Can't figure out what is wrong with my 2005 Kia Sedona!

sedonaowner1sedonaowner1 Member Posts: 5
edited January 2015 in Kia
• Whooshing sound coming from under hood, mainly in idle
• Over heated on Christmas Eve….added coolant and it was fine….Didn’t see any leaks
• Kept over heating, so replaced thermostat, seemed to fix problem, noticed oil was low so added oil
• A week later,-Whooshing sound came back, van overheated again, check engine light came on and went off, heat started to go in and out. AutoZone ran engine diagnostics and said it was air valve, cleaned valve and engine light never came back on. Slight squealing sound that is rare
• Checked for sludge in coolant or oil
• Got oil change at Valvoline and had engine Restore added
• Noticed giant coolant leak in back of van, van kept overheating and heat wouldn’t work
• Friend cut pipes to rear heater and bypassed the rear heat by moving a pipe over, heat came back on, whooshing stopped and made it home fine
• Next day, noticed small coolant leak under bypass site
• Drove van to friend’s house and when parked the coolant was bubbling out at bypass site, even making a hissing and popping sound
• Friend said he used an all weather sealant to fix problem
• Drove it home and coolant leaked, hissed and popped at bypass site, …….added coolant
• Drove to work in the morning, heat was going in and out, started to over heat, whooshing sound was back, and oil light flickered on and off. Hissing, popping and leaking at by-pass site when parked again.
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