+ Reply to Thread
Results 1 to 5 of 5
  1. #1
    VXRed
    Join Date
    11th July 2017
    Posts
    102

    Question Engine temperature ... ?

    Hi... noticed the last few days when morning temps are down below 5c that even after a 15mile drive the engine temp doesn't get above about 75c and the oil in turn is 50odd.
    Ok...im driving gentle but do these cars have any known thermostat issues as to me it's behaving as if the stat is stuck open.
    I know the car sat in the dealers about 6 months before I got it so could that have caused a problem ?
    It's under warranty but I've no time to get the car to them.

  2. #2
    Are you VXR enough? Dalle1985's Avatar
    Join Date
    17th September 2011
    Posts
    837

    Default

    As I remember, mine was hot within 5-10 minutes no matter what the outside temperature was, so could sound like a thermostat issue. Does it ever come up to full temperature, i.e. On a very long drive?
    2010 Insignia OPC Sports Tourer

  3. #3
    VXRed
    Join Date
    11th July 2017
    Posts
    102

    Default

    Not lately with the cold weather creeping in.... was fine during the summer but I'd expect that with reduced air cooling over the rad core.
    It's screwing up the fueling as well ... dropped 5mpg on my work run.

  4. #4
    Are you VXR enough? Dalle1985's Avatar
    Join Date
    17th September 2011
    Posts
    837

    Default

    That is not at all unlikely with a failing thermostat - it is going to suck a lot of heat out of the engine and therefore increase fuel consumption. Have you tried to start the engine from cold with the expansion tank lid off? I would expect it only circulates the cooling water in the tank if the thermostat is locked open when the engine is cold.
    2010 Insignia OPC Sports Tourer

  5. #5
    VXRed
    Join Date
    11th July 2017
    Posts
    102

    Default

    Are these traditional stats in a weird housing or a smart stat controlled by the ecu?
    So far I'm finding the engine heats a little better if keeping the cabin heater at 25 or lower which allows the engine to get to just under the mid point of the gauge.
    She's due a service in a few weeks so at least it's a warranty job in my case.... doesn't look like a 5min job to change out.

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts