Unknown noise in engine compartment, during acceleration...

[BT1024]

NOTE: Even though this is a "Problem/assistance" post, I'm posting this in the V6 section, because the main issue is related to the 3.5L V6 engine.

I was wondering if any ther V6 3.5L owners have noticed a subtle "vacuum" air sucking noise and then a "click"/or "clack" when accelerating ?

- About 3 weeks ago, after taking my car to the Dealer for my "freebie" oil change, I noticed that while the car is moving, if I tap the gas pedal, or even when I depress it enough, but not enough for a downshift, I hear a "vacuum" air sucking ("whoosh") and then a "click"/ or "clack" noise.
- I never heard this noise before - and from day one, I've paid close attention to how the car and engine sound while I am driving (there are times when I don't turn the stereo on, so I hear everything).


- I've got a couple of other odd things that I have noticed recently - I may post more on them later - 1) It seems like my compressor is always running, (2) I hear the "tick, tick, tick..." (lifter) noise from the engine - much like the "hemi tick" that someone else posted, (3) At times my right rear wheel seems to be making a rubbing noise - like the brake is rubbing. NOTE: because of the issue where "we" all seem to hit the parking brake when getting in the car, I make a point to make sure the parking brake is not engaged, (every time)before I drive away.

Thanks for your feedback, in advance -

Brian T.

[spoonerock]

I haven't heard anything like that in mine? Since you say it is very recent, perhaps you got a bad tank of gas, or perhaps some water moisture has gotten in there via condensation??

This happened to me with another car I owned years ago, and a mechanic friend of mine advised me to put a bottle of "HEAT" in the tank. I don't know if that did the trick or not, the the acceleration tick, tick, tick went away almost immediately!

Hope this helps, or maybe others will chime in with thoughts! :happy:

[BT1024]

Spoonerock,
Thank you for the note - I have actually been through 3 tanks of gas since noticing the "vacuum sucking noise and click/clack" and the other "tick, tick..." noise.
For "vacuum sucking noise + click/clack", I think that I have a bad vacuum switch or something in the engine compartment.

The "tick, tick, tick..." noise is seperate from the other noise - Just to confirm, you don't hear the "tick, tick, tick..." noise at all ?

- One of the things that I am wondering, for the "tick, tick..." noise, is maybe the dealer put the wrong oil in when they did the change. I am suspicious of that, because when they did the oil change, I drove home from the dealer and then checked the oil level and it was one quart low. I took it back to the Dealer the next day and they added the extra quart - But, I think the mechanic was following the specs for some other engine - one that used a different oil weight and a different amount of oil.

Well, the car still runs and I'm not getting any warning lights - But, I may tell the service guys about these things, when I take it in for the exhaust upgrade.

Thank you,
Brian T.

[spoonerock]

I know this may sound stupid, but sometimes you might get a tick, tick sound if you tires are underinflated, or if a wheel balance weight has fallen off?

Just grasping at straws here...........

[BT1024]

Actually, the "tick, tick, tick..." happens when it is idling as well.

I used to get a "tick, tick, tick..." noise while driving, from the hub caps on my '98 Plymouth Breeze (that I traded in). But, the "bolt" on wheel covers on my Chargers Steel wheels, have not made any noises yet.



Brian T.