Redcanyon77
Well-Known Member
- First Name
- David
- Joined
- Jul 8, 2023
- Threads
- 3
- Messages
- 109
- Reaction score
- 148
- Location
- Yorktown, VA
- Vehicle(s)
- 2023 JL Rubicon FarOut Edition, diesel
- Thread starter
- #1
After a 45 minute drive this morning prior to shutting the engine off I noticed an engine noise that sounds like it could be maybe something purging or a whine of some sort. It happens about every 15-20 seconds. It did it again on the very next drive. I can hear it while driving but obviously it’s a little harder to hear and doesn’t seem to change with RPMs. It a 2023 with about 20k miles. HPFP done about 1500 miles ago. No other lights or codes. It has a stage 2 delete so I don’t think it would be anything emissions related and a dealer visit will take me about 4-5 hrs work.
Update: This morning when I started it there wasn’t any noise. Once it was up to temp shortly before getting home I could hear it again. This time it was a little louder and was not consistent. It would last for about 5-10 seconds or so. In the driveway it was pretty consistent every 15-20 seconds again. I narrowed the sound down to top of the coolant neck/hose on the front of the engine. I think this is where the thermostat is. I removed the coolant reservoir cap and a considerable amount of pressure released. I let the cap off for about 5 minutes and no more sounds. I put it back on and it still didn’t make any sounds but I didn’t drive it anywhere yet, Just idling in the driveway. I see the cap says 21 psi on it so either I’ve got a faulty coolant reservoir cap or possibly the thermostat going out or maybe some air trapped but I would assume that would purge itself out. I haven’t added or messed with the coolant at all. The coolant looks normal and is at the correct level. I’ll update later as I troubleshoot some more but kinda relieved that it appears to be something simple at this point. I will definitely tell you though once I slowed done enough to hear it over the wind noise it really sounded like a bearing or something was starting to go.
Update: This morning when I started it there wasn’t any noise. Once it was up to temp shortly before getting home I could hear it again. This time it was a little louder and was not consistent. It would last for about 5-10 seconds or so. In the driveway it was pretty consistent every 15-20 seconds again. I narrowed the sound down to top of the coolant neck/hose on the front of the engine. I think this is where the thermostat is. I removed the coolant reservoir cap and a considerable amount of pressure released. I let the cap off for about 5 minutes and no more sounds. I put it back on and it still didn’t make any sounds but I didn’t drive it anywhere yet, Just idling in the driveway. I see the cap says 21 psi on it so either I’ve got a faulty coolant reservoir cap or possibly the thermostat going out or maybe some air trapped but I would assume that would purge itself out. I haven’t added or messed with the coolant at all. The coolant looks normal and is at the correct level. I’ll update later as I troubleshoot some more but kinda relieved that it appears to be something simple at this point. I will definitely tell you though once I slowed done enough to hear it over the wind noise it really sounded like a bearing or something was starting to go.
Sponsored
Last edited:
