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CTS V
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Discussion Starter #1
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
 

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05 PLATINUM CTS-V
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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
 

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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?
 

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Tis Gone :(
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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
 

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2005 Cadillac CTS-V Platinum
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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
 
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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.
 

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CTS V
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Discussion Starter #9
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
 

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CTS V
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Discussion Starter #10
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!!!
 

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2005 Platinum CTS V-Headers+3in pipes
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is there any negative side affects to running at a lower temp then stock??
 

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06CTS-V BOLT-ON,06JEEP TJ BUILT, 91 350SDL turbo(daily)
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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
 

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05 PLATINUM CTS-V
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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
 

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'05 CTS-V, Powered by Chevrolet
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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.
 

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CTS-V
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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.
 

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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..
 

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'05 CTS-V, '00 SLS, 98 SLS, 89 Eldo, '80 Eldo
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Without a tune, 220 is normal.
 

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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.
 

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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.
 
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