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

Can you provide any details on this solenoid? I'm just not familiar enough to know if the Gen 2 is similar. trying to sort it out. Got a TCM from a 2009 salvage car for $18 over the weekend.

 

Yes, please give some additional details, maybe even photos of the parts, or part numbers if you have them.

The Transmission Control ECU has a pretty narrow job description: there is a single switched-reluctance electric motor that it drives in one direction to lock the transmission into Park, and drives in the other direction to shift out of Park. It has no other effect on how the transmission operates. (Those details haven't changed very much from Gen 2, but at least the actuator motor is now in a more accessible place on the tranny.)

 

The "solenoid" must be the Shift Control Actuator Assembly that operates the Parking Pawl.

 

Yes, that's the switched-reluctance electric motor I mentioned. We might assume that's what Chardone69 is calling the "solenoid", if the Transmission Control ECU is also what Chardone69 is calling the "TCM".

But that's why I asked if @Chardone69 could come back with photos or part numbers, so we don't have to assume. We already know Chardone69 has been told some things that weren't accurate (about gears and overdrive etc.). So the picure isn't quite fitting together perfectly, and that's a point in history-gathering where it helps to back up one step and say "ok, can you clarify exactly what parts you're talking about?".

 

Well, I wouldn't have believed it, if I hadn't just finished it........

refer to post #77. This car has been kicking my BUTT trying to figure out the ticking noise on regen. No noise on acceleration or steady highway speed, just when coasting or on the brakes. Sounds just like a playing card in the spokes of a bicycle, and fairly loud. The frequency follows the speed of the car, yet completely goes away if you put car in neutral while coasting.

This is the 2005 Prius we purchased in fall of 2018 with 195k miles on it. Now around 230k? Recently sold it (very cheap!!) to a previous forum member because he needed another car for the family, with the understanding there may be something wrong with the transaxle.

He swung by the house today, we installed the 2009 TCM I bought recently for <20 bucks. Took 5 minutes, or less, to swap out. 2005 part number 89535-47010. 2009 part number 89535-47020. Exactly the same externally, at least. Guess what? The noise is completely gone. No more ticking. I still don't get it, but I'm a believer. And to think I spent $250 bucks on an axle/hub kit to replace both sides and spent an entire Saturday morning doing that, when all I really needed was a TC module and 5 minutes. Maybe this can save the next guy.

We also disassembled the old tcm and there was NO obvious damage that jumps out and says "look at me".

I'm still shaking my head over this one....dang I let that car go cheap, lol. Probably a 1/4 of what it would go for now....

 

Additional update....reported mpg has gone from mid 20's to a current 40. I'll get in touch again at end of week to see how things are going.
Still shaking my head wondering wth?

 

There is no such component. What you are calling a "solenoid" here is a switched-reluctance electric motor, which rotates through cycloid reduction gearing to move the parking pawl into and out of position.

Solenoid:



Switched reluctance motor:

 

Got any codes for us???

 

inverter