GRN96WS6 Posted August 2, 2002 Report Share Posted August 2, 2002 Well I recharged the A/C in my Sentra and it worked fine for a week or so and then started acting up. What is does is it works fine and blows cool air for about 20 mins then the air gets warmer though still cool and the engine temp begins to rise. I posted this on a Sentra specific board and the only advice I got was "thermal runaway" I have never heard of that term before, anyone know what it is? Anyway thanks for the help. BTW I have checked the coolant and it is fine . Quote Link to comment Share on other sites More sharing options...
20G TSi Posted August 2, 2002 Report Share Posted August 2, 2002 Have you pressure tested it? How well do you trust your pressure gage (the one used to fill)? Quote Link to comment Share on other sites More sharing options...
Guest 1bad66duece Posted August 3, 2002 Report Share Posted August 3, 2002 does your cooling fan turn on whle your air is on?try runnung a water hose on your condinser when the air turns warm,sounds like the condenser is not propery getting cooled!!!if your fan is working check to make sure air can freely pass through the condenser (make sure its not clogged with dead bugs or leaves) just a suggestion. Quote Link to comment Share on other sites More sharing options...
20G TSi Posted August 3, 2002 Report Share Posted August 3, 2002 Originally posted by 9sec509: does your cooling fan turn on whle your air is on?try runnung a water hose on your condinser when the air turns warm,sounds like the condenser is not propery getting cooled!!!if your fan is working check to make sure air can freely pass through the condenser (make sure its not clogged with dead bugs or leaves) just a suggestion.thats a very logical explaination. makes sense to me. Quote Link to comment Share on other sites More sharing options...
GRN96WS6 Posted August 3, 2002 Author Report Share Posted August 3, 2002 Yes the secondary fan kicks on. And the condensor is free of bugs and debris. I'm not sure what else to check other than pressure test the system. If it is something major it will stay broken until I get another job. Quote Link to comment Share on other sites More sharing options...
stolen 5.0 Posted August 4, 2002 Report Share Posted August 4, 2002 i had my uncle recharge the A/C in my stang a few weeks back. i guess there is a valve on the coolant line that runs through heater. when u turn your temp to cold, it's supposed to stop the coolant from flowing through the heater, my valve is broke so it does cool as much as it should. also. most car a/c system's will only cool 20 degrees cooler than the outside temp. Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted August 4, 2002 Report Share Posted August 4, 2002 it actually sounds like a thermostat or coolant problem, not the ac freon Quote Link to comment Share on other sites More sharing options...
GRN96WS6 Posted August 4, 2002 Author Report Share Posted August 4, 2002 I would think that if the thermostat was bad the engine would heat up without the A/C also. Quote Link to comment Share on other sites More sharing options...
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