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
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 27, 2017 | Ford Cars & Trucks
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 28, 2010 | 2000 Chevrolet Silverado
Sep 21, 2009 | 1990 Oldsmobile Cutlass Ciera
Apr 07, 2009 | 1990 Ford F150
467 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: