It only happens rarely.. but sometimes when stepping down the gas it would suddenly max out the speed gauge, and you hear the very loud engine noise as if i stepped down the gas all the way, but what is weird is the fact that car doesn't accelerate much if any at all!
it happened twice during the past month, no pattern in when this happens other than stepping on the gas like you normally would..
Open to suggestion on what is wrong.
With your added information, this sounds like there is a definite problem with the transmission. Your description leads me to believe it probably has something to do with the clutches being worn out in conjunction with low line pressures (or some such). I would definitely believe the transmission is due for an overhaul. If you pull the dipstick, does the transmission fluid smell burnt and/or appear dark brown in color? If so, this is another tell tale sign. The soft parts in an automatic transmission will only last so long before they start exhibiting these types of problems. I would highly doubt there is anything wrong with the engine (at this point).
Your clutch slips probably, soon or later you won´t be able to accelerate anymore, just to be sure I understood it like that, you step on gas pedal, rpm´s get high, no acceleration, then when you step out a bit it catches and car starts to accelerate again, right?
