Assuming all that work was done properly, the likely issue is the radiator fan. It should operate with 3 speeds, sounds like it is only working in high speed.
Same here. I took one of the 4 old thermostats that went bad in past 8 months i had laying around and drilled holes in it. Then installed it. l also replaced temp sensor at block. Runs cool now. Maybe too cool but it beats running hot all the time.Problem, 2014 Chevy Cruze LT with 1.4L turbocharged engine overheats with no explanation. Will not overheat when sitting at idle but will overheat under load conditions like pulling an incline. First message is that AC has been turned off due to engine overheat condition. If temperature continues to climb the second dashboard message is Engine overheat, Engine in idle mode. At this point the temperature gauge may suddenly drop back to the normal range. When sitting idling the fan will cycle on and off briefly and temperature gauge does not move. I was told by one individual that if the AC is on the fan should always be on, but this is not the case. Turning the AC on does not cause the fan to kick on.
What has been done:
Replaced both the upper and lower Coolant Temperature Sensors
Replaced Coolant Expansion tank and cap.
Replaced Water pump.
Replaced hose from coolant expansion tank to heater core to water pump.
Replaced turbo charger.
Replaced valve cover with PCV valve.
Had a shop test the compression and do a chemical test to rule out the Head gasket. They found no issues.
Beyond frustrated at this point. HELP!
Bad thermostat. I have 5 ive replaced. I drilled couple holes in last one and changed temp sensor on the head. Runs cool and never overheatsThanks for the input everyone. Update on the project. I bought a Fan Assembly from Autozone that they said would fit. It did not. It was 3/4" too wide and would not lock into the retainer slots on the radiator. I have since learned that there is a 1st Design and 2nd design of the radiator. 1st Design has transmission cooler lines on the drive side and uses the Dorman fan assembly part sold by AutoZone and Advance auto. 2nd design has transmission cooler lines on the passenger side. O'Reilly lists both types in their database. I Have a 2nd Design coming from O'Reilly. O'Reilly is new in my area of VA, but they may become my new go to parts house. Neither AutoZone nor Advance could get the 2nd design fan assembly.
@12ecofamily car - I have bled the coolant system at the plug on the upper passenger side of the radiator every time I've had to refill it. The coolant resevoir level remains constant until an overheat occurs and then I loose coolant out of the pressure cap. I'm wondering now about the temp sensors. One of the ones I replaced looked tin when taken out and I just though it was discolored. the new one put in was the gold color. When you refer to those as Engine and Radiator is Engine the upper and radiator the lower? I kept the old tin sensor and I'm wondering if I should put it back in.
Do you have a link for this?You can buy a new resistor pack from Ebay if the fan itself is OK.
This from a google search, there are lots of others on Ebay.Do you have a link for this?
Looks like it plugs in inline. Is that what you did?This from a google search, there are lots of others on Ebay.
AliExpress replacement fan resistor pack
No I haven't done it yet because my fan resistor has not failed.. yet. But no, the resistor pack is meant to be a direct replacement for the original. The problem is the pack is installed from the inside so you can't remove it from the fan housing without pulling the fan.Looks like it plugs in inline. Is that what you did?
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