Mechanics

HEATER

1991 Pontiac Sunbird • 4 cylinder 2WD Automatic • 100,000 miles

Ive got no heat in my 91 sunbird. Ive changed the heater core thinking that it was blocked. One side, 1/2 size is hot the other 5/8 sive is cold. On both cores.
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Robandjulieann@msn.com
January 28, 2011.



The heater hose, when the engine comes up to operating temperature both should be hot to touch if the coolant is passing thru w/o obstruction

Rasmataz
Jan 28, 2011.