Got my Scangauge II!

[cpg]

So post up some coolant temp #s. Steady state on the freeway, full throttle uphill, cruising around town.

175 to 185 normal range
170 coasting
180 cruising at 70 mph 85 degrees f
185 stopped at long light after moving it will go back towards 180
190 on steep grade towing trailer
after turning the motor off it can climb to 200

This is with like new cooling system with on a 96 with 185k miles

 

[NaterGator]

195-202 in summer stopped in traffic with the AC on
193-198 at 75mph in summer with the AC on
191-197 in summer with the ac off

Thermostat opens at 190°F, is fully open ~ 200°F

with a new fan clutch and 6k fluid.

 

[zcruiser]

Crap I wish I had OBD-II

 

[Cruiserdrew]

Thanks for the numbers, now I want one!

 

[rockclmbr]

70deg ambient temps in flat freeway driving = 180-195F

55deg ambient temps on steep hill in Big Sur in 2nd gear = 225F

This weekend I'm installing a new Rad, Fan Clutch, and H2O Pump = Priceless

 

[Trunk Monkey]

105* ambient, 140* intake, 215* WT with AC on in traffic
95* ambient, 120* intake, 195* WT with AC on freeway speeds

I've really learned to monitor boost from the supercharger and how much it affects temperatures. I pulled a small trailer up a gentle grade and was able to keep things cool.

 

[corsair23]

Thanks for the numbers, now I want one!

What I have noticed is the stock gauge stops moving around 150F-160F or so per the Scangauge. I've only seen the stock gauge move up from there once. Coming back from Moab towing a 3500# popup camper, the family, and all our gear. ~25mph, 1st gear, coming up Vail pass and then Eisenhower tunnel and the gauge starts moving up...Scangauge stated the temp was ~215F when the stock gauge started showing movement and showed the temp peaked about 220F-225F or so as I reached the summits, just about the time I was ready to soil myself . Stock gauge was reflecting maybe 3-4 needle widths above horizontal at this point. This was before a new fan clutch.

So, I figure my stock temp gauge has a dead spot of 55F-65F and once it starts moving up it moves up REAL quick

Current numbers after new fan clutch:

Around town: 193F - 198F typical
70+ on the highway, 90F+: 202F typical
Highway + any sort of hill: up to 206F

 

[alaskacruiser]

175 to 185 normal range
170 coasting
180 cruising at 70 mph 85 degrees f
185 stopped at long light after moving it will go back towards 180
190 on steep grade towing trailer
after turning the motor off it can climb to 200

cpg- is this from your Scangauge? Your numbers sound low. Any mods to your cooling system?

 

[cpg]

cpg- is this from your Scangauge? Your numbers sound low. Any mods to your cooling system?

The new blue fan clutch was adjusted with Land tanks mod and filled with 7k oil.
Before doing that the numbers were about 5 degrees warmer.
Radiator, Thermostat, and water pump are new toyota with about 10k miles on them. For me the old 175k original fan clutch cooled better than the new blue one before it was modified.


Using 50/50 prestone/distilled.

Yes from the scan gauge

It has hit 195 while climbing but by adjust gear and driving speed I can get it to go to 190.

Before new parts I was hitting 215 often and pretty easily. With a gauge you can modify how you are driving to keep it cooler.

 

[JO MAOMA]

175 to 185 normal range
170 coasting
180 cruising at 70 mph 85 degrees f
185 stopped at long light after moving it will go back towards 180
190 on steep grade towing trailer
after turning the motor off it can climb to 200

Thermostat opens at 190°F, is fully open ~ 200°F

what am i missing, is someone not running a oem thermostat or is
cpg's rig essentially air cooled even when towing on a steep grade....




....maybe my rig needs more work on the cooling system than i thought. :whoops:

 

[NaterGator]

what am i missing, is someone not running a oem thermostat or is
cpg's rig essentially air cooled even when towing on a steep grade....




....maybe my rig needs more work on the cooling system than i thought. :whoops:

Just my experience. There is probably some variance and I don't know what most others see.

The FSM test procedure states that the thermostat should open between 176-183°F and lift at least 10mm by 203°F. Perhaps I just need a new tstat.

 

[e9999]

interesting

can one set an alarm on that reader?

Hard to believe that the mpg readings would be very accurate. What sensors -if any- does it use for that?

 

[FirstToy]

Wow, I'm surprised by my readings! This is just in-town today
ambient temps (95-100 degrees)
air intake temps (145-172)
Air Conditioner ON the whole time
stock temp gauge never moved from horizontal

-from cold to 185-190 (city streets, stop n go, easy)
-195-198 (freeway)
-parked for 15min -
-213 on startup-heat soak! (172 intake air temp), quickly went down to 193
-200-204 (freeway, slight grade)
-198-204 (city streets)

 

[cpg]

what am i missing, is someone not running a oem thermostat or is
cpg's rig essentially air cooled even when towing on a steep grade....




....maybe my rig needs more work on the cooling system than i thought. :whoops:

oem THERMO STAT. Just last weekend going up highway 17 never went over 190 going down went down to 170.

 

[FirstToy]

cpg,
wonder how your temps are so low? maybe I need a new radiator?
I have new fan clutch, t-stat, coolant, rad in good shape...

170-190 is a big difference than mine doing 190-204...

*oh i noticed the side plug on the Scangauge so i flush mounted right on the edge between the insturments and steering colum- shielded from glare, doesn't block the warning lights.

 

[cpg]

cpg,
wonder how your temps are so low? maybe I need a new radiator?
I have new fan clutch, t-stat, coolant, rad in good shape...

170-190 is a big difference than mine doing 190-204...

Thats why I replaced the radiator. When I did ravens mod on the stock gauge I was shocked how often it was getting near the red. I had the scan gauge for a while before I changed out the cooling parts and was getting over 200 often but only when there was a hill involved. I think my old fan clutch cooled better than the new blue hup before it was modified. But after modifying it it seems to keep it about 5 degrees cooler. My intake air temps seem lower than most to I have never seen it over 145. I have a long copper pipe for my shower I dont think it helps cool any more maybe it does runs almost the length of the block?

The pic of the scan gauge was last March in Baja about 90 degrees outside.
This is before I modded the fan clutch. On any grade it would rise to 195. After modding it I can keep it around 190.

 

[Trunk Monkey]

Hard to believe that the mpg readings would be very accurate. What sensors -if any- does it use for that?

Very accurate. You reset when you fill and it learns. Miles driven divided by fuel used, pretty basic.

 

[e9999]

Very accurate. You reset when you fill and it learns. Miles driven divided by fuel used, pretty basic.

and how does it know accurately the fuel used, exactly?

 

[e9999]

cpg, I wonder if there is something off with your gauge or sensor or thermostat?

if the thermostat starts to open around 180-185, it is highly unlikely you would get any lower than that coasting down at high temperatures outside since the fan / rad are no longer in the picture when the thermostat is closed.

 

[NaterGator]

and how does it know accurately the fuel used, exactly?

Because it can calculate the GPH based on the parameters the ECU provides.

Trust me, it's accurate. Always within 1% all said and done at the end of the tank.