Temp Gauge

[Ranger]

Any idea if that will work for the '03 Jim?

[Mccalist]

Just enabled electronic temp. readout on the seville - its running at 194 (on average) now, a couple of weeks after its coolant change.

The eldo is running at about 212 (on average). Problem?

I don't know but I think I'll test the pH. If it's too acidic I need more coolant, and if it's too basic I need more water. Hopefully this correction will help the eldo run a little cooler.

[Ranger]

Be advised that Dex is acid based. I'd use a refractometer instead of ph strips to test it.

[Mccalist]

Common item at repair shops? I've also read you can use a voltmeter to measure the resistance of the mixture - but not sure with dexcool.

Doesn't the anti-corrosive property of coolant work by inhibiting the acidity of the mixture? Also, one of the test strip producers claims that they work the same for green stuff and for dex-cool, or do you think this is just sales talk?

[Ranger]

I really don't kow. Maybe test strips do work. We have heard about the voltmeter test but the Guru advised against it, though I no longer remember the reason. I do know that the prefered method is with a refractometer.

[Mccalist]

Thanks Ranger - YOU DA MAN!!

[hotcrossbones]

You fellas are like angels. I had the same post-highway temp gauge fluctuation. Thanks.

[submariner409]

That sure is one way to bump a 2+ year old thread. Welcome !!!

hotcrossbones, Log into the user CP at the top of the page and insert your car and personal data. Then join CF..........

For your temperature gauge questions, depending on what make and model car you own, go back in Seville, Deville, and Northstar Performance and read up in threads of interest: 3 years worth of info. You'll be busy........

[pjw315]

I have a 2003 STS. On a hot day mine will hit the next white line after the middle one. Should I be concerned?

[submariner409]

Under what conditions will the temp gauge needle approach the next white line ?

Stuck in traffic with the a/c on ? Perfectly normal.

Cruising down the Interstate at 65 with the a/c on ? Worrisome.

Spend some $$$ at www.scangauge.com .

[wake]

Originally Posted by Ranger

Be advised that Dex is acid based. I'd use a refractometer instead of ph strips to test it.

Nope, I've turned the digital temp readout for the DIC on in a couple of previous Caddys, but the 03 doesn't seem to have the capability, at least none I could find in the shop manuals.

I guess GM doesn't want us to see the real numbers...

On my previous 94 and current 98 I've seen the temps reach 245F on the hottest days (110F+) climbing long grades across the SW desert and sitting in traffic with the A/C off. These engines just run hot.

[waxx1ne]

so what temp is it at when its in red

[osu411yamaha]

When its red its at the "pull over and call a tow truck" temp......

[Ranger]

Originally Posted by waxx1ne

so what temp is it at when its in red

Not positive, but I think about 250-260.

[HowardW]

<<< I don't know but I think I'll test the pH. If it's too acidic I need more coolant, and if it's too basic I need more water. Hopefully this correction will help the eldo run a little cooler. >>>



I've always thought that running a higher percentage of water will make the engine run a bit cooler, but you sacrifice the freezing point of the mixture.

As far as hot running aluminum engines, I use this stuff from Red Line called Water Wetter and it really makes a difference in making the engine run cooler, and it's safe for use with Dex-Cool antifreeze. It was expalined to me it works by treating the metal in the heads and block so the antifreeze makes better 'contact' with the metal thus pulling away the heat much more efficiently from hot surfaces. I originally started using it in my '87 Corvette with aluminum heads and it made the engine run at least 10 - 15 degrees cooler. As an aside, I also think their fuel system cleaner is the best I've ever used. Check out the Red Line website for more info.