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266 Posts
Hey Guys,
So, I noticed yesterday that my truck was leaking coolant. I rented a pressure tester and sure enough the rad sprung a leak. So, I went to auto zone and picked up a new radiator. Pulled out the old one and installed the new one. Filled it up. Attempted to burp the system and I thought I was all good to go.
Wrong.
She's not cooling at all now. Prior to me replacing the radiator everything worked fine. She didn't get hot. She ran at ~192 all the time. Everything was dandy.
Now, when i start the truck it warms up really quickly. If I leave it in park with the hood open and have the heat on full the temp will sit around ~210. If I turn the heat off it spikes to 225. If I try to drive it with the heat on the temp will rise. I shut her off at 230 because I don't want to hurt anything. The upper hose has pressure and is hot. The lower hose has pressure and is cooler. I have no idea what's going on. I tried burping the system again by parking the truck on an elevation, and with the cap off letting it run. The coolant level doesn't really seem to change. I don't see any bubbles. I tried squeezing the tubes, but coolant surges with no evident air coming out. When I turn the heat off while the truck is running with the cap off of the rad the coolant level rises and spills out of the radiator spout.
**Edit**
1. I've got an UltraGauge so I can tell what temp my coolant is at. I'm not guessing.
2. When the radiator cap is off, no matter what the temp, the coolant doesn't appear to move at all. It doesn't appear to me that there is any circulation. I'm starting to think it's the thermostat stuck closed or partially closed.
Thoughts?
So, I noticed yesterday that my truck was leaking coolant. I rented a pressure tester and sure enough the rad sprung a leak. So, I went to auto zone and picked up a new radiator. Pulled out the old one and installed the new one. Filled it up. Attempted to burp the system and I thought I was all good to go.
Wrong.
She's not cooling at all now. Prior to me replacing the radiator everything worked fine. She didn't get hot. She ran at ~192 all the time. Everything was dandy.
Now, when i start the truck it warms up really quickly. If I leave it in park with the hood open and have the heat on full the temp will sit around ~210. If I turn the heat off it spikes to 225. If I try to drive it with the heat on the temp will rise. I shut her off at 230 because I don't want to hurt anything. The upper hose has pressure and is hot. The lower hose has pressure and is cooler. I have no idea what's going on. I tried burping the system again by parking the truck on an elevation, and with the cap off letting it run. The coolant level doesn't really seem to change. I don't see any bubbles. I tried squeezing the tubes, but coolant surges with no evident air coming out. When I turn the heat off while the truck is running with the cap off of the rad the coolant level rises and spills out of the radiator spout.
**Edit**
1. I've got an UltraGauge so I can tell what temp my coolant is at. I'm not guessing.
2. When the radiator cap is off, no matter what the temp, the coolant doesn't appear to move at all. It doesn't appear to me that there is any circulation. I'm starting to think it's the thermostat stuck closed or partially closed.
Thoughts?