I did what you recomended the fluid level is fine then drove for 6 miles and again on take off it was like stuck in low gear so i accelerated to40 miles per hour and shifted to neutral to get home then for some strange reason it seemed ok. Itook it out in the morning around the block and all seems fine untill i drive for about 7 miles and it starts again im at my wits end
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Re: transmission not shifting correctly
It could be several things like Torque convertor,faulty vacuum control etc.Make sure the vacuum hoses ,including the engine are in good condition as an engine vacuum leak will affect the auto as it needs a good and consistant supply of it,this supply of vacuum comes from the engine manifold and runs to the trans.Must be plugged in and in good condition.Make sure you have a good vacuum by unplugging with the engine running and see if it sticks to your finger like a tiny vacuum cleaner.This is a cheap and hassle free check to eliminate a possibility.Oh yeah,if vacuum no good ,rectify and it may help you out
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Jorge, as richie46 recommended check trans, fluid level. At higher mileages,150,000 the automatic transmission may not shift correctly. This can be caused by the throttle position sensor out of adjustment or a shift solenoid needing to be replaced. Typically the transmission does not need to be completely overhauled. "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
As easy as it sounds, if you haven't done it already, just check your transmission fluid level. A low level will cause hard shifts, and sometimes some slippage in the transmission. The difference in the 2 trips could be just how hot the transmission fluid gets during the type of driving you do.
If the "check engine" light is coming on, there is a code, even though the light goes off, the code should be stored. If it stays in 1st gear I'm guessing you may have a stuck shift solenoid. Have you had the trany fluid changed lately, is it full of fluid? Check the fluid with vehicle in "park" on level ground, with the engine idling, it's best to do this at operating temperature. The manufacturers usually recomend changing the fluid and filter every 30,000 miles. It could be something else too the transmission shifting is controled by the computer. The computer gathers information from various sensors on the vehicle and tells the transmission when to shift. I guess I would get it to a shop and have the codes read to find out what is going on before you have major trany problems. It could be the vehicle speed sensor, throttle position sensor, mass air flow sensor, coolant sensor, etc. Good luck.
Change and flush your Transmission fluid. Sounds like your governor is sticking! I think battery would come on if you overcharge battery too, that will definitely detroy your battery, in that case regulator will be bad. Rev your engine and see if cahrge to battery is > 14 Volts DC.....Sorry I dont own Domestic JUNK anymore, so I dont know if your alternator has an internal or still exteranl regulator. 1990, probably internal... I will reconsider domestic once they have improved quality,, they've been saying they have for years, but it's all BS! They still ****... hope I helped out.