flyfl1pguy

iTrader: (2)

dilemma here, replaced radiator, thermostat, and engine coolant temperature sensor. It gave me P0115 code so i was thinking that this will fix the over heating. WRONG!!!! Now Im stump on what else i need to do. Checked the relay for the fans and it seems to be ok. Haven't checked the fans if they working. Any ideas guys on what else i could be mission?

any inputs would be great. . .

LeX2K

That would be a really good place to start.

flyfl1pguy

iTrader: (2)

fan is working. just talked to my mechanic and he said the head gasket is blown.
boooOoOo. . .Time to let this baby go . . . .

synrgy350

What temperature does the engine get to before the code appears? You can use a OBD2 scanner to check the engine temperature. Is your water pump working? If the engine has in fact severely overheated, the head gasket may be bad. I wouldn't jump to conclusions though.

ViPeRs103

If you think the head gasket is destroyed, check to see if there is any coolant in the oil.. It will have a milky look to it.?

Chuckinnj

Take the advice of the above replies THEN Before you let the car go get a second opinion to verify that the head gasket is destroyed...... then (depending how bad it is) maybe you should try a cocktail like Blue Devil to seal the head gasket because sometimes a "band aid fix" can give you some extra miles. My theory is to do the job correctly and replace the gasket but some mechanics have good success by adding Blue Devil.

islandbeef

I did a quick search on this topic of the ES 300 overheating and it's unfortunately common with this model with numerous posts discussing this. Yes, head gasket replacement is the typical remedy fix for this issue.

The bad news: $975-$1000 for this repair at dealership, $750 for repair at independent mechs.

The choice is yours.

synrgy350

I should point out head gaskets are common for 92-93 ES300s with the 3VZ engine. 1MZ engines which were installed from 94-01 do not have head gasket issues unless the engine severely overheated.

flyfl1pguy

iTrader: (2)

spoke to a couple of other independent mech. and they also said it is the head gasket.

PFB

You could buy a do-it-yourself kit from an auto supply store, that determines if there are any exhaust gases in your coolant reservoir. Its not expensive, (less than $30) and is almost a sure way to eliminate the guess work as to wether or not your head gasket is blown

Alternatively, some garages, and radiator shoare have the kit and are equipped to perform that test for you.

Well worth it before you spend major money on a potentially unecessary head gasket repair.

Phil