right. It is a electric heat pump. I just don’t know why the heck they would run it down there to the catalytic converter. What a poor engineering design I wonder what the main purpose is of that.
There's several reasons to flow coolant to the exhaust, the info is out there, relatively tiny amount of digging. What's interesting to me is that you think it's poor engineering on Toyota's part, without being able to weigh the pros and cons. You are unaware of the pros. I'm not defending Toyota, but I am a huge fan of critical thinking and have a bit of a morbid fascination regarding any general lack of it.
@@nahteoToyotas make great products. That’s why they are number 1 in reliability. However they could have make the parts better so that failure is not so high. At least I was able to figure out a solution that’s cost free for people that can’t afford several thousands to replace their catalytic converter that the dealership pushes. This design was done as a one size fits all for many of their hybrids. On the prime is not necessary because of the electric heat pump. But is necessary if they don’t have that. For the prime it is to save costs during manufacturing. BTW one of my favorite classes in high school was a course on critical thinking I think society should have more of it :)
This feature is nice to have but if it's broken way to expensive😂 this bypass is really known about prius
True!
Nice video. Thanks. Do you know if your roof rack is specific to the Prime or does it fit all Prius models of that generation?
I think it fits all generations of the Prius whether it’s a prime or not, but worth double checking
@@AUTOGUYDIYThanks.
@@garytango anytime!
You seen a video where someone put a newer unit from
Like a 2020 that has Apple car play working on it put in a 2017 Prius
Wish I knew that! But I never liked apple car play in any vehicle I have driven. I prefer to use my phone. Guess I am old school in some things. Lol
Do you have a code scanner?
Could you run a scan and see if you're getting any codes at all?
Thank you in advance!!!
🙏🙏🙏
The reason I ask is based on a post on Prius chat "Back to Gen 4 Prius Exhaust heat exchanger Bypass issues"
I never had any check engine light. And when I found the problem by the visual white smoke coming out of the exhaust, my coolant levels did drop, but not all the way empty, because I got the problem in time. But I never connected to a scanner, even though I have one. I don’t see how this would be triggering anything specific unless you run the coolant all the way dry and your engine overheats.
I love all of your videos, but you misunderstand the Prius Prime's heating system.
The bypass worked because it stopped the two problems you had: leaking coolant and blowing white smoke out the tailpipe. The heat works quickly because it's a heat pump driven by an electric motor powered by the PHEV battery.
I don't recommend it, but I think you could remove all coolant, all spark plugs, and all gasoline, and the heat would still work. At least until the computer decided to test or start the engine, it would.
The heat is not from the engine heating up its coolant, it's from the heat pump warming up the HVAC refrigerant. A clue is that engine block and coolant would never be warmed up in 30 or 60 seconds.
Yeah, you’re very right. It is a electric heat pump. I just don’t know why the heck they would run it down there to the catalytic converter. What a poor engineering design I wonder what the main purpose is of that.
I would like to know this too@@AUTOGUYDIY
There's several reasons to flow coolant to the exhaust, the info is out there, relatively tiny amount of digging. What's interesting to me is that you think it's poor engineering on Toyota's part, without being able to weigh the pros and cons. You are unaware of the pros. I'm not defending Toyota, but I am a huge fan of critical thinking and have a bit of a morbid fascination regarding any general lack of it.
@@nahteoToyotas make great products. That’s why they are number 1 in reliability. However they could have make the parts better so that failure is not so high. At least I was able to figure out a solution that’s cost free for people that can’t afford several thousands to replace their catalytic converter that the dealership pushes. This design was done as a one size fits all for many of their hybrids. On the prime is not necessary because of the electric heat pump. But is necessary if they don’t have that. For the prime it is to save costs during manufacturing. BTW one of my favorite classes in high school was a course on critical thinking I think society should have more of it :)