You will need a scan tool to see what coolant temperature the computer is seeing. The engine holds about 2 gals of the 50-50 mix. I would plan on replacing the reservoir cap regardless, so when the engine coolant level is correct and the level does not drop after the cool-down period, install the new cap and retest to see if it still overheats.Īny repairs / work done to the engine recently? Does the temp gage start cold and climb to normal or does it start at normal operating temp when you first start the engine? Shut the engine off and let it cool for 20-30 mins and repeat the process if necessary. The MS 90032 is the concentrate form and they are interchangeable.
Dexcool coolant booling temp manual#
Owners manual says to use MS 12106 and found out that part number 68163849AB (MS 12106) is the Pre-diluted form of MS 90032 part number 68163848AB. start the engine and let it run for 5-10 mins with the recovery reservoir cap OFF, or less if it starts to boil over. There are those who claim that MS-12106 is identical to DEX-Cool, but I haven’t found conclusive proof of that.
( Be sure to use Dex-Cool coolant and drinkable or distilled water to a 50-50 solution.) Check it with the engine cold not running, fill it within 2-3 inches of the top of the recovery reservoir. Seventh thing is any combination of the above.Ĭheck the coolant level FIRST. Sixth thing is very low coolant level in the engine ( the coolant sensor HAS to be submersed in coolant, it will NOT give an accurate temp reading if it is surrounded by air ). Fourth thing is a stuck or only partially opened thermostat.
Third thing is a plugged or restricted bleed line to the coolant recovery reservoir. Second thing is a defective pressure cap. First thing that comes to mind is a defective coolant temperature sensor.
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