Author Topic: another cooling issue (Read 2822 times)

stihlmohawk · « **on:** Jun 21, 2012, 05:43:26 AM »

after blowing my head gasket i replaced the head with a new one i replaced the fan clutch,water pump,thermostat and a new v6 radiator am i missing something? my temp gauge reads at 1/2, i purged the coolant system for any air. I've tryed 180* and 160* thermostats and no change.
the runner runs great but i cant seem to get the temp to drop.any ideas? I've searched and searched for any answers but no one seems to post any results of theire issues....

85 4runner 22re...

thanx in advance.

tgmaul88 · « **Reply #1 on:** Jun 21, 2012, 05:51:14 AM »

take a heat gun and cheeck the real temp, I installed a new sensor once and my reading doubled check the temp still super low? Idunno lower hose is cooler check muliple points heater hose also are you building pressure at all? squeez the hose and see it it holds maybe a coolant line is plugged feel temp of hoses manually see if one is cold?

stihlmohawk · « **Reply #2 on:** Jun 21, 2012, 07:37:36 AM »

It's holding pressure fine and i checked the temp at the radiator and it read 145* but what i need to kno is the temp before the thermostat correct?

emsvitil · « **Reply #3 on:** Jun 21, 2012, 02:06:45 PM »

The toyota gauges are set up to stay towards the middle of the range no matter what the temperature (not much gauge movement for a large temperature change)

READ all about it here:

http://forum.ih8mud.com/80-series-tech/64252-93-97-coolant-temperature-gauge-modification.html

stihlmohawk · « **Reply #4 on:** Jun 21, 2012, 04:54:35 PM »

nice right up... but i already got an after market gauge ima put on it this weekend. the only thing that concerns me is that the gauge did read just above the cool line before the gasket incident. ill let you know the out come

junya92toy · « **Reply #5 on:** Jun 21, 2012, 06:50:38 PM »

WHy does it need to be lower then 145?

tgmaul88 · « **Reply #6 on:** Jun 21, 2012, 07:36:28 PM »

Well, the thermostat opens around 180*

stihlmohawk · « **Reply #7 on:** Jun 21, 2012, 08:24:06 PM »

Quote from: junya92toy on Jun 21, 2012, 06:50:38 PM

WHy does it need to be lower then 145?

i think 145 is pretty cool and i don't need it to be any cooler i was just wondering if the temp before the thermostat would be much differant. it would of probably helped if i asked that in my original post...the thermostat is working cuz the temp fluctuates 10-15*. i think a heat gun or good temp gauge would give me a more accurate reading then my wife's kitchen thermometer lol....

stihlmohawk · « **Reply #8 on:** Jun 21, 2012, 08:34:48 PM »

Quote from: tgmaul88 on Jun 21, 2012, 07:36:28 PM

Well, the thermostat opens around 180*

actually i had a 160* stat in it when i checked but now i got the 180* in it and its still only reading 165*.... maybe I'm just paranoid i guess...

stihlmohawk · « **Reply #9 on:** Jun 24, 2012, 08:50:05 PM »

So i installed an aftermarket temp gauge and its still reads 160*-170* guess im good for now.

tgmaul88 · « **Reply #10 on:** Jun 26, 2012, 05:55:57 AM »

I your worried hook up an electric fan on a switch, do you have your fan cowl installed? that makes a huge difference that temp seems fine

stihlmohawk · « **Reply #11 on:** Jun 27, 2012, 05:14:50 AM »

After researching i found that the proper operating temp is around 180*-190 so im not worried about running around 170*. And yes everything is properly installed. Another question i have is does that temp sensor affect any of the cold start or idol sensors? Its running good but i just wanted to make sure.

Ferg · « **Reply #12 on:** Jun 30, 2012, 09:29:22 PM »

Does your thermostat have a 'breather' hole in it? It keeps the air from getting trapped behind the t-stat. If not drill an 1/8th inch hole in it. Then run it.

stihlmohawk · « **Reply #13 on:** Jun 30, 2012, 09:41:21 PM »

Yes it does... its running great. I was just concerned with the temp gauge in the dash reading at 1/2 apposed to 1/4 before i blew the gasket, but with it running where it is im confident to take it out. I got a 5 day weekend this week so im gonna take it up to red/coyote to see how it does.

junya92toy · « **Reply #14 on:** Jul 01, 2012, 12:09:28 AM »

Dont need a breather hole, just need to burp it

stihlmohawk · « **Reply #15 on:** Jul 01, 2012, 06:38:15 AM »

Im burped and ready to rock. I'll let you guys know how she runs after i hit the trail. Thanx for the help.

stihlmohawk · « **Reply #16 on:** Jul 08, 2012, 06:42:46 AM »

After a ful day of wheeling my temp never got above 185*. After market gauge = peace of mind.

tgmaul88 · « **Reply #17 on:** Jul 08, 2012, 07:30:37 AM »

good deal, On a side note to your question if your running the 22re the temp sensor does have input to the running settings, we worked on a 2.5 suby had a bad temp sensor and a bad o2 sensor would not idle at all. changed both purred like a kitty. they help things run clean when the readings are acurate, but if your 22r disregard, mainly this is for the newer type computer systems where electrical input is key. glad shes staying cool

stihlmohawk · « **Reply #18 on:** Jul 08, 2012, 11:11:23 AM »

it does have two diffrent sensors one between the 2/3 cyl and one on top of the thermostat itself. the one between 2/3 cyl went to the gauge on the dash with a single wire which is where i put the after market gauge and the other has two wires and does nothing if i unplug it but i can assume that is the one that talks to the computer.

Cheng Lo · « **Reply #19 on:** Jul 09, 2012, 08:37:06 PM »

You're correct. That other senior is the thermo switch sensor. It talks to the ecm.

stihlmohawk · « **Reply #20 on:** Jul 09, 2012, 08:51:20 PM »

thanx man that is what i was hoping to hear

Cheng Lo · « **Reply #21 on:** Jul 09, 2012, 10:00:26 PM »

No problem. It's part of the EFI system. Search YouTube for 22re performance, they have a video on there on how to check that sensor.

stihlmohawk · « **Reply #22 on:** Jul 10, 2012, 05:14:03 AM »

Quote from: clo_ge8 on Jul 09, 2012, 10:00:26 PM

No problem. It's part of the EFI system. Search YouTube for 22re performance, they have a video on there on how to check that sensor.

Will do...

Cheesemaker · « **Reply #23 on:** Jul 10, 2012, 09:45:40 AM »

Quote from: clo_ge8 on Jul 09, 2012, 08:37:06 PM

You're correct. That other senior is the thermo switch sensor. It talks to the ecm.

The thermo switch activates the cold start injector.

What type of aftermarket gauge you using? The ones I've seen you have to splice a tube in the radiator hose, and it has a sensor in it. I want to put in a pillar cluster with real gauges.

Cheng Lo · « **Reply #24 on:** Jul 10, 2012, 01:03:55 PM »

Cold start injector has its own switch. Looking from the front of the engine, water thermo sensor and cold start switch are right next to each other on the intake manifold. Water thermo sensor is the one closest to the engine block. If you have the fsm, refer to FI-63.

stihlmohawk · « **Reply #25 on:** Jul 10, 2012, 04:26:53 PM »

I used a cheap mechanical gauge from auto zone for now. In place of the sensor in the first pic but i left the one on my thermostat alone. (2nd pic) sorry for the poor pics im using my phone. But if you need a better one let me know.

stihlmohawk · « **Reply #26 on:** Jul 10, 2012, 04:36:10 PM »

Quote from: Cheesemaker on Jul 10, 2012, 09:45:40 AM

The thermo switch activates the cold start injector.

What type of aftermarket gauge you using? The ones I've seen you have to splice a tube in the radiator hose, and it has a sensor in it. I want to put in a pillar cluster with real gauges.

I have another thermostat housing that im thinking about using because it has two different spots to add an extra gauge
Here is another crappy pic....lol

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