odd noise/feel

thisdieingdream1 · Post by **thisdieingdream1** » Thu Sep 06, 2012 1:54 pm

Okay guys.
So I replaced the lower torque strut engine mount and the car starts great now. The key thing is good now.

But, recently when I go to slow down quick or put my car into park my engine or trany makes an odd buzzing noise??? What's this? And is it bad? How's it fixed???

thisdieingdream1 · Post by **thisdieingdream1** » Thu Sep 06, 2012 11:45 pm

NickKo · Post by **NickKo** » Fri Sep 07, 2012 6:10 am

thisdieingdream1 wrote: But, recently when I go to slow down quick or put my car into park my engine or trany makes an odd buzzing noise??? What's this? And is it bad? How's it fixed???

I don't know what this is, but it doesn't sound very good.
It sounds like it may be trans-related.

Are there any other 'symptoms' that occur, along with the buzzing noise ?
Any difference in shifting, etc. ? What happens if you put it back into drive ?
And then back into park again ? <-(not with the car moving, of course.)

- Nick

Post by **occasional demons** » Fri Sep 07, 2012 9:11 am

4 speed ATX? Perfectly normal.

The buzzing noise is the PCM using pulse width modulation on the solenoid pack to create a softer engagement/disengagement of the clutch packs when shifting into drive, or coming to a stop. This is a feature they added over the years, but likely before the 41te/40te was used in neons. It is mostly noticeable in Caravans.

IDK if the '02 neons had that feature or not.

thisdieingdream1 · Post by **thisdieingdream1** » Fri Sep 07, 2012 11:09 am

Well, it only buzzes sometimes when I come to a quick stop. After I've stopped it goes away. Id say from about 10mph to 0 is when I hear it.

As for shifting into park...it buzzes when iit shifts hard into park, the hole car jerks a little. But seems fine when shifting back in drive or rev. But if I put the car into neutral and let it drift to a stop when im parking it, it shifts beautifully.

I believe I've told you all that sometimes when I slow down at a stop sign but don't stop completly or a red light that's turned green or better yet rush hour traffic, my car seems to be in 1st gear and when I step on the gas it slamms into the next gear. Makes me hurt when it happens...=(

NickKo · Post by **NickKo** » Sat Sep 08, 2012 12:05 pm

occasional demons wrote:4 speed ATX? Perfectly normal.

The buzzing noise is the PCM using pulse width modulation on the solenoid pack to create a softer engagement/disengagement of the clutch packs when shifting into drive, or coming to a stop. This is a feature they added over the years, but likely before the 41te/40te was used in neons. It is mostly noticeable in Caravans.

Thanks for the info, Bill.
I haven't owned a 4-spd.ATX, so I wasn't aware of this.

- Nick