2000 Ford F 250 Model 7 3 Power Stroke Hotter Engine Gets Starts Blow Hot Air

2000 FORD F-250
274,000 MILES
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I have a 2000 model 7.3 power stroke and the hotter my engine gets it starts to blow hot air like the heater is on when I'm. running my a/c. Any reason you can think of why it does that?
Mar 22, 2013 at 11:00 AM
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HMAC300
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check for a vacuum leak first then check items 1-9-11 inpic they control doors that control heat/cool they may be loosing vacuum and not staying closed open etc.
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Mar 23, 2013 at 8:04 AM
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