Question about 1990 Pontiac 6000
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Posted on Jan 02, 2017
When u put the heater core back either you mixed up the A/c controls with the heater control, or the gate that allows air across you heat ex. is not opening.
Feel the temperature of the water going in and out of the heat ex. (open the hood and feel down by the firewall where the pipes go thru)
If it isnt hot going in there is a valve problem not allowing water to circulate.
If both are hot, then the blower gate isnt opening or the A/c control is confused with the heater control. ( a bit unlikely)
Hope that helps
Posted on Jan 13, 2009
ram a sharp chissel or pointed head centre punch through the core and prise it out .,than tap the new one in place ,,,there u go bobs ure uncle
Posted on Jan 29, 2009
i do believe you have to take the passengers side dash apart behind the glove compartment. go to autozone and get a manual or go to the library and check the chiltons manual. this is not an easy job. how bad is the leak? if its not bad these heater cores are made of all aluminum. i would buy a bottle of that radiator additive and see if that takes care of the problem first. it only cost about 5 bucks a bottle and it may permanantly fix your problem.
Posted on Aug 13, 2009
This is a fairly easy fix. Disconnect the heater hoses under the hood. Go to passenger side under the dash remove the lower panel from the dash to access the heater box. Unplug any and all connections on the lower half of the heater box and remove the lower half of the box should be about six screws you should see the heater core and the evaporator core. Heater core skinnier of the two should have one or two straps holding it in remove the straps and remove the core and replace.
Posted on Oct 05, 2009
SOURCE: had to replace water pump
You may have loosened or lost some material into the system while changing the pump and caused a blockage in the heater core. There could be a little coolant going through to warm up but not enough to continue supplying heat once the initial heat is drawn down.
Ideally a back flush through the heater core may take care of it. You should be able to find a kit to help with in an auto parts store.
Open the hood and look on the firewall of the car. There should be 2 rubber hoses going into the firewall and into the car. They will likely have spring clamps just like on the radiator hose. Remove both lines. Then get a hose and put it in one line and run the water until it comes out clear. Then do the same thing with the other side. Do this a couple of times. Then reconnect the 2 hoses ahd check the level of the radiator. Then start the car with the radiator cap off and wait a while for the thermostat to open and have the heater on so it will cycle through the whole system. Then top off as needed.
Posted on Jun 14, 2011
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