Overheating - Burning Oil - What to do?

A few minutes at 280 and most motor oil becomes worthless as a lubricant.

If you think the temp reading was telling the truth, I wouldn't invest anything else in that engine. Too much likelihood of bottom end bearing damage. Not worth the level of disassembly required to verify.

You'll probably get this car back on the road for less $ than replacing it, but it might be close.

Talk to the Hybrid Pit people. They might be able to mail you a rebuilt engine for the similar cost to that LKQ. I've never done business with them so this is just courtesy notification and not an endorsement.

Don't forget the EGR to preserve the next engine, and remember that the old engine has been blowing nasty stuff through the catalyst- so it probably isn't long for this earth itself.

 

I think 2 things:
Your present vehicle is toast, maybe to the point of being dangerous to drive in it's current condition.

You should shop around other Toyota dealers and places like Credit Unions for a better interest rate.
I think you still should be able to do a lot better than 9%........unless your credit rating is really bad.

OK....3 things:
Consider a good used economy car to drive for a couple of years until you can reasonably afford what you really want.
Based only on dollars and cents, a hybrid often is NOT the most economical choice overall.

 

JDM 2017 Lexus CT200H engine 45-65K miles will fit, Gen 4 will alleviate head gasket issues. $1400

JDM 2011-2017 TOYOTA CT200H 1.8L DUAL VVTI HYBRID 2ZR FXE ENGINE ONLY ( 2ZR.HYBRID.ENG ) – JDM of Ohio

Attached snip shows replacement JDM engines for 2012 Prius near Zip 47906

Search Results car-part.com JDM engines midway down the page

 

Well when we're discussing removing heads and things like that we know that the conversation is going to be difficult. Yes if you run into the Toyota dealer or LKQ it'll be $2,800 for an engine I guess they see you coming from the window as posted here the JDM Japan domestic market engines are available all over the United States and started about $1,100 and can get into the 14 area and of course whatever the market will bring because of whatever reason I just did the whole swap in a 2013 with an engine It's similar mileage to transmission installed in the car with the car running and a new rack of HV battery cells . All done purchased delivered to my door and installed not by me for under $3,200 no kidding In the southeast United States North Carolina to be exact this is car country.

 

Contact JDM, they may have installers, or contacts for installers.

 

Another consideration, I think depending on how much you can DIY, is to swap in a new short block. They're under $2K USD, at dealership parts departments. You'd want to use new head bolts, and it'd be worthwhile to get the Toyota gasket kit, which has head gasket, valve seals, and pretty much every gasket/seal internal to the engine.

When the engine's disassembled consider having a machine shop go over the head. They could install the valve seals as well.

Also, for sure thoroughly clean the EGR components, intake manifold and throttle body, replace PCV valve, replace water pump and thermostat.

Short block assembly link:


2012 Toyota Prius Two Engine Short Block - 1140037140 - Genuine Toyota Part


Suggested retail is $2282 USD, but if you check the specific dealership links for your area you'll likely find lower. For me, Foothills Toyota has it for $1855.

Parts numbers for gasket kit and head bolts are in the attached.

 

Your engine overheated because the water pump temporarily stopped working. If you continue to use the car, make sure that you monitor the engine coolant temperature (ECT). The coolant temperature should normally stay below 200F. I would only use the car for short distances and no highway drives.

I use a "P10" display connected to the OBD2 port to monitor the ECT on my 2011 Prius that has 133k miles. I want to catch a water pump problem before I cause harm to the engine. I have seen water pump problems for the Gen 3 on this forum for cars that have 150k to 210k miles.

If this happened to me, I would take a chance that the engine can be saved by replacing the water pump, thermostat, and new coolant. If you use OEM parts, this would cost about $400 or so DIY. You can then drive the car normally and watch for classic blown Gen 3 head gasket symptoms (engine misfires, coolant consumption, and cold engine startup shaking). The other thing that you might what to do is an oil and filter change if you think your oil got very hot. Maybe you can get more usage out of your car before you need to replace it.

Good luck with your car, and keep this thread updated.

Posted via the PriusChat mobile app.

 

Any and all cars used to have a gauge showing coolant temp, but not Prius.

 

Mine does, in the form of a Scan Gauge. That doesn't mean I'll be watching it at the right moment if it ever shows abnormally high temperature.

 

I used a Scangauge for a few years, started getting check hybrid system message, brake warning lights (and work-to-rule brakes). Dealership finally suggested to try removing SG, problem went away.

Yes you can add on a SG, to monitor coolant temp. And do other things, like procure a spare tire for example. But buying a 40k car, itd be nice to have some of these things built-in.

 

I would preemptively change the coolant pump and move to 5w30 oil. Hopefully the coolant boiled out and the level doesn't continually go down. Which would indicate a head gasket problem. I figure, what do you have to lose?

Good Luck...

 

Or a simple leak.

 

See Mendel Leisk sig links re: EGR, oil catch can

 

PC Frum member @HelloMcFly travels to you and does engine swaps....reach out to him. He is in OKC.so not too far away.

 

Did you buy an OEM water pump or something else, and how much did you pay for it?

Keep a close watch on your ECT when you drive the car. Normal driving, it should not go above 197F.

After all the air is completely bleed out of the engine coolant, keep a very close watch on the coolant level in the plastic tank. If it does not drop, you are good to drive it like normal. If it drops, there is a very good possibility of head gasket failure.

Posted via the PriusChat mobile app.