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What is your question?
3 days ago while driving, my coolant level spiked to 250+ degrees randomly. I pulled over and looked at everything and my reservoir was empty. I filled my reservoir however nothing changed with the temperature. I brought it to a mechanic and initially it wouldn’t keep pressure and they believed a hose was broken. They bled the entire system, flushed it, and ran a pressure test and it was fine. Nothing was fixed. The jeep was then driven 200+ miles without any issue. Today, again, the temperature randomly spiked to 250. Letting it sit for about 5 minutes allowed it to regulate. Then for about 10 miles it was changing from 211-245. I’m assuming the thermostat is sticking. Do you agree?
How long has your 2018 Jeep Wrangler had this problem?
A few days
1 Reply
Hi - Dave here, contributing to RepairPal and providing expert advice since 2010. What is your cooling fan doing? I do not think your thermostat could be so intermittent, but I suppose it's possible. I suspect more a concern with your cooling fans. It'll take some hands on testing; a thermostat can be verified with a heat gun pretty easily and fans can be verified easily also. If it's neither, you could have an internal engine issue. https://repairpal.com/auto-repair-near-me Click the link to find some shops near you who can help out!