Cylinder 1 misfire and other codes

According to my research, 12v batteries have a lifespan of 6 years. Plus, if hybrids aren't driven that much, the hv battery will fail and since my car had 28k miles when I got, it wasn't driven much at all. It was only driven about 4 thousand miles/year. You could be right though, this issue could be completely separate. Do you like Eagles?

 

Eagle Scout.

 

Lack of driving will affect the hybrid battery. But 3 owners and 28 k miles?

I still have the original 12v in our 2010 Prius II. And there are some batteries that have a warranty for 84 months (or 7 years).

 

Clean title, but yes I agree that it is a lot of owners with this low of miles. My throttle body is clean as a whistle now and car didn't have front end damage. Oil definitely doesn't have coolant in it. Looks like they added about 12 oz of coolant, but no coolant was added for the last 20k and I believe losing that much coolant over 20k miles is normal. I think you may be on to something with the component swap. Tomorrown I am going to drive it at 80 mph for 4 hours to see if getting the motor really hot for a long time will correct the issue. I read about a guy on here that had a similar issue that did just that. Do you know if it is bad for the motor to keep the engine breaking(B) on while driving at high speeds?

 

I love Eagles. My favorite is the Golden Eagle. Really hard to say, 3 owners is not a good sign... But car ran great when I bought it and passed smog no problem.

 

No it is not bad for it, it is just not necessary unless you are descending from a high elevation (5000 ft+). If you use it on the flat, all you are doing is using engine braking to replace regen braking, so you get less charge in the HV battery over the same distance compared to if you just used D. You also can't use the cruise control in B.

 

Gotcha, my goal is to keep the motor on as much as possible to hopefully fix my issue. I don't care about good mileage at this point. I just need to get my motor humming nonstop for at least a couple hours without it going into electric mode.

 

Just driving at 80 MPH will keep the ICE running all the time. It won't make any difference in that regard whether it is in D or B.

 

Sending oil sample will give you information on health of your oil and contamination you are referring....
You can also do hot and cold pressure inspection for your coolant ..and see if you have leak somewhere....and using stethoscope you can see other internal parts of engine if you do loose coolant

 

Losing of coolant without visible sign are not good outcome especially if you are burning this inside of combustion chambers

 

I have seen couple of prius engines in my lifetime with cracked head's and gaskets..and all are abuse from owner that on my last repair i have found bypass for coolant level ...

 

Running the Prius at 80 mph will not make the engine run hotter (the thermostat will keep the engine around 190-195 F), but sustained 80 mph in my experience will put additional strain on the engine, particularly the rings and seals and lead to some oil consumption. We drive down to So Cal a couple of times a year and going above 75 mph on I-5 for hours at a time leads to oil consumption. I monitored the engine temp going over the grapevine the last time and it stayed at 190-195 F.

I have 147 k miles on our 2010 and have not had any coolant usage. I would not consider some coolant usage normal. If you have gone 20 k miles and have not seen any coolant usage, it might not be using coolant and the creamy consistency below the throttle could be due to condensation in the intake manifold.

Hope that helps and keep us posted.

 

Gotcha, If the dealer is correct and it is a blown head gasket, what do I have to lose by putting a bottle of blue devil head gasket repair in the coolant tank? It doesn't make sense to spend 5 grand on a head gasket when the car is only worth about nine or ten... I went for a long drive this morning out to borrego springs and came back with the same knock/rattle... No better, no worse. put about 160 miles on car and coolant level remained the same after drive. When I have the car in the engine breaking mode, there is no rattle/knock because its not cycling from ev to gas. I think this has got to be some major clue leading to somewhere. Just not sure where yet... As simple as it sounds, I don't think anyone has looked at the fuses. Do you think a blown fuse could be causing this?

 

Thanks samprocat, I am considiering pouring a bottle of blue devil into the coolant tank even though three out five mechanics I worked with don't believe it is a blown head gasket... The only ones that do are the two toyota dealers I went to because they want to charge five grand to fix it.... They also said no test they could do would verify a blown head gasket and the only way to know for sure is to take motor apart.

 

Maybe you will get lucky and seal gasket......Using blue devils addative will lead in big drop on coolant taking heat out of the engine.....because addative will leave residue on everything coolant touches
Good luck....
Easy way to have right diagnosis is to use tool that attaches to coolant expansion bottle and run engine on highway then record pressure at time of diagnostic test drive ......
This will tell you if you have compression going in the coolant

 

Makes sense... Thank you