Vibration under load....

[Cincy_Machine]

I have a 97 LGT. I just had a replacement transmission, new axles and new wheel bearing put in all due to torque bind that fried my transmission. All fluids are at the correct level.
I feel a vibration under load while in gear at idle say at a stop light. The vibration in not present in park or neutral. I also do not fell any vibration while driving. This vibration was not present before the transmission replacement What is cause this vibration?

Aaron
Cincinnati

[555BCTurbo]

Check your engine and tranny mounts.

[Cincy_Machine]

all good. Now someone said it was the new axels because they are aftermarket and not OEM. I don't now haw that could be.

[ericem]

It's all possible.

[Cincy_Machine]

Ok then, what would cause hard shifting from 1st to 2nd under light loads or acceleration? I fine under hard acceration.

[ericem]

Transmission fluid maybe needs to be changed? Possibly need to adjust your Throttle position sensor. I did that and shifts were pretty much perfect. For my 93 legacy I followed this. Not sure if its the same with your 97.

http://www.main.experiencetherave.com:8 ... sting3.jpg

Very simple I just connect the top 2 pins on the connector to my meter on ohms and adjusted accordingly. Has to buy the feeler guage though was only like $5 most auto parts stores sell them.

[Legacy777]

The newer cars utilize a 3-pin TPS, that sets the idle based upon startup conditions. So that procedure won't work for the newer cars.

[Manarius]

Ok then, what would cause hard shifting from 1st to 2nd under light loads or acceleration? I fine under hard acceration.

How old the transmission? I know my Legacy transmission would clunk a bit during light shifts because it was just old. My SVX transmission does the same thing. I did find though that a grounding kit did stiffen up the shifts a little bit - but nothing major.