Cleaned EGR valve, not sure if full circuit is needed. 111k miles

Days versus minutes??? MMMM

I believe it's clean enough.
You should search ebay, and use duck duck go to search junk yards for the EGR Cooler.
Get a spare and clean it up for the next time. It will save you a LOT of time and heart ache...

 

That’s looking pretty good. With EGR cleaning, you want to get the cooler cleaning started as early as possible; it’s the time consuming part.

There’s maybe a slight “patina” of carbon on the convoluted fins, hard to tell.

keep in mind, it’s not just “clogs” you’re trying to dispel; the main object of that contraption is to cool the exhaust gasses, and even a thin layer of carbon reduces it’s efficacy.

 

Make sure you connect the pcv hose to the intake manifold when you put the intake
manifold back on. It's right next to the top coolant hose on the throttle body.
Because if you don't, the hybrid battery will turn the engine over, but it won't start.
And you'll get the "check hybrid system" on the display...

Then you'll have to remove the air filter housing to install it....
How do I know this????

I cleaned my egr system today. Pretty quick when you have an already cleaned
spare cooler!
I also changed the trans fluid and the engine coolant. No issues with air in the system
because I fill about a cup at a time and VERY slowly, and wait for it to flow out of the
coolant tank.

After connecting the pcv hose, and reinstalling the air filter housing, in the hot sun, the
engine started, ran rough for 3 or 4 second then smoothed out.

The cooler was completely blocked, but everything else just had soot. Easy to clean out.
The 4 egr holes in the manifold were not blocked.
The engine runs VERY smooth again.

 

Everyone has their idea of why the head gasket fails.
My personal opinion is that it's a little of each.
I only went 301,000 before my head gasket failed....

And only time will tell if the felpro gasket "fixes" a head gasket failure...
No one has reported going 2-300,000 miles with it. And if they don't clean the cooler
and intake manifold....

 

Glad it all worked out!
And yes, it does run better, and a different sound. It's not struggling.
If you clean it out every 50,000 miles or so it will be easier to clean the cooler.
A spare cooler helps...

 

I will offer another version of overheating.
The engine coolant pump loses its efficiency due to small cracks on the impeller rotor, the coolant circulation is not ensured at high speed at high revs, the engine head overheats.
On Gen2, the pump was mechanical and reliable.

 

Still, the head gasket failure so often starts at cylinder one exhaust, and the EGR passages in intake clog asymmetrically, with cylinder one passage prone to completely clog first.

 

IIRC @Raytheeagle posited they're prone to failure by 150k miles. Going by that, I'd say replacement every 100k miles would be prudent. Something you might only do once.

I'm thinking to do ours at the next engine coolant change. First coolant change was at the 10 year mark, and a mere 88K kms, but it's distance or date, whichever comes first, and I stuck with that. I'll do another coolant change at the 15 year mark (a year and a bit from now, and we're currently around 101K kms), even with the ever slowing accumulation of "miles", with both my wife and I retired. But it'll be a once thing, and good to get out of the way.

Probably with this:

Buy AISIN WPT190 Pump, Water. Prices, fast shipping, photos, weight - Amayama

And just for insurance hang onto the old one...

 

I changed my water pump at 150K just for insurance, am now at 224K with no issues. And yes I kept the old one just in case!

 

Could just be the long drives plus your attention to driving style. Nevertheless your engine thanks you.

 

Yeah I wouldn't expect EGR cleaning to improve mpg, it's roughly akin to doing an oil change or coolant change, just good for the engine's well-being.

Geez our 2010 is the spitting image of yours, silver with the Canadian "Touring" package. When we were wandering around the dealership lot (awash in 2010 Prius), I couldn't stomach the look of those 15" plastic wheel covers. Plus we'd test driven one of those first, and then a few days later test-drove our Touring: night-and-day difference in the steering feel, felt planted/sure in comparison.

 

Currently 4.9 liters per 100 km. If on a phone turn it landscape and you’ll see the Fuely badge. We do a little better in winter, with Michelin snows in 15” size, or about neck and neck.

with the 17’s I replaced OEM Michelin Pilots with Primacy MXM4, and mpg nose dived. About 4 years back I’d guess, slowly climbing out of that hole.