: Engine Temp????What does yours run at??



03blwn281
05-07-09, 10:16 AM
Ok I have owned my 05 V for 3 months and its starting to get warmer here in lovely Ohio. My car when its at its operating temp its around 212-220..
Is this normal...What is your cars temp at??? Please let me know

Thanks
Gus

03blwn281
05-07-09, 11:37 AM
Come on Fellas...Nobody pays attention to there ENGINE TEMP??
:tisk:

814V
05-07-09, 11:41 AM
after my tune mine runs exactly at 192.. i have the 160 t-stat so hopefully i can get it down around 185, been kinda lazy to install it. i can tell you before i tuned the car it would be about the same as yours

AlmostAV
05-07-09, 11:45 AM
mine runs in the 260's and gets up to 329. I live in Florida, but think I have one of those faulty temp gauges.<---- Is this issue intermittent?

MauiV
05-07-09, 11:45 AM
195. It will get into the 220 range sitting in traffic on a hot day but that seems to be pretty normal for LSx's They can run a lot hotter than an old school big-blocks from folks I have talked to

perfect
05-07-09, 11:49 AM
Since I am having coolant issues I watch my engine temperature like a hawk and it can get as high as 220+ if I've been running it long and/or been sitting in heavy traffic on a hot day

Engine oil temp gets up to about 200 as well

AlmostAV
05-07-09, 11:54 AM
my oil temp gets to the 300's quite often...while the coolant is 99% of the time below 200

PISNUOFF
05-07-09, 11:55 AM
With a 160 t-stat and my tune, mine stays right at 170 until the outside temp is over 50 then it goes to about 180-182. It'll stay around 210 on the track.

03blwn281
05-07-09, 12:10 PM
Thanks 814V....




after my tune mine runs exactly at 192.. i have the 160 t-stat so hopefully i can get it down around 185, been kinda lazy to install it. i can tell you before i tuned the car it would be about the same as yours

03blwn281
05-07-09, 12:13 PM
Thank you everyone for the response..I feel a little better now...This is worrying me thus every other car I have I sweat when the gauge goes over 190!!!

shadybx7
05-07-09, 12:22 PM
is there any negative side affects to running at a lower temp then stock??

lilgCTS-V
05-07-09, 12:47 PM
after racing thhe hottest ill get is 225 but driving normally is 195 sitting in traffic about 205 i have no complaints i think its pretty consistant

814V
05-07-09, 12:48 PM
is there any negative side affects to running at a lower temp then stock??

if more HP is a side affect :thepan:

i should also say that even sitting in traffic my motor never gets over 195 now

a motor can run to cool but it would have to be a lot cooler then 180-190. in my tune the electric fans come on at 120 and stay on 3 minutes after shut down to help with heat soak. when its 110 outside here in the summer my car will sit over night and the engine temp will never drop below 110-120

Slithering_Joe
05-07-09, 12:55 PM
On the highway I see coolant temps at 190-192*F. Driving around town I see 220-226*F. The highest I have seen it read was 235*F. I don't watch it all the time so I wouldn't doubt that it may have gotten higher.

My '96 Cobra was the first model year production with the 32V engine. Many people complained of cooling problems to where Ford supposedly upgraded the radiator and reduced the fin count on the A/C condenser to aid in cooling. Warranty would cover the cooling issue for '96 owners and Ford changed the design starting with the 1997 model year. Mine never received the 'cooling fix' due to some really dumb conditions that had to occur first before they would do the work. Anyway, many times I would see > 230*F+ temps for the 9+ years I owned it. Never did I have a problem. From that experience, I learned to worry about other things.


is there any negative side affects to running at a lower temp then stock??

I can't say anything specifically for the V but running too low of a temp in a computer controlled engine can cause some self-tests to not perform which could lead to a check engine light. Other things may occur: emissions may go up (a concern if your state does the 'sniffer' test); engine may not go into closed loop quickly enough or at all leading to lowering gas mileage; engine may run rich lowering gas mileage and causing cylinder wash; thermal efficiency may be lowered too. I don't think operating a 180*F thermostat would cause any problems. A 160*F may be pushing it but since the radiators in these cars are the bare minimum, the engine may still see 190*F+ temps on a warm/hot day.

Bueller
05-07-09, 02:19 PM
I read on here somewhere you need a tune to run a 180* or 160* tstat. Is that true? Too bad Rick isn't around anymore.

I live in Florida and would welcome a little cooler temps than the 220s.

Slithering_Joe
05-07-09, 02:30 PM
If the radiator can't keep the engine cool, it doesn't matter what thermostat is in there. It can only control the minimum operating temperature. The thermostat cannot control the upper temperature range if the radiator is not capable of removing the heat..

Twitch
05-07-09, 02:47 PM
Without a tune, 220 is normal.

Bueller
05-07-09, 09:52 PM
Yeah but I have a tune. It pings like a mother and runs around at 220. Too bad I don't have a bravarian motor works car.

Twitch
05-08-09, 09:44 AM
What do you mean pings?
Just a quick guess, but maybe you have a bad tune. Or they just didn't do anything with the fan settings.
Its not bad to be at 220, but I guess its better to be at 200.

verywhitedevil
05-08-09, 09:53 AM
176, even in Arizona baby

Slithering_Joe
05-08-09, 09:57 AM
176, even in Arizona baby
Stock radiator?

SuperVeee
05-08-09, 10:00 AM
Mine runs at 250 oil temp in traffic or pushing it on the highway. The dealer says that is OK however I would never run my old air cooled motor at 250. I think 250 is the cut off point if you use dino oil like I do in my old car. Not sure how high I can go with the Mobile synthetic I use in the V.

I hope either the gauge is not accurate in my car or the dealer is going to buy me a new motor if I kill rod or main bearing.

Rey
05-08-09, 10:18 AM
I have done a little research on optimum coolant temps, and found no real agreement. For instance, Smokey Yunick liked to run as hot as possible. Nevertheless, it seems the LS motors are sensitive to intake air temps, which is heavily influenced by coolant temps. Keep in mind also that coolant temps are not measured at the hottest areas of the motor, around the exhaust valves. For many years it seemed that coolant temps were maintained by 180 degree thermostats. With emission controls we have seen hotter running motors, which survive boiling-over through higher pressure radiator caps.
My experiences in a temperate climate are my CTS-V normally ran at about 192F. It ran hotter on idle and slow traffic like all cars do.
I tried a Lingenfelter "180" thermostat. Lingenfelter's themostats are a no-name brand that do not have the temp rating engraved on them. The result of the so-called "180" was to RAISE temps to 198F.
Then I installed a Lingenfelter "160", which I have now. My cruise temp is 182F.
Another problem, which was prevalant in the LT motors was steam pockets in the heads. Little hot spots would occur. Temps would rise well past boiling in these hot spots. Steam would occur, which in turn prevented coolant form contacting the metal. The LS series motors have addressed these problems better, but they still exist. As long as their is water in the coolant it is subject to possible steam pockets.
I addressed this problems by changing to Evans Coolant, which is waterless. It is expensive at about $30 gal. No change in coolant temp, but no pressure cap is needed now.
I have seen some posts worrying that a cooler temps will prevent the motor from going into a closed loop mode. The LS motor goes to closed loop very soon after light-off, and long before the coolant reaches "cruise temp." This can easily be verified by using a ScanGauge.

814V
05-08-09, 02:47 PM
176, even in Arizona baby

i need to put my 160 T-stat in.. its been bouncing around in my back seat for like 3 weeks. you should come over and help me install it lol. i need somoe motivation

bpitas
05-08-09, 03:34 PM
On the highway I see coolant temps at 190-192*F. Driving around town I see 220-226*F. The highest I have seen it read was 235*F. I don't watch it all the time so I wouldn't doubt that it may have gotten higher.

My '96 Cobra was the first model year production with the 32V engine. Many people complained of cooling problems to where Ford supposedly upgraded the radiator and reduced the fin count on the A/C condenser to aid in cooling. Warranty would cover the cooling issue for '96 owners and Ford changed the design starting with the 1997 model year. Mine never received the 'cooling fix' due to some really dumb conditions that had to occur first before they would do the work. Anyway, many times I would see > 230*F+ temps for the 9+ years I owned it. Never did I have a problem. From that experience, I learned to worry about other things.



I can't say anything specifically for the V but running too low of a temp in a computer controlled engine can cause some self-tests to not perform which could lead to a check engine light. Other things may occur: emissions may go up (a concern if your state does the 'sniffer' test); engine may not go into closed loop quickly enough or at all leading to lowering gas mileage; engine may run rich lowering gas mileage and causing cylinder wash; thermal efficiency may be lowered too. I don't think operating a 180*F thermostat would cause any problems. A 160*F may be pushing it but since the radiators in these cars are the bare minimum, the engine may still see 190*F+ temps on a warm/hot day.

I had that car too ('96 Mystic), and I got the heating fix. Not because it really needed it per se, but mostly because I knew I would have it on the track and wanted the extra cooling capacity. Basically they would only replace your stuff if you hit a "thermal shutdown" or limp home mode. I can't remember how I did it, but I spoofed that to get mine replaced. Of course when they did that they tried to do some other "fix" to a wiring harness and screwed it up before my first ever road-course event, resulting in me taking my warranty-provided rental (4 door Chevy Cavalier with 3 speed automatic tranny) to Louden. :-)

The tech-inspection guys thought it was awesome that my brother and I were racing a rental, kinda like the old days when people used to rent Shelby GT-350Hs to race for the day. :-)

bpitas
05-08-09, 03:36 PM
BTW - my car NEVER moves off of straight up on the analog gauge, which I believe corresponds to 190', no?

Slithering_Joe
05-08-09, 04:22 PM
Today was about 75*F. Mixture of stop/go traffic I was watching the gauge occasionally and I never saw it go over 221*F. As soon as it got on the highway it quickly dropped to 192*F.


BTW - my car NEVER moves off of straight up on the analog gauge, which I believe corresponds to 190', no?
In the Caddy, I can't recall any moment that the analog gauge ever passed the 12 o'clock mark no matter what the digital gauge reads. I bet when the temp exceeds a value then gauge will move again. I can't stand "smart clusters."

bpitas:
Ford/SVT wanted 3 documented thermal shutdown conditions before they would perform the 'cooling fix.' Really? Does it have to get close to death 3 times in order to save its life!? Then I've heard enough horror stories of the dealers hacking up a perfectly nice car to speed up the installations. Anyway, I learned to live with the high engine temperatures under extreme conditions. Those days that I had my scan tool, I never saw the temp go over 238*F. When I was on the track, I watched the gauge climb just shy of the red zone but the car never failed me. I have no idea what the actual temperture is when the gauge reads there. After driving the Cobra for 113,000 miles, it never left me stranded. It was just as fast the day I sold it compared to the day I bought it.
The '96 Mystic Cobras had a cool color scheme unlike the Mystic-Chrome on the '04 model in my opinion.

CTSV_510
05-08-09, 08:56 PM
after my tune mine runs exactly at 192.. i have the 160 t-stat so hopefully i can get it down around 185, been kinda lazy to install it. i can tell you before i tuned the car it would be about the same as yours

Are there instructions somewhere for installing the thermostat? I heard you have to drain the coolant and also heard that if you do it quickly you don't have to drain it.

814V
05-08-09, 10:45 PM
Are there instructions somewhere for installing the thermostat? I heard you have to drain the coolant and also heard that if you do it quickly you don't have to drain it.

i havnt looked around yet, i talked to a fellow member the other day that just installed the 160 and he said he lost about a gallon of dexcool. its easy to access so i am assuming its just like every other t-stat in the world. sucks that the dexcool is so expensive.

CTSV_510
05-08-09, 11:03 PM
A gallon? wow. If you get the concentrated stuff and mix it with distilled water it is much cheaper.

814V
05-08-09, 11:15 PM
A gallon? wow. If you get the concentrated stuff and mix it with distilled water it is much cheaper.

yea thats what i am gonna do. i have nothing to do monday so maybe i will tackle it then

verywhitedevil
05-08-09, 11:47 PM
put the 160 stat in and with StageUp tune modding the fans. added WaterWetter, I would not count on that helping, but what the hey. stock radiator. today temps were 105 and with the A/C on full, car never saw 185.

Installing my Billet Prototypes PCV can on Saturday, maybe even my BMR pinion suppot.

Last Weekend: STAGEUP tune, 160 stat, Cutout the bottom 1/4 of stock airbox and panel K&N with alll the plastic removed in fender and rubber snout. Unhooked the cooloant hoses to the throttle body.

I am telling you my car has NEVER run as good as it does right now. NEXT UP, Full B&B exhaust and Fidanza FW.

jmk2938
05-10-09, 12:51 AM
My 96 DeVille 4.6 runs between 203-206 and in stop and go congested highway crap, sometimes it'll hitt 222 then fans kick in and down to around 212 till we get going again.

C66 Racing
05-10-09, 02:58 PM
The below numbers are for the C5/C5 Z06 Corvette, but I suspect that GM uses about the same programing in the CTS-V and its other LSx engined cars.
:cheers:

When the car starts and the coolant is cold, the thermostat will remain closed so the fluid doesn't circulate to the radiator so it heats up faster. The thermostat will open at about 194 or so allowing fluid to flow to the radiator. Once your car is warmed up, the thermostat thus sets the low temp because if really cold air flows through the radiator cooling the coolant below 194, the thermostat will go towards shut, reducing flow to the radiator and the coolant will remain at about 194.

On the high end, the temp is controlled by the fans. Though the fan setpoints appear to have varied slightly over the years, they are about: low speed on at 226, off at 219; hi speed on at 235, off at 226. So in stop a go traffic, it is not abnormal to see temps in these ranges.

Other things to consider are that when the AC condensor is on, the fans will run, thus if it is hot enough out for the AC to run and the fans are on, but the load on the engine is low or airflow through the radiator is high, the temp will go down to the 194 range where the thermostat will go closed again.

The car can reach an equilibrium in between 194 (thermostat closes) and 219 (fans come on) dependent on engine load and airflow/airtemp flowing through radiator, thus you see many guys say their car runs near 200-210.

Paisan
07-01-09, 10:51 PM
Subscribed, I'd be curious what everyone's:

Coolant
Oil Pressure
Oil Temp
Trans Temp

are running in summer weather. I just got a new to me 05 V and want to make sure I'm in the proper range.

-mike

richdash
07-02-09, 02:02 PM
My oil temps reached 300 yesterday after some hard driving for about 45 minutes in around 100 degree temps... worried me a bit... I'm going to change the oil just to be safe and look into anything else that can help...

CtsVrod
07-02-09, 02:08 PM
My oil temps reached 300 yesterday after some hard driving for about 45 minutes in around 100 degree temps... worried me a bit... I'm going to change the oil just to be safe and look into anything else that can help...

VERY common problem with these cars... I've had it for the last year, still unable to fix it... something wrong with the Elect. system

richdash
07-02-09, 02:33 PM
Oh ok, glad im not alone...

CadiBlk
07-02-09, 03:42 PM
My oil temps reached 300 yesterday after some hard driving for about 45 minutes in around 100 degree temps... worried me a bit... I'm going to change the oil just to be safe and look into anything else that can help...

I was tuning my car couple weekends ago with a friend and my oil climbed to 300 and the dings and whistles went off. I was doing extended pulls at high RPM for about 50 mins. I was also concerned, but the gauge in HP tuners said that my oil temps were about 20 degrees below that. I think that is just GM putting the fear in us so we don't seize our blocks.

Oil changes never hurt, mine needs one in a couple weeks. :highfive:

Tao_Haus
07-02-09, 05:31 PM
t-stat wont bring real world temp down much, but will help btwn drag runs a bit. The fans cant be programmed to come on anywhere near 160. I did that mod to my LS2. The LS2 ran around 180-192, though I've heard the LS6s run hotter.

richdash
07-03-09, 12:11 AM
I was considering an external oil cooler.... I don't like my oil temps to get so high...