Gearbox rattle in Park or Neutral

[guyglo]

I have quite a loud rattle coming from my autobox when I blip the throttle in park or neutral. Once in gear it is fine. Does anyone have an idea what it could be?

Thanks for any suggestions.

Guy Glover

 

[Yoda]

Guy,

My first thought would be to check the linkage for loose bolts If you haven't checked the mounting hardware yet, I would start there, then we have a foundation to build from

 

[guyglo]

Thanks for the reply. I have had a look under the car and can not see any obvious external sources. The sound appears to coming from inside.
I at first thought it was a heat shield rattling on the exhaust or something similar but this proved not to be the case. It is a very loud rattle which goes as soon as a gear is selected.

 

[Yoda]

Guy,

Have a look under the console the seats are not that hard to take out, esp. if they are mechanical and not electric.. then the side panels come off with 3 screws per panel..

Bud

 

[guyglo]

Thanks Bud.

I have taken the side panels off to have a look but nothing from there. With the engine running in park or neutral and lying under the car it appears to be from the area where the starter is but I can not feel or detect any vibration from the starter. The starter works and sounds fine.
Could anything in the converter sound like this when not in gear?

Guy

 

[phxraptor]

I had rattles like that on mine,turned out to be welds broken on the exhaust heat shields.Tacked them and noise gone.

 

[Robin7TFour]

if the noise is inside the bell-housing area. remove the cover and check all the bolts on the torque converter that attach to the flywheel.

just a thought

ROBIN

 

[guyglo]

Thank you for the suggestions. I have just returned from a business trip and will check further as soon as I can.

Guy

 

[GerryLP]

The areas that Phxraptor and Robin suggested are very good starts. I had both situations happen to me.