Sounds like a transmission slipping problem. Check level and condition of the fluid if it continues get it pressure tested.
Also check and test the throttle position sensor
March, 17, 2009 AT 6:53 AM
I forgot to mention that when it's cold outside, it runs good. Do you think it could be the O2 sensor?
March, 17, 2009 AT 2:01 PM
Could be it came up with P0131
June, 12, 2010 AT 7:27 AM
Ok, I know it's been awhile. I changed the transmission and it ran ok for a month or so. Now, it is losing power again. Exactly the same way. New throttle position sensor, MAf sensor. Any ideas?
April, 9, 2013 AT 11:29 PM
It was transmission fault it has nothing do to engine. I had same problem it was shift solienod problem when I put in 1 gear got power when I shift to 2 at 30 mph took long time to chaange in 2 gear so I has change all solienod inside pan of transmissin finilly got shift correct at start. Got horsepower back normal. Pain in ass !