"Rattling" from engine compartment

[Blitzkrieg73]

I just started having the same issue. the only thing ive done is replace my K&N air filter. it only happens when im coasting (off the accerator) slow or down a small hill. i have rechecked all the clamps on the air filter, intake tubing and throttle body. all tight. i have read some where people mention give it 100-200 miles for the ECU to recalibrate the air flow (currently in process of doing this). also heard of disconnecting the battery and reconnecting and driving around for the same. it is not affecting anything, just an annoying, low rattling/whizzing noise. i'm stumped for now. will wait and see how it goes.

Sorry I haven't update this, but we think we got it solved. That is to say that we made a repair and the sound stopped happening - doesn't mean there still aren't underlying issues like lifters, etc.

Took it to shop, they couldn't replicate the sound. Drove with them, still couldn't replicate the sound. Take it home, sound is right back of course.

What the shop did do is diagnose low oil and failing oil pressure sending unit. The dash oil pressure showed on the low end but internet said nothing to be overly concerned with. Wanted $800 to change the oil and swap the $20 part, so you know what the answer was.

Long story long, I changed the oil pressure sensor and it seems to have remedied the issue. No idea why or how, but could have been starving the lifters or someone mentioned the cam phase sensor.

 

[solardave2002]

So did you change the oil pressure sending unit or sensor? I’ll check my oil level also anyways. Thanks!!

 

[Blitzkrieg73]

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