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581 Posts
Hey everyone,
Hoping to get some input on this issue. When I start my Jeep after it has sat for a while, it will make sort of a knocking/rattling noise after about 30 seconds of running (wish I could upload the audio/video of it somehow). This continues until I drive about 1 mile, then it goes completely away. It does it every time I do a cold start. It almost sounds like its coming from the fan area but it's hard to tell. I haven't noticed any loss in performance and the noise does not get louder when I'm driving.
When it was in the shop today (for something else), I mentioned this issue and they said they noticed it a little too but did not diagnose it. When I mentioned the fan, they didn't think that was the case and said it is "probably" some slight internal damage to the engine that has happened over time. They said that it's not ready for a rebuild and to keep driving it and as long as I change the oil regularly it could still last a very long time.
Would an engine issue go completely away after driving it for a mile? Could it be the fan (or something similar)? Are they blowing smoke up my a**? Obviously I need to have it diagnosed further, but any ideas? it's been doing this since I bought the Jeep 4 months ago.
Thanks in advance everyone! Appreciate it.
Hoping to get some input on this issue. When I start my Jeep after it has sat for a while, it will make sort of a knocking/rattling noise after about 30 seconds of running (wish I could upload the audio/video of it somehow). This continues until I drive about 1 mile, then it goes completely away. It does it every time I do a cold start. It almost sounds like its coming from the fan area but it's hard to tell. I haven't noticed any loss in performance and the noise does not get louder when I'm driving.
When it was in the shop today (for something else), I mentioned this issue and they said they noticed it a little too but did not diagnose it. When I mentioned the fan, they didn't think that was the case and said it is "probably" some slight internal damage to the engine that has happened over time. They said that it's not ready for a rebuild and to keep driving it and as long as I change the oil regularly it could still last a very long time.
Would an engine issue go completely away after driving it for a mile? Could it be the fan (or something similar)? Are they blowing smoke up my a**? Obviously I need to have it diagnosed further, but any ideas? it's been doing this since I bought the Jeep 4 months ago.
Thanks in advance everyone! Appreciate it.