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Search Auto Parts Search Water Flow Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> AC Auto Repair Help Forum Eric of Pa. Novice Oct 7, 2006, 2:16 PM Post #1 of 3 (1499 views) Water Flow Sign In I purchased a used 1995 Surburban and can not get consistant heat from the front or rear heater. After counsulting my mechanic he suggested a system flush and the possablity of and air lock. I flushed the heater cores with a garden hose attached to the heater hose but have the same problem.With the vehicle running and the rad. cap removed I can unhook the return heater hose from the tee and only get a pencil lead thick flow of coolant to run out.My question is, is it plugged heater cores or a week waterpump or air in the lines? Thanks for your help! Tom Greenleaf Ultimate Carjunky / Moderator Oct 7, 2006, 4:50 PM Post #2 of 3 (1497 views) Re: Water Flow Sign In Back again at wild guessing. Try a reverse flush and look as best you can for a lime type crust that you probably won't get out, Bummer but let's hope, T DanD Veteran / Moderator Oct 9, 2006, 4:39 AM Post #3 of 3 (1494 views) Re: Water Flow Sign In I agree with Tom your heater core(s), lines and or control valves to or from are clogged or control valves are stuck in a position not allowing flow. It almost can’t be that the water pump is at fault. Supplying hot water to the passenger compartment for heating is the water pumps secondary job. Its main purpose is to cool the engine; heat for the passenger compartment is just a by product. To confirm this take the hoses that come directly off the engine and join them together. If they become as warm/hot as the other hoses then you have flow. Dan. Canadian "EH"   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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