93 Ranger Water Thumping
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Joined: Feb 2001
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93 Ranger Water Thumping
When driving at highway speeds I hear a thumping noise. A couple of times I've managed to pull over and pop the hood in time to see where the noise is coming from. It's coming from the return hose from the heater. You can actually see the hose pulse with the thumping noise. My temp gauge swings between cold and about mid way - until I pull over - then she climbs up to about 3/4 of the way to hot. As soon as I pull away the temp drops again. One time, but not always, I noticed the upper rad hose was collapsed. I've got good coolant level and have replaced the thermostat 3 times. Any advise??
Baffled in Alberta
Baffled in Alberta
New User
Joined: Feb 2001
Posts: 3
Likes: 0
93 Ranger Water Thumping
sounds like you have air in the cooling system.
park the truck with the nose way up in the air and let it rest till you can open the radiator, bet you find plenty of room for
more coolant when you do.
park the truck with the nose way up in the air and let it rest till you can open the radiator, bet you find plenty of room for
more coolant when you do.
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