QuestionQUESTION: i already change the radiator and flush the sytem but still overheating and i noticed when i turn the heater on, it blows cool air and sometimes no air.
ANSWER: Hi Ramon,
What is the year and model of vehicle? It sounds to me like you have air trapped in the cooling system so the coolant is not being pumped around the system efficiently. But tell me which year/model/ engine you have so I can tell you how to clear the air out if that is the problem.
Roland
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QUESTION: 1993 dodge intrepid 3.5 engine
AnswerHi Ramon,
That engine has to be refilled with coolant in a manner that allows the air to escape. There could be air trapped in the cooling system from not having it filled properly after the radiator was replaced. Here is the way to get air out:
It would be good to start with only a partially filled system. Open the drain cock of the radiator and collect coolant fluid. It may not begin to outflow very much until you notice also that the thermostat housing has a bleed valve which if you open it will allow the fluid to drain from the radiator more rapidly. Drain about 3 quarts of coolant in a pan for reuse; then close the radiator drain cock.
Put a 4' length of clear plastic hose on the thermostat housing bleed valve nipple and direct the hose over the front of the car to a clean container to catch the coolant as you refill the system (You don't want coolant to get on the drive belts). Then take the cap off the recovery bottle and slowly fill the coolant recovery bottle until fluid starts to flow out of the clear hose. While adding coolant slowly as necessary to keep it running from the 4" hose, gently squeeze on the top radiator hose until all the air is exhausted from the system via the bleed valve hose. The outflow from the hose should have no air showing up. Close the bleed valve and fill the system the rest of the way until it reaches the to the mark on the side of the overflow bottle. Remove the hose from the bleeder valve nipple.
You might be able to get the shop who did the radiator replacement to do this procedure for free, if they didn't do it right the first time.
Then see if that has solved your problem. Use the 'thank/rate' to get back if it hasn't.
Roland
Hi Ramon,
So you concluded the water pump was not working well?
About the timing belt installation: you would want to remove the belt tensioner and compress its piston in a vice and then insert a pin to lock it place using hex key or similar temporary locking pin that you can later pull out.
There is a mark on the crankshaft sprocket that you align with the mark on the oil pump cover (TDC, cyl 1) Then align both cam sprocket pulley marks midway in between the two marks on each of the top of the back covers.
Begin to install the belt at the cranshaft and work counterclockwise from there: first go around the right cam sprocket and maintain tension on the belt as you go around the left sprocket and continue tensioning it until you go around the tensioner pulley. Then reinstall the tensioner (torque screws to 20 foot-pounds). Then release the pin on the tensioner lock pin. Then check the timing marks, and then rotate the engine crankshaft two complete turns and check the marks again.
I can xerox and postal mail you a page that shows the procedure. Or you may find one at an Autozone parts store or on their website (www.autozone.com)
Roland
PS Thanks for the kind evaluation and nomination.
