63-way-gone

1963 Chevy II wagon, LS1, 4l60e, 9"

G Atsma

180-190 should be about right

VandykeT/A

The stock 99 up gauges are dummy's they show 210 from about 170 until 230 ish. I would set the fans to come on around the opening of the thermostat. With a 160 I set mine for on at 178 off at 170. They'll still run in the 185 range with the fans running constant. If your running a 195 ( stock) I'd expect to see around 205-215 with a functional gauge.

tberg725

I have a 99 trans am and my stock gauge or "dummy gauge" as said just sits at 210 but on my tablet threw the torque pro app I can see it runs around 184

joecar

I was going to say: about 10-15*F above thermostat.

squarles67

My '55 runs right at 179 most of the time. It'll get to 185 or so when it's really hot out and I'm sitting still with the AC on.

CattleAc

iTrader: (7)

The wagon in my avatar, with a 5.3 and 4l60e...runs 185-190.

I have my primary fan turn on at 198, secondary at 205...I've never seen my second fan come on...

pantera_efi

iTrader: (1)

Hi All, the above tech is all correct.

I would add, the LH & RH LS heads are the same.
Thus the CLT sensor could be found in the front OR rear of the engine. (colder water/hotter water).
Many of my installs have the ECU, center of the car mounted, with the engine installed in the rear or backwards facing.
That common CLT sensor location is in the flywheel side head position.
That read is about twenty degrees COOLER that the front head location.

The Race Cars I work with have TWO Water Temperature gauges, one for engine inlet, the other for engine water temperature outlet.

Lance

axld

mmm, I am always thinking my car runs on the hot side, 180* thermostat, 3 core champion rad, dual 3100 cfm fans, fan 1 set on @190* off 180*, fan 2 on 210* off 195*. I think this is where the tuner set them. never had the second one on yet , but here in *alls hot FL my OBD gauge reads 195 in traffic and cools to 180/185 ish when moving.

axld

FYI, I am using the obd torque app also on a tab. as my mechanical failed.

01ssreda4

iTrader: (96)

For a STOCK car, depending on climate, the above is definitely incorrect. I live in the south and it was not uncommon for my car to see 215-225 during the summer. Low speed fan doesnt even turn on until 221 in a stock tune, so they are designed to run this temp. Lots of factors can control results and i prefer mine to be around 200 now a days.

00pooterSS

iTrader: (40)

It'll stay lower though with the a/c on since the fans come on during a/c command rather than temp command. You are right, the temp activation is pretty damn high for what we think it should be. I believe second stage doesn't come on until something like 237, been a while but it's up there.

00pooterSS

iTrader: (40)

This is all subjective to what vehicle (which gauge) what thermostat, and what fan control settings.

I agree with all information posted though. With 01ssredA4, I think he is referring to how high temps got with a/c off, the temp will go higher with ac off before the fans kick on. For example, like he said the OE table for low speed fan command is somewhere in the 22x range so you'll see the temp go to there before the fans come on. But if you're running the a/c the fans will come on regardless or based off a/c pressure. So you're much more likely to see it stay much closer to the thermostat's spec temp with the a/c on, since the fans are already on.