2003 vue won't start if temp under 32deg F - follow-up

[majacoby]

This is a follow-up from a previous thread called "2003 vue won't start if temp under 32deg F"

It’s been a while since I updated you all on this strange problem.
I have been getting the Vue started on cold mornings by using my 155k BTU kero torpedo heater blowing the heated air under the front so it heated up the engine compartment. After 10 minutes the Vue would fire up. It would run fine the rest of the day, as long as it wasn’t below 32 deg F and allowed to cool down for more than 6 hours. If it was below 32 and there was a good wind, it would not start.
One morning I did the above and after it started, I used a can of canned air upside down and sprayed the ECM to freeze it. The Vue shut off and would not restart until I blasted in with the kero heater. I repeated this twice. I now have a replacement ECM on order from AmeriCore Automotive. The only problem is I ordered it Feb 10th and have not seen it yet.
I’ll update once the ECM is swapped out.
Jake

[BobbyP]

I hope you didn't create a second problem that caused your VUE to stop with the cooling spray. You have to be very careful with that stuff. It can crack and destroy semiconductors easily.

Like Fdryer always suggests did you change, or test the CPS?

[majacoby]

Update - I still have not seen the ECM from Americoreauto. I keep calling them and they ran into a problem with a bad ECM on the 1st one. Americoreauto refurbishes ECM but tests they fully before they are sent out. (At least that's what they tell me.)
Jake

[fdryer]

Before or after receiving a replacement ECM, disconnecting the two electrical connectors for a close-up examination of the pins/sockets may reveal something that's contributing to this temperature sensitive ECM or the ECM suffered damage internally. Its very unusual for ECM's to be sensitive to temperature well within design parameters so finding out by trial and error does narrow down the origin of the problem. My guess is that ECM's are sealed from the elements and exposure to corrosion from humidity making it difficult to impossible to open one up for examination.