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Interesting thing just happened, has anyone had this happen before?
Just took my '13 991 C2S to run an errand (not for a long drive) and it's not hot out (~70 degrees F) and after 20 min I saw the "engine too hot message" (see pic below) and also notice how hot the engine temperature was on the gauge.
I did not have AC on more than 1 bar of strength. Have never seen that message before. Fortunately I was near home and turned her off promptly. Nothing leaking out of the car. I contacted service advisor to see if I need to bring her in.
From what I've been told the changeover valve shouldn't cause an overheat. Not sure if it's true but I've recently had both of them replaced and only got the yellow light and no overheating. The second was daily driven in Houston for three weeks before going in. There's also a known vacuum line issue depending on your yeR but it also shouldn't make it over heat. Interested to see if this is potentially a thermostat or hopefully just a sensor failure. How long was it pinned at that temp? Any weird noises or power loss?
+1 Lexter! An unchecked gauge might as well be an idiot light.
Whoa fellas! Let's give him a break! 1st, who would expect this issue on a 70f evening errand and on an almost new car? And the gauge could have quickly jumped up there if there is (most likely) a malfunction in the car. Do you stare at that gauge when driving? He asks for input and you fry him.
Your dealer is your best bet buddy. Sorry for the poor response here. My membership expires soon, I'm not sure I want to be a part of this RL group!
Last 991 I've seen with overheating issues was RL member oldman in the Seattle area. Gravel, etc. lodged into and stopped both cooling fans. This is NOT COVERED by your warranty. Prompted me to install screening in both wells. Cost about $ 15. More here: Posts 84 & 89 https://rennlist.com/forums/991/842093-g-g-5.html
That's pretty friggin' far from a frying.....its sage advice. Do a scan of your gauges once a minute, its a habit all performance drivers get into. Hot engines blow head gaskets and melt valves, and can lead to an engine seizure if run hot long enough. I personally don't rely on idiot lights, never have - and am glad to see 911's still come with a full gauge package.
I was pulled over at the side of the road on a call with the engine idling for 5 min and noticed the air flow get warm from the vents. That's when I saw the message on the dash and the hot temperature. Fortunately I was close to home so drove there and let her cool down in the driveway. No power outage that I could feel in the engine. I didn't drive oblivious to the gauges.
Took her out driving again tonight and temperature stayed pegged at just under 200 and no more warning light so hopefully it was a glitch and won't come back. Will let you guys know.
I do have the rennline mesh installed within my front bumper so no leaves or junk can get on the radiators/fans.
I was pulled over at the side of the road on a call with the engine idling for 5 min and noticed the air flow get warm from the vents. That's when I saw the message on the dash and the hot temperature. Fortunately I was close to home so drove there and let her cool down in the driveway. No power outage that I could feel in the engine. I didn't drive oblivious to the gauges.
Took her out driving again tonight and temperature stayed pegged at just under 200 and no more warning light so hopefully it was a glitch and won't come back. Will let you guys know.
I do have the rennline mesh installed within my front bumper so no leaves or junk can get on the radiators/fans.
I'll agree with 77tony -- I've seen this before, when radiator fan gets jammed by gravel entering from the front wheel well grill.
riozilla - the fans we are referencing are NOT protected by those rennline mesh grills you installed. Those will keep junk from collecting against the radiators inside the front bumper cover, but won't protect the fans immediately behind them. If you look inside the front wheel well, you will see the vent opening that isn't all that well protected from small rocks. Just behind the opening are the radiator fans. I've seen rock get in there.... if one gets jammed in the fan blades you burn-out the motor, and the whole thing has to be replaced (not under warranty unfortunately!).
Here's a pic for reference (front driver side wheel well):
The GT3 I believe has a different design of this vent offering more protection.
05-20-2015, 09:46 PM
Engine too hot - park vehicle to cool down
