Question about 1990 Ford F150
Run engine from cool, with rad cap off & heater on heat (not AC) and watch for circulation through rad when engine reaches normal operating temperature. Rev engine slightly from time to time for a couple of seconds, to increase flow & help bleed air out of system. Let it run for a while, and watch for increased flow in rad 2 or 3 times. Probably see air bubbles at same time.Hot coolant from engine comes in top, and back out bottom to engine after cooling in rad. The increased flow in rad ,indicates thermostat is opening & circulating cooler liquid back into engine. After 2 or 3 times put cap back on & fill return bottle only to line specified as warm/hot engine level.
Posted on Feb 20, 2009
Tips for a great answer:
Mar 18, 2015 | 1999 Ford Taurus
Oct 11, 2011 | 1992 Ford Ranger
Aug 06, 2011 | 1990 Toyota Pickup
Jan 26, 2011 | 1989 Mercury Colony Park
Jan 26, 2011 | 2000 Chrysler Sebring
Jan 04, 2011 | Ford F-150 Cars & Trucks
Jan 28, 2010 | 2000 Chevrolet Silverado
Sep 21, 2009 | 1990 Oldsmobile Cutlass Ciera
Apr 07, 2009 | 1990 Ford F150
462 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: