Engine Code (22)

[st2b]

Well I'm getting the code 22, read on the TSRM and it says it's the water temperature sensor.

1. I've lost alot of coolant in a day, yet it doesn't overhead (according to gauge)
2. Checked the Sensor plugs, gave em some canned air and cliped them back in
3. It drove about 30 miles perfectly.

And I don't want to add coolant because the coolant in it now is red and I don't know how to properly mix. It hasn't boiled over or anything I just don't know what it is. I searched for the code 22 and came up with loose hose fix's and stuff like that. I check my hoses and they are no leaking (From what I can tell)

Sorry to post a million threads a day, it's just 3 steps forward and 2 steps back. It's agrivating..

 

[AJ'S 88NA]

Well I'm getting the code 22, read on the TSRM and it says it's the water temperature sensor.

1. I've lost alot of coolant in a day, yet it doesn't overhead (according to gauge)
2. Checked the Sensor plugs, gave em some canned air and cliped them back in
3. It drove about 30 miles perfectly.

And I don't want to add coolant because the coolant in it now is red and I don't know how to properly mix. It hasn't boiled over or anything I just don't know what it is. I searched for the code 22 and came up with loose hose fix's and stuff like that. I check my hoses and they are no leaking (From what I can tell)

Sorry to post a million threads a day, it's just 3 steps forward and 2 steps back. It's agrivating..

What do you mean the coolant is red? Was there rust on the coolant sensor? The coolant has to be going somewhere if you are loosing it. If it isn't leaking then it's burning or getting into the oil. Notice any in the oil, or white smoke out the tailpipe?

 

[cuel]

Quote: "And I don't want to add coolant because the coolant in it now is red and I don't know how to properly mix."

Just adding straight water would be MUCH better than running with it low. From the code 22, I'd test the water temp. sensor(hint: Its in the EFI section, you'll find it ) and wiring, and replace as necessary.

 

[AJ'S 88NA]

Quote: "And I don't want to add coolant because the coolant in it now is red and I don't know how to properly mix."

Just adding straight water would be MUCH better than running with it low. From the code 22, I'd test the water temp. sensor(hint: Its in the EFI section, you'll find it ) and wiring, and replace as necessary.

Or at least 50/50, but you have to find out were the coolant is going. If it has rust in the system you might be able to get away with flushing the coolong system with a radiator flush, but it sounds like it has been overlooked for a while and straight water was added instead of coolant. I usally add 2 gal of antifreeze and top it off with distilled water. Checkers are very cheap at the parts store to see how well you are protected from freezing.

 

[jetjock]

^ 2 gallons? Isn't that near the system's capacity? More is not better when talking about antifreeze, especially when it comes to freeze protection:

http://tinyurl.com/ys7ltj

 

[AJ'S 88NA]

^ 2 gallons? Isn't that near the system's capacity? More is not better when talking about antifreeze, especially when it comes to freeze protection:

http://tinyurl.com/ys7ltj

Thanks JJ. That's good info to know. What type of antifreeze would you recommend, and go with the 60-40 mix?

 

[jetjock]

You're not in Alaska so I wouldn't sweat it too much. 50/50 will do

I use G-05 in all my vehicles including the Supra. It's a long life HOAT chemistry I consider superior to others:

http://tinyurl.com/hakgu

Course, you can't go wrong with Toyota's stuff either...

 

[st2b]

I mean the coolant is the red Toyota coolant (I think Toyota makes red coolant?)

My engine gets really hot but the gauge reads lower than halfway hot. Nothing boil over or anything, and it will drive fine, but I would rather not be stranded somewhere wishing I would have done something.

I've checked the upper radiator hose (Leading to thermostat) and it (where the thermostat is, not the hose) gets REALLY hot, but the engine (Valve covers) aren't as near as hot.

There is a small leak directly on top of the engine, I think the hose goes to the throttle body (I'll check later), but it's a pinpoint hole, and doesn't leak until squeezed, and then it shoots out (small amounts).


I don't know if thats my problem, but I'm thinking about flushing the radiator, replacing the thermostat and the hoses.

-Matt

Thanks for your replys everyone!

Edit: Interesting links Jet, thanks

 

[jetjock]

Yeah, it's either red or pink depending on whether it's straight or premixed. At least that's what I recall. I haven't used the stuff in years.

I neglected to point out I use G-05 because it's as close to a "one size fits all" coolant as you can get and when you have a bunch of vehicles it's a hassle to stock different stuff. That said it stands on it's own merits as a very good HOAT coolant.

Regarding your problem cuel knows of what he speaks. Code 22 can only be caused by the coolant sensor signal being above 4.8 volts or below 100 millivolts. That means either a wiring problem or the sensor itself. You can check the sensor with an ohmmeter but it's always better to measure voltage across it, preferably at the ECU connector. That said check it at the sensor first as it's where most problems occur.

 

[st2b]

I will check the sensor later, or take it somewhere to be looked at.

Thanks Jet!