Where is this rattling sound coming from when I first start the car up in the morning?

40

Asked by Dec 16, 2015 at 04:44 PM about the 2006 Jeep Liberty Limited

Question type: Maintenance & Repair

When I first start my car in the morning it makes a
rattling sound, but later on in the day when I start it
up it sounds perfectly fine.

10 Answers

47,095

What engine do you have?

47,095

The V6 is overhead cam so I suppose you might be hearing the cam chain rattle until oil pressure comes up.

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Best Answer
40

I do have a v6.. So are you saying its loose?? Do you think it's fixable or do I have just replace it??

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47,095

I am saying that MIGHT be the source of the noise. If it is minor and quits after a couple of seconds then I would not worry about it. If it rattles for a long time then I would look at replacing the chain an/or the chain tensioner. Do you change your oil regularly? If your oil gets really dirty, the oil passage to the tensioner might be partially plugged up.

1 out of 1 people think this is helpful.
47,095

If you live where it gets really cold, do you use a winter weight oil in your car? Thick, cold oil takes longer to build pressure when the engine is first started.

1 out of 1 people think this is helpful.
40

Yea I think that might be the issue.. Thick oil... I use regular 10w penzoil and it didn't have any problem during the summer

2 out of 2 people think this is helpful.
40

At least I know what to check when I get home... Thanks @Full_of_Regrets

1 out of 1 people think this is helpful.
47,095

Your owners manual will give oil recommendations for colder weather. Maybe you should change to a 5W-30.

1 out of 1 people think this is helpful.
148,835

Beginning in 2008 Toyota, Honda, and many manufacturers call for 0W20. So don't be afraid 5W30 is too light. Year round. The chain also has a guide, to keep it in place that needs good lubrication, the chain running along the guide that is several inches long

1 out of 1 people think this is helpful.
148,835

Like so, click for full screen. Just think of the lubrication needed

1 out of 1 people think this is helpful.

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