Ok I have a very odd problem. This happends everyday. Its a automatic transmission.
Basically, when I start my 90 firebird 3.1L, everything is great. When I go and drive around weather its in town or around town, it doesnt switch gears until around 4000 RPM which is waaay too late cause its eating up gas likes its candy. It also****** hard ****** whole car forward) when it switches in the high rpm (this is first gear going to second gear). It does this for all gears. Usualy the longer im in a high rpm (say I steady it at 3000 RPM for a good minute of driving in say 3rd or 4th gear) then it finally changes after a while. It will also change a lot sooner if I hit the gas and floor it to 4000rpm then it finally changes.
That all happens everyday while on short drives or drives where I stop alot (stop lights/signs) However if I go on a long drive say to the next town over or anything like 10 minutes of driving, then it switches too soon! So for example lets say im driving it in 4th or 5th gear going 65 or 70mph for 5 minutes straight. When I get to the stop light and I stop and wait for green light, I go and it switches at say 2000 RPM to 2500 RPM for all the gears! Now im hitting the gas and it speeds up a little but sounds like im drowning the engine with gas since its pedal to the medal and its not kicking down a gear to say pass somebody up or just go faster. I have to manually shift it down a gear to do this.
The early shifting I would prefer since I can easily manually goto gear 1-3 and then into overdrive cause at least this way I can save gas when im in town which is where im at the majority of every freak-in day!
So is it a bad transmission? A bad sensor somewhere? I have been driving it like this for a year now due to financial difficulties
Thursday, November 3rd, 2011 AT 2:56 AM