3.2 over heating need some advise
New to the forum, I have an issue with a 2001 3.2 over heating. Pulled it into the garage to replace the booster, as soon as it came in a hissing sound started to occur. Open the hood to see the coolant reservoir cracked. No big deal I'll just replace it, its got to come out anyways. Finish up the job a day later and attempting to bleed the coolant system is proving to be a pain or there is another issue causing it to over heat. Was wondering if any one had some advice on an easy way to ensure there is no air stopping the coolant flow. Upper rad hose is hot, lower is cool, so its either air, stuck therm, clogged rad, or bad pump? I would assume air because there was no issues with it over heating until I've touched it (other than cracked res) Any feedback or insight would be great, thanks!