overheating at idle after I replace radiator and thermostat
What is your question?
I had a 2004 suburban its got 214000 miles engine that runs well, It works smooth, but it's overheating at idle within 10 min. I replaced the thermostat, water pump, radiator, temp switch and hoses all new ac Delco and the reservoir too and still overheats how can I know if it bad or clogged heater coded cause it will get hot when I turn on the heat after 15 min from a cold start and then goes cold and gauge shoots to 280 and coolant comes out of the drain hose from pressure and tank gets full. how can I tell if its the heater core or head gasket I don't think its head gasket
Hello, doesn't sound like heater core or head gasket for this vehicle and engine.
Sounds like one or both of two things:
1) Have you ensured there are no air pockets in the cooling system following these big cooling system repairs? Air pockets can cause boiling over of the cooling system.
2) Is the cooling fan working properly when the vehicle is sitting still? Air flow is always required - whether you're cruising down then highway or sitting still. The cooling fan will do the work of making sure your engine stays in the right temperature range while idling. Check here.
Use this link to find some shops near you that can help with your concern:
www.repairpal.com/repair-shops
RepairPal Certified shops can diagnose and repair your 2004 Chevrolet Suburban 1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
