YACT: car makes a grumbling noise when accelerating sometimes and jerks into Drive and Reverse from fresh start.

[gotsmack]

My car (an automatic 88 volvo 760 turbo) makes a grumbling noise when I lightly put my foot on the gas at about 15 mph. It only makes this noise if I lightly press the gas and stops if I go faster.

It also makes a dull snapping noise and jerks into drive and reverse when I start it in the morning, it only happens if the car is started after 12 hours of sitting there.

any ideas? Thanks in advance.

 

[Monel Funkawitz]

That is the torque converter doing that funky stuff, ya need a tranny overhaul.

Drive it till it blows up, then off it or drop a new tranny in it.

 

[toph99]

check your idle air control valve and transmission fluid level

 

[Brutuskend]

sounds like a busted motor mount to me.

Have you been revvvving it up and throwing it into drive??

Edit.....maybe not. I didn't read the whole discription.

 

[ThisIsMatt]

It also makes a dull snapping noise and jerks into drive and reverse when I start it in the morning, it only happens if the car is started after 12 hours of sitting there.

I'd guess this is almost normal...your automatic choke/etc is probably on, causing the car to idle high initially while the engine warms up. High idle = torque converter engages more abruptly.

 

[gotsmack]

it just started doing that though.

What about the grumbling noise when I accelerate lightly?

 

[ThisIsMatt]

Originally posted by: gotsmack
it just started doing that though.

What about the grumbling noise when I accelerate lightly?

Def. check the transmission fluid. Do you know when it was last serviced (how many miles ago)?

 

[theNEOone]

check your transmission fluid




=|

 

[gotsmack]

I had the trans fluid replaced about 1 year ago I have driven < 3K since then. I'll give it a check tomorrow to see if it is clean and if the levels are ok.