Been a minute,
Relocated to the country was on my way to work this morning, noticed after a while my coolant temp went - - - pulled over to shut the car off see if it went away on restart and then my car wouldn’t start at all ..

any ideas?

 

Car wouldn't start or wouldn't turn over at all? I also forget if you have a manual, if you do can you push start it?

Going from memory the --- on the coolant temp is related to a fuse sometimes but I can't recall which one.

 

Seemed to turn, just not over. Injectors we’re firing forsure, maybe no spark tho
its an automatic.
Edit: it started now. Still reads - - -, oddly enough my areoforce gauge reads a temp though

 

Terminology check... are you saying that it was struggling to turn the engine over (starter running slow)... or that it was starting regularly, just not firing?

Edit: sounds like it is working now. I'm guessing it just wasn't firing.

 

i think it may have tripped a protective mode not having a coolant temp signal which prevented ignition for a set time.

 

Scan tool showed good temperature on the way home 187F, cluster showed nothing.. Don't think it's the thermostat or ECT sensor, there was freezing rain yesterday... when I drove to work this morning my heat exchanger was covered in a sheet of slush, wondering if that had something to do with it lol... Cleared the code, see if it comes back tomorrow

 

Glad to see you back in the game my brotha lol. I ended up having to buy a new water pump because my car was running hot all the time. I got a new radiator and thermostat but it only helped a little lol. It wasn't until I saw my temps continue to go up I knew it might be the water pump. I would check to see if the pump is leaking from the rear of the engine or at the side.

 

yooo! Sorry bro I went MIA there. What a crazy year… Ended up quitting my job months ago, took some time to relax. Now I’m a Parts Manager for a small dealer, living the country life!
Damn, I’ll log tomorrows drive to check the temp across the whole drive. My scan gauge read a healthy peak temp. I’m hoping the rad was just completely blocked this morning and the computer realized it got up to temp way too quickly or something.. might throw an ECT sensor at it, the thermostat was replaced about a year ago. I really hope it’s nothing major haha, definitely need to change the oil now though the car sounds nasty (I got a bad habit of cranking it too much on no starts) my oil smells like straight gas

 

I wouldn't think the slush on the heat exchanger was the issue. I would lean towards it being an issue with an ECT sensor. Also, I believe the Interceptor pulls its info from the PCM, while the cluster is supplied its info from the BCM.

 

Peaked 85C on my way to work today, averaged about 83C. Code didn’t come back all was swell, guessing it was a one off event

 

Your comment sparked a sidebar thought. I haven't messed with the settings on my Cobalt... but if your DIC displays ECT in Celsius, does it also make the miles display as kilometers?

I like using °C, but don't want to use km. If I remember, I might just mess with it when I leave work today.

 

Changing 1 parameter to metric does change all of them to metric. I did my daily Cobalt the opposite as I prefer miles and the temp also changed to F.

 

I thought that might be the case. Oh well.

 

F is . Aeroforce gauges sadly only read in F.. I've had to memorize a few numbers

 

I am from before we went metric and I know some of it but I have just stayed the old way I was taught. I remember when Canada first went metric, there were decals given out that you placed on the speedometers so you knew how fast you were driving in metric.

 

Damn lol., I thought about a decal chart, but between looking at the gauge, the decal and the road thought it would just be easier to memorize a few numbers and from that just estimate, so I memorized every 4 degrees C to F

 

I did every 5°C since that perfectly equates to a 9°F change.

I've spent the last couple years teaching myself Celsius. There are a couple tricks that I use here and there - as well as having a couple conversions memorized (35°C = 95°F).

 

Interesting, I'll have to take another look at some charts see if every 9 is simpler

 

It is. A 4°C change relates to 7.2°F.

From memory:

0°C : 32°F
10°C : 50°F
20°C : 68°F
25°C : 77°F
30°C : 86°F
35°C : 95°F
40°C : 104°F

 

Long time no see guys. Did you resolve your coolant problems reading ---? I had that issue in my old 2.2. I changed the coolant temp sensor and still had the issue. I changed the tstat next and it fixed it. If the vehicle doesn't get to a certain on set time frame it will show up ---. Commonly caused by the tstat. Which could be why your interceptor is still reading temp. Showing the temp sensor is still good.

 

It resolved itself! There was freezing rain the day before and my heat exchanger was completely iced over on the day it went - - -.. I suspect the coolant temps may have rose to quickly or a ground was frozen

 

That makes sense. If it was cold enough maybe the temp didnt climb fast enough, glad it worked it self out.