I did a search but just want a link to some direct instructions on how to do it to my 88 GXL. Please hurry cuz I am going to do it when I get home in like 20 or 30 minutes, thanks.

 

Drain the radiator and the block. Flush the block with a hose until the water is titally clear. I would give it at least 5 -10 minutes to make sure. Then flush the radiator. Back flush it if you can. Then refill the car with distilled water and coolant/antifreeze depending on where you live. Also it is a good time to check/replace the thermostat with a FACTORY OEM ONE and check/replace your radiator cap. Hose check is a default as well.

 

Thanks man. Well problem is I changed my water pump but now it is running around 1/3-1/2 way up the temperature gauge. Found a bad connection on a hose & fixed a leak. Now its still runs hot though. Could it be my thermostat? How exactly, exactly, do I change it? First off, how do I get it out? Where is it? Thanks alot.

 

Easy. You have a series 4 car, so you have 2 screws on your filler neck. That is the neck that your upper radiator hose connects to your engine. Take off the neck by removing the 2 10MM bolts and inspect your thermostat. Take it out, clean it up and put it in a pot of boiling water with a thermometer. When the temps hit 180F the thermostat should open.