So I got a question ,is this the right look for a 180 temperature on the gauge pictures would help


let me know thanks

 

No. Should be almost halfway when warm

 

Yeah that’s for 190 thermostat

 

Remember, these gauges, and their sensors, are notoriously inaccurate in their "normal" range. My pickup runs about the 1/2 way point when it's warmed all the way, with a good, 3-core radiator, and properly functioning 190° thermostat.
The 4Runner runs about the 1/4 area, after it's little "run high" during the warmup period. I don't know if it's accurate, low, whatever. I do know for a fact that it reads up over the top white line area when it over-heats. I blew the top tank off my 3-core, all aluminum, radiator once, my friend threw the water pump belt once, and I threw the water pump belt once. The ONE time I didn't replace the belts during my spring tune up. My friend ran the truck till it over-heated, let it cool, ran it till it over-heated, let it cool, etc all the way back to my house. It was a nice, 105° day in Yuma, too. Cracked the head. Some friend...
But the gauge DID show when it overheated in every case. Is it accurate in the "normal" temps? No idea. I don't have a remote thermometer, but I have tested the thermostat, and it operates as it should. I replace it every couple years, when I do the spring flush-n-fill.

Just my anecdotal evidence. All I can give.
Pat☺

 

180 or 190 are going to look very close. 180 is a couple millimeters less than halfway. Is that more accurate?

A properly working temp gauge is going to be abt half way if you have a working thermostat. Gauges that hit 1/4 and stop are not functioning properly.

 

Is a 190 what came in the 1990 22r stock? Any reason not to use a 180??

 

Mine registers barely over 1st line on low side. Switched from a manual gauge back to stock. Was spot on 195* when changed.

for EFI you want the 195* thermostat. Possible yours is carb’d.

 

So for efi it’s not ok to run 180?? I am not sure what’s in mine but when I install new I planned on a 180. Mines a efi 1990 and runs just under halfway with whatever’s in it now.

 

it’ll be ok Just take longer to reach and maintain optimal temp for EFI control.

 

Woah!

Hold on just a minute!

First of all, the factory thermostat for all 22R, 22R-E, and 22R-TE is an 88°C (or 190.4 °F) thermostat.

Second, when working properly, the factory coolant temperature gauge is accurate for its intended purpose.

The intended purpose of the gauge is to let the driver know if the engine is "cold", "at normal operating temperature range", or "overheating". This is what the vast majority of drivers want to know anyway. Most people don't care what the exact coolant temperature is just as long as it is "normal".

The main problem with these temperature gauges is that they do not read exactly the same from one old Truck to the next. The general "normal" range is 1/3 to 1/2 the way up the gauge. With these trucks being the age that they are, it is never a bad idea to check the temperature gauge / sender circuit and take an infrared temperature reading if you don't feel your gauge is reliably telling you accurate information.

 

couldn’t remember exact temp. Too lazy to go check FSM. Thanks for correction. Once you know what “right” looks like on your gauge it is just a reference.

 

This!!

If it's between the white and red vertical bars you typically wouldn't (shouldn't) care.

Your thermostat is effectively a switch that controls the flow of coolant, at its rated point it opens and let's coolant flow thru the radiator, you can test this in a pan of water heated on the stove with a thermometer (per your FSM).

You temp sender for the dash guage is testable in a similar way, a pot of water a few wire leads your ohm meter and a thermometer..

You can cross reference this resistance with the chart (in your FSM or from the sender's datasheet).

You can take this resistance value and a series of resistors or potentiometer and see exactly where you dash guage lands (it's going to vary a bit due to voltage and resistance of connectors in your specific vehicle)

.. Bottom line unless you have reason to think otherwise anything between the white and red is perfectly acceptable.

 

Agreed. If you want precise numbers you need an aftermarket gauge.

 

First let me say hello as this is my first post. You guys don't know it but you helped me rebuild the motor in my 94, thanks. I've done a lot of reading on here in the last six months so I thought I might as well go ahead and join.
As for the OP 's question, my 94 22re runs in the exact same spot with a 180 thermostat and I did check it with an infrared.