I HAVE A 1975 DELTA 88 I RECENTLY USED THE ...

  • Tiny
  • tysonmouton
  • 1975 Oldsmobile Delta 88
  • 60,000 miles

I have a 1975 delta 88 I recently used the heaer and it work awsome and now whaen u slide the switch over to hot it doesnt blow hot ive changed the heater control valve I looked at the vacum ball it has little vacume on it I dont know if ots not enough vacum or what or what the prob can be

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Monday, January 7th, 2013 AT 4:43 PM

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  • Tiny
  • hmac300
  • Expert
  • 44,434 posts

Check to see that all yoru vacuum motors work it may have a vacuum leak from engine. Make sure both heater hoses are hot when engine warm.

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Monday, January 7th, 2013 AT 5:55 PM

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