Prius won’t get over 30mpg after new engine installed

Cool, you gotta get that fixed cause you know it's questionable? And I have no advise on the Gen 3 and the inverter pump swap swap out?

But the freaking Gen 2's ... I couldn't even change the light bulbs on the freaking thing! It had to go to the Hybrid Shop for new light bulbs! Are you freaking kidding me?? Uh sorry I saw "head light's," and had "Flashback's."

 

Too esoteric, lol.

 

Given its a 2012 in 2021 America, the proper units might be miles/9 years, a wee bit slower than distance covered in a light second.

 

Are you talking in air or a vacuum?

 

I have a hard enough keeping a gen3 running in air; I don't think even Elon could make it run in a vacuum.

 

Speed of light is faster in a vacuum....

 

Hasn't he got a roadster traveling in a vacuum already?

 

WOW, well first that is an incredible level of integrity on Greentec's part, to say the least!

Not only did they not sell you a part you did not need? But they told you what is wrong with your car! You can't do better than that. But TCM is that a Transmission Control Module? Does that mean no road trip for the "Prius," today?

 

If possible, can you provide any additional details on this. My knowledge on the transmission control module is fairly limited and I'm trying to understand how it would cause your issues. My understanding was that this module mostly takes care of the parking mechanism and some safety interlocks. My initial thought is someone is f-o-s, but as I said, my level of knowledge on that system is limited..

 

Well likely we will have to wait because he did say he had to take long trip. But he did have a third party make the diagonios and they lost a sell. And it makes sense to me?

Our second Gen going up hill SOC goes to two purple bar's if you hit the throttle for a big climb. But it still moves, if you really want a "Speeding Ticket," it is happy to oblige!

Our Dayton hill is short at only a mile climb from 4300 ft to 5000. But a week or so I took it to Reno over 341 at least 8000 ft I think but I'm not sure I missed the sign at the top.

But SOC was nothing during about 6 miles of climbing and the car easily kept going as fast as you wanted to go. With a "Prius with stock suspension," uphill is no big deal, and if you wanted a speeding ticket it was happy to accommodate you.

The CVT tranny did whatever they do to accommodate the increase in elevation, the SOC of the battery did not seem to make a difference?

The part of that trip that ticked me off was the very fast Mustang behind me and the very slow SUV in front! With a stock " suspension Prius," I could not safely overtake the SUV.

And the Mustang was being a "PIA!" So I pulled over and let the Mustang go, he made an illegal pass on the SUV about two mile past where I would have passed him in my modded Tercel! The pull over for slower vehicle lane. And a sharp bend at the end.

The Prius would have been flying if I would have tried that pass. But stock tires, rim and suspension and traction control on? Yeah uh No!

The Mustang did not make the pass there (Candy nice person) but he did make the pass a bit later and I must say a flat plane Mustang V8 at full throttle, sounds awesome!

But back on point a CVT, transmission that does not know what gear it is supposed to be in would suck, I would imagine?

 

LOL, so you're still here and not strained in the middle of nowhere? What happened with the planed out of town trip?

And the CVT tranny shifts? I can't tell? We had a 2001 PT Cruiser that I managed to destroy ... but ours was a AT. And the cool thing was you could put the tranny in first gear and nail the throttle and the tranny would take care of the rest! It was a throw feature from back in the day ... pretty cool.

But our Prius and the tranny, I have no idea what it is doing?? Climbing a hill SOC goes to two purple bar's. But it does not slow down. And if you press the throttle down it goes faster while climbing. I have no idea what gear it is in? It just goes there is not really anything to think about?

 

How did you know to change the #4 coil pack, repeatedly?

moto g(7) power ?

 

The TCM blew the circuit that controls the overdrive. So the car is running with two speeds forward. No overdrive equals crappy fuel economy.

Now I'm even more confused. Again, I'm more of a Gen 2 person, but I wasn't aware there was 2 forward speeds and an overdrive in a Gen 3. Apparently I have some learning to do....

But this gives me some ideas for a Gen 2 I've been working on that sounds like a bicycle with a baseball card flapping in the spokes during regen. Sound completely goes away if you shift to neutral. Thought it was axles, so I installed new axles and front hubs. Sound pretty much didn't change. Suspect it to be a transaxle issue as it's at it's worst during regen. Perhaps swapping the TCM would be an easier, much less PITA thing to do first, just in case it's something similar. I just don't know that the Gen 2 TCM would have anything to do with it.

 

I can believe the board is burnt if it looks smoked. Hard to believe it somehow continued to run and forced the transaxle to operate at a low gear ratio.

Unless the engine was low in power. The engine was recently replaced. Obviously the hybrid system employs a continuously variable transaxle and will select a gear ratio appropriate to climb the grade. Which will force high engine rpms. Time will tell.

 

I'm also curious what indicators in techstream the tech saw that pointed him in that direction.