[Chrispittman70]

My 2006 Sienna started making a funny clicking noise but I couldn’t safety pull over for another half mile. When I finally did it was overheating steaming like crazy. The oil and coolant levels seem okay but it’s throwing codes P0117, P0332, and P0327. I’m afraid my engine is fried. If the engine gets hot enough to break the block sensors is it worth fixing?

 

[Chrispittman70]

My 2006 Sienna started making a funny clicking noise but I couldn’t safety pull over for another half mile. When I finally did it was overheating steaming like crazy. The oil and coolant levels seem okay but it’s throwing codes P0117, P0332, and P0327. I’m afraid my engine is fried. If the engine gets hot enough to break the block sensors is it worth fixing?

Does anyone know something I can do myself to help diagnose this issue? Thanks!

 

[paul r]

Those codes are for the knock sensors which are deeply embedded in the valley under the intake plenum..the p0117 is for the engine coolant sensor. Here is a video that may shed some light on your situation.

 

[sixto]

Sort the cooling system then see how it runs. Hopefully it survived. If it doesn’t run right or you get misfire codes, weigh the cost and effort of further diagnosis against the likelihood that it won’t be a cheap or easy fix. Just checking compression takes the better part of a day. The effort might be better spent looking for a replacement engine or replacement car

Sixto
‘04 LE FWD 198K miles

 

[3Wheelerguy]

I saw a Sienna many years ago that was overheated with knock sensor codes. IT got hot. Real hot. The knock sensors were melted.
Not liking the 'clicking' noise you are talking about. Hard to say what is going on. If it got that hot I am sure there is long term issues. Seals gone bad. Rings leaking. Burns more oil. Who knows...

Can you post a vid of it running?

 

[BillG]

Overheating aluminum heads is nearly always bad. However, the fack that it was steaming suggests all hope is not lost. If you sprung a leak that dumped coolant on the outside of the engine, it may still have provided enough cooling to have saved the engine. I'd guess you dumped coolant on the knock sensors/wiring and caused your codes. Fix your leak(s) and do a check for exhaust gas in the coolant. No gases or oil in the coolant and no coolant in the oil plus no overheating and I would be confident to fix whatever else is causing the codes, if they hang around.

 

[Chrispittman70]

Thanks for your help everyone. All the fluid levels and colors seem okay to me. I added coolant last night and cleared the codes then I ran the engine for 20 minutes or so with no issues and 0 codes now so at least I won't have to get it towed into the shop.

 

[BillG]

I would still check for exhaust gasses in the coolant. I think you can borrow a tester from the auto parts stores from their tool rental (pay for it, use it, get your money back when you return it) program, but they are typically only about $35 if you want to buy your own. You'll still have to find your coolant leak too, of course. Glad you didn't (it would seem) cause any permanent damage!

 

[Chrispittman70]

I would still check for exhaust gasses in the coolant. I think you can borrow a tester from the auto parts stores from their tool rental (pay for it, use it, get your money back when you return it) program, but they are typically only about $35 if you want to buy your own. You'll still have to find your coolant leak too, of course. Glad you didn't (it would seem) cause any permanent damage!

My 2006 Sienna started making a funny clicking noise but I couldn’t safety pull over for another half mile. When I finally did it was overheating steaming like crazy. The oil and coolant levels seem okay but it’s throwing codes P0117, P0332, and P0327. I’m afraid my engine is fried. If the engine gets hot enough to break the block sensors is it worth fixing?

Update: I took the van for a radiator flush and the underside of the cap had blue crystals around it. I assume it was from the bluedevil head gasket sealant I used a while back. On further inspection, I noticed the plastic thermostat cover going from the radiator hose to the engine was cracked and had grey sledge inside. So, I replace the thermostat cover and the thermostat itself. Now I’m in the process of flushing the radiator. Thanks again everyone for your helpful advice