I have the above and after watching your superb videos, I replaced the thermostat, then the coolant temp sensor, got new radiator caps and now I'm stuck. I have replaced the radiator before and it just started running hot this week. Two questions: could burping the system fix it? And should I try another radiator cap? The reservoir has an open discharge piece, so I can't imagine that that would be pressurized, so not sure how that works. Should I pressure test the system first? I've got a mechanic wanting to change the water pump and thermostat, just to make sure we have it fixed, but want to eliminate all easy stuff first. Thank you for any help.
Start with pressure testing the system. Also, make sure that the radiator is working fine by measuring the temperature for different spots on the radiator.
Thank you!
You're welcome. Keep us posted.
It seems to me it was the burping that got it working, and possibly could have from the beginning. Its still running warm but not to the danger line, so do I need to worry about that? It used to always run at the bottom third of the temp gauge, now it runs there for 10 min, then goes the half way point for another 10 min, then goes to 2/3 (still below danger line) for the rest of the day.
It is not dangerous for short time but it is not good for your engine in a long run. You still got some air inside. Try to get it out.
Make sure the system has been properly burped of air as this can cause the symptoms you mentioned. The last resort is the radiator and the water pump.
Thank you. I'm going to run it at idle with the cap off for 20 min or so, then let it cool and top off, and repeat tomorrow AM. Anything I'm missing as far as burping it goes? I bought a new radiator cap and a pressure kit and after I burp it once was going to try to drive it to see if its getting better.
First, to properly burp the system, you have to raise the front of the car either on jack stands or park facing uphill. Next, turn on the heater temp selector to High. Start the car and with the cap off look for air bubbles and add coolant as necessary. Shut off the car and fill the overflow tank to spec.
Air in the system would definitely cause your concern and just make sure your bleeding the system from the coolant tank and not the radiator as well as make sure the pressure cap is on the coolant tank and not the radiator it’s a common mistake that can cause problems
