have any one ever heir that a bad heater core can make ur truck over heat i got a 95 chevy 1500 thats over heating and dont no why i put a new thermalstat in it radiators good hose are good water pumps good

Rowdy,
I've never heard of a heater core causing overheating problems. Have you flushed the radiator? Also, is antifreeze still good?

ya it good it new i just put it in there i get no heat in my truck and it over heats

What's good? Have you checked the heater hoses to see if heat is getting to core? Both hoses should be hot at normal op temp.

there not hot so is the haetercore bad or the water pump its a new water pump like a yr old if that

You may have a blocked core or a water pump not circulating enough. Try flushing the core with low flow water both ways.

ok and i just take the core hoses off and run water in both ins to do that right and and a block core will make my truck over heat

It won't make it overheat but it will cause low heat in the cabin. You may have to flush the radiator for overheating problems. Are you getting heat ok in the cabin?

no i thank i will just buy a new waterpump and a new heatercore and see if that fixs it lol

Thats pretty expensive and laborious and you may not need them, man!

its just 60 dollers for both

but if the water pump was bad would it still let some water go throu it to the engen

Both together or seperately? That heater core is a pain to replace as is the water pump!

but if the water pump was bad would it still let some water go throu it to the engen
thats for both

Sure but it woldn't circulate very well. It may even cause overheating.

i guess ill find out tomorrow lmao i even toulk the top hose off and it spits out some water

Yeah i would hope so! Check with Tom tomorrow! Good luck!

ok thanks

Some engines use the heater core for the bypass system to keep engine uniform temp and can't be bypassed or left plugged up. I don't think the Chev "V" engines do that but not sure for all applications. If so, engine temp would read high and low and never be steady. You can feel hoses and find where the heat is going. With heat on high temp request and lowest fan both hoses to core would be pretty hot. Use common sense touching hoses as they are hot enough to burn you,

T
Tom Greenleaf - MetroWest Boston - USA
http://www.acsource.com/

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