Took a short trip and when I pulled into my driveway I heard a clanging noise and the check engine light was on so I shut the engine it off. I replaced the cap, thermostat, gasket and the radiator, drain the anti-freeze and refill with Peak Asain red/pink 50/50 anti-freeze. I decided since the last time I replace the cap and thermostat was at 126,000 miles. Check the trans and oil and they are good.
#AIR BUBBLES IN RADIATOR OVERFLOW TANK FULL#
Twice after this on short trips, I smell anti-freeze but I did not fine any leaks, had to had about a cup full of coolant then on the third short trip I found coolant on the front of the radiator and a little on the floor. Recently I changed the oil, filter, spark plugs and front brake pads, check all fuel levels. I do not drive my truck a lot, about 50 miles per week average. HI ALL! I found this forum searching for coolant issues.
#AIR BUBBLES IN RADIATOR OVERFLOW TANK FREE#
Hope this helps, good luck and feel free to ask any other questions.
I doubt you have any blockage in your lines since it still cools during normal driving. I've dealt with many cars in the past overheating and have experienced just about every issue. put it back together, get it up to temp again and see if hotspots still exist. Sometimes you can stick a hose in the radiator and blast it in the opposite direction of the flow and pieces can come out unclogging it. You will have some significant temp differences if any of the channels get blocked. To see if you have flow restriction in the radiator, get one of them laser pointer thermostat, have everything closed off and engine idling, shoot at different areas of the radiator. The fins can also have caused blockage in the radiator through some of the channels thus restricting flow. Some fins would still be on there so while driving you have circulation and car can cool down enough, but at idle, the missing fins doesnt allow for good circulation thus causing the coolant to overheat/boil over. Over the years, esp if coolant wasnt maintained/changed, it becomes corrosive and the blades get eaten up/falls off.
If you do, my guess would be you have a bad water pump. If you dont see any bubbles come out, get a new radiator cap, top off coolant and reservoir and put car back level and let it sit to see if you get the overheating/overflow of coolant. Hope that this was the case, top off coolant and reservoir. keep on running the car till you dont see any more bubbles come out, maybe even have someone tap the throttle couple times to make sure no more bubbles. As its idling you may see some bubbles come up out of the hole.
As its idling you should see the coolant move differently when the thermostat opens up (if the flow rate never changed, you might have a stuck thermostat). Start the car, remove the radiator cap and let it come up to temp so that the thermostat valve opens up. This allows for the radiator cap be on the high end air will naturally flow towards the opening. Get the front end lifted, use a jack, roll up jack or even the curb if its tall enough to give you slope. Miles on car now? Before you go buying a new cap, see if you do have bubbles in the system.
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