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Temp gauge goes up only a Quarter of the way!

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Old 01-04-2012, 02:06 AM   #1
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Temp gauge goes up only a Quarter of the way!

Hey everyone, so my 1994 s10 2.2 has been running without a thermostat for years before i got it.

i put one in after i rebuilt the engine and the temp gauge only goes a quarter of the way, is that normal?

The thermostat is the stock oem standard one, not the colder ones.

before my thermostat, synthetic oil, rebuilt engine, and a tune up (spark plug wires, gaps, clean fuel injectors, brakes, the whole nine yards) i was getting 15 mpg city

Now after all that im getting 20mpg city is that good?

thanks!
Old 01-04-2012, 02:26 AM   #2
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Re: Temp gauge goes up only a Quarter of the way!

You might have installed it backwards. I'd try flipping it around and see if that helps.
Old 01-04-2012, 02:32 AM   #3
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Re: Temp gauge goes up only a Quarter of the way!

I dont Think so cuz it doesnt fit the other way. does anyone elses temp gauge do the same thing?

Quote: Originally Posted by monkeytruckin
You might have installed it backwards. I'd try flipping it around and see if that helps.
Old 01-04-2012, 02:58 AM   #4
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Re: Temp gauge goes up only a Quarter of the way!

if its a cheap one it could be stuck open.
also, when my heater core was clogged, my temp gauge only went up about a quarter the way too.
and 20 mpgs is ok. i get 21. it all depends on how you drive, or if its auto or stick, or your rear end gear. there are other factors too but if its moslty stock 20 isnt bad.
Old 01-04-2012, 03:12 AM   #5
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Re: Temp gauge goes up only a Quarter of the way!

sounds good to me. Putting the thermo in backwards would put it in the red.
Old 01-04-2012, 10:58 AM   #6
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Re: Temp gauge goes up only a Quarter of the way!

yeah mine only goes about that far. the mark between 100 and 210 about. but a live data scan tool says it' running a lot warmer than what the guage shows. I put a new temp sensor in it and it never changed. I'm going with it's just a shitty guage.
Old 01-04-2012, 01:03 PM   #7
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Re: Temp gauge goes up only a Quarter of the way!

Mine runs 1.5 to 2 marks below the straight up 210
Old 01-04-2012, 01:25 PM   #8
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Re: Temp gauge goes up only a Quarter of the way!

Quote: Originally Posted by Ed98
Mine runs 1.5 to 2 marks below the straight up 210
Ditto
Old 01-05-2012, 09:52 AM   #9
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Re: Temp gauge goes up only a Quarter of the way!

What size thermostat did you put in? Its supposed to have a 195 Degree.
Old 01-06-2012, 07:32 PM   #10
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Re: Temp gauge goes up only a Quarter of the way!

my truck used to run just like that on the quater mark, i rust change the water pump and thermostat and now is always running just below the 210 mark just like 3 or 2 lines down. i hope it does just the same with my a/c on during summer
Old 01-13-2012, 04:10 PM   #11
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Re: Temp gauge goes up only a Quarter of the way!

i put the oem replacement 195 degree thermotat. it wasnt the cheapest thermostat, i went with the midrage one to avoid things like that. i just rebuilt my engine and i replaced everything but the water pump, but it seems to be working fine.
Old 01-13-2012, 04:37 PM   #12
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Re: Temp gauge goes up only a Quarter of the way!

here u go
Attached Thumbnails
Temp gauge goes up only a Quarter of the way!-temp-gauge.jpg  
Old 01-13-2012, 04:47 PM   #13
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Re: Temp gauge goes up only a Quarter of the way!

You think your fan clutch may be stuck on? Does it have a roaring noise from under the hood as you accelerate? That would support the complaint of lower gas mileage as well-
Old 01-13-2012, 04:59 PM   #14
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Re: Temp gauge goes up only a Quarter of the way!

well shouldnt it be on while im excelerating? my fan is always on (i only see it when its stopped and its at idle)
Old 01-13-2012, 05:05 PM   #15
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Re: Temp gauge goes up only a Quarter of the way!

A. Does it have a roaring noise from under the hood as you accelerate?

B. (With the engine off) turn the fan blades with your hand. Does it spin pretty easily? Or does it feel rough and grating? Is it kind of hard to turn? It should be really easy.

C. (With the engine off) next try to wobble the fan front to back. Does it wobble more than 1/4"?
Old 01-15-2012, 09:34 PM   #16
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Re: Temp gauge goes up only a Quarter of the way!

This is as high as my temp goes.

Old 01-15-2012, 09:52 PM   #17
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Re: Temp gauge goes up only a Quarter of the way!

could be an incorrrect sensor or the gauge out of calibration...hard to say.

You need a tachometer though.
Old 01-17-2012, 12:22 AM   #18
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Re: Temp gauge goes up only a Quarter of the way!

This is excatly how mine is. is that normal?


Quote: Originally Posted by TC-S10
This is as high as my temp goes.

Old 01-17-2012, 12:23 AM   #19
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Re: Temp gauge goes up only a Quarter of the way!

i have an aftermarket tach.... hows the tach going to help here tho?


Quote: Originally Posted by deathphoenix99
could be an incorrrect sensor or the gauge out of calibration...hard to say.

You need a tachometer though.
Old 01-17-2012, 12:24 AM   #20
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Re: Temp gauge goes up only a Quarter of the way!

its pretty easy to move, its not rough or hard at all. it has no forward, backward play

Quote: Originally Posted by Ed98
A. Does it have a roaring noise from under the hood as you accelerate?

B. (With the engine off) turn the fan blades with your hand. Does it spin pretty easily? Or does it feel rough and grating? Is it kind of hard to turn? It should be really easy.

C. (With the engine off) next try to wobble the fan front to back. Does it wobble more than 1/4"?
Old 01-17-2012, 07:29 AM   #21
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Re: Temp gauge goes up only a Quarter of the way!

Quote: Originally Posted by 1994ricers-10
its pretty easy to move, its not rough or hard at all. it has no forward, backward play
Well then your fan does not seem to be overcooling your water.

It is the job of your thermostat to regulate the temperature at any given point.

Either your thermostat is stuck open, or your coolant is slightly low.

If you open your radiator cap when cold, at any time, the radiator should be brimming full. A non submerged temperature sender or sometimes non-submerged temperature sender is going to give a low reading.



If your coolant is low, top it off with the proper mix of concentrate and water. Be sure the plastic bottle also has the mix in there between the marks.

If your coolant is low again later, find out why. Check the cap. A bad cap could fail to let coolant be drawn from the bottle.

There are something called tempil sticks that melt at given temperature.

You can rub a 188* stick and a 206* stick on the thermostat housing and observe what happens. With your complaint, neither will melt.
Old 01-17-2012, 02:30 PM   #22
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Re: Temp gauge goes up only a Quarter of the way!

are the termostats located in the front or the side of the engine?

upper or lower hose?
Old 01-17-2012, 02:32 PM   #23
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Re: Temp gauge goes up only a Quarter of the way!

It is at the end of the upper hose where it bolts to the engine.
Old 01-17-2012, 06:11 PM   #24
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Re: Temp gauge goes up only a Quarter of the way!

Quote: Originally Posted by 1994ricers-10
This is excatly how mine is. is that normal?
I have been told by more than one person on this forum that it's normal. I have not had any problems.
Old 01-17-2012, 06:29 PM   #25
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Re: Temp gauge goes up only a Quarter of the way!

I can't make head or tails out of the marks on the S-10 temperature gauge.

It starts at 100, it's midpoint is 210 and the right side is 260.

So from the middle to the left is 110 degrees; and the middle to the right is 50 degrees. And there are 8 divisions on both sides of center. (You can scroll up and see an IP cluster.)

I didn't notice this until lately.

When I have time, I'll figure out what it is actually running at with a thermometer.
Old 01-17-2012, 07:04 PM   #26
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Re: Temp gauge goes up only a Quarter of the way!

If I remember I'll check mine with the ultragauge tomorrow.
Old 01-17-2012, 07:39 PM   #27
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Re: Temp gauge goes up only a Quarter of the way!

use a lazer temp gauge on radiator hose
Old 01-17-2012, 10:49 PM   #28
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Re: Temp gauge goes up only a Quarter of the way!

My ultragauge reads direct from the OBD2 data stream. Close enough for me.
Old 01-18-2012, 01:18 AM   #29
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Re: Temp gauge goes up only a Quarter of the way!

Mine sits right between the gauge needle and the 210 at operating temp with a 180 stat and an E-fan. My fan switch turns on at 197 and off at 185. It is an 03 2.2.

Old 01-18-2012, 01:42 PM   #30
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Re: Temp gauge goes up only a Quarter of the way!

My coolant is always full, i check it twice a week.
i dont think the thermostat is stuck open because its new and if it were stuck open it wouldnt build temp. it would stay at 100 (my truck had no thermostat when i got it and it wouldnt lift off 100)
my cap holds pressure, and i dont have any coolant leaks.

Does your s10 stop a quarter way or right before 210?


Quote: Originally Posted by Ed98
Well then your fan does not seem to be overcooling your water.

It is the job of your thermostat to regulate the temperature at any given point.

Either your thermostat is stuck open, or your coolant is slightly low.

If you open your radiator cap when cold, at any time, the radiator should be brimming full. A non submerged temperature sender or sometimes non-submerged temperature sender is going to give a low reading.



If your coolant is low, top it off with the proper mix of concentrate and water. Be sure the plastic bottle also has the mix in there between the marks.

If your coolant is low again later, find out why. Check the cap. A bad cap could fail to let coolant be drawn from the bottle.

There are something called tempil sticks that melt at given temperature.

You can rub a 188* stick and a 206* stick on the thermostat housing and observe what happens. With your complaint, neither will melt.
Old 01-18-2012, 03:21 PM   #31
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Re: Temp gauge goes up only a Quarter of the way!

>>>Does your s10 stop a quarter way or right before 210?


If it's hot it is 1.5 marks left of 210. If it's cool, it's 2 marks left of 210.

That's its cut-in/cut out range.

It is never 4 marks to the left of 210 once warmed up.

I'm going to go scorch my face and measure the maximum heater temperature now. And my heater core is new, and my cooling system pristine. Be right back.
Old 01-18-2012, 04:17 PM   #32
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Re: Temp gauge goes up only a Quarter of the way!

174 degrees is as hot as I can get the heater output @ 3400 rpms.
Old 01-18-2012, 07:00 PM   #33
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Re: Temp gauge goes up only a Quarter of the way!

Pics:



Old 01-18-2012, 10:22 PM   #34
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Re: Temp gauge goes up only a Quarter of the way!

I just drove to Subway, and when my gauge got 1/2 way to 210, I tried to imagine what it would be like if it got no hotter... And I think I'd be complaining about inadequate heat.

I usually still have my control on full hot and the fan on hi at that point.
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