I was driving to work the other morning and began losing speed...though the engine would race...appeared to be slipping in and out of gear...it is an automatic transaxle. I stopped at the first gas station checked transmission fluid...none on the dip stick so I purchased a quart and added half of it just to notice a puddle forming below the rear of the transmission almost as fast as I was adding the fluid. I babied it home...stopping every couple miles and adding another quart of fluid.
It appears to be coming out at the bottom of the inspection cover on the back of the transmission...when it and the fluid is warm it appears to leak almost as fast as I can pour it in....
Any comments or thoughts??
The vehicle is a 1995 Ford Aspire, it has 265k miles on it and this transmission was rebuilt about 165k miles ago.
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Why Is My Automatic Transmission Slipping?
If you have an automatic transmission and it "slips" while you are driving it-that is, the car engine revs without the power going to the wheels-the most common cause (though not the only possible cause) is low transmission fluid. If the slipping is caused by low fluid, it will get worse as the transmission gets hotter.
Why Is My Manual Transmission Slipping?
A standard ("manual") transmission uses fluid too, but leaks aren't a common issue; a standard transmission could lose all its fluid and never slip at all, though eventually it would lock up while driving down the road. If you have a standard transmission, and it's slipping-the engine revs but it doesn't transmit power to the wheels-the problem is usually in the clutch.
Further down in the article I discuss how to diagnose this problem.
Sounds Like Low Transmission Fluid to Me
well if the RPM advances fast on engine and the car speed dont
that is tranny slip.
on the other hand if the engine RPM stays low, and speed is low that
is engine power loose.
2 completly different things, why not ask him which it is.
is my engine weak or is the the tranny slipping.
surely you know what slip means. right>?
like bumping in to neutral , under power. or partially
ENGINE RPM state that, going up said hill WOT
and can tell you.
It sounds as if your automatic transmission clutch pack is slipping. You could try changing transmission fluid, but sometimes that may make it worse. You're likely in line for a new transmission. It will continue to get worse until your car will not go at all, or it may only be worse in certain gears, depending on which clutch disk is slipping.
it may be a bad transmission modulator valve located on the side of your transmission,vacum operated. a sudden downshift or forward shift when unexpected is sign of a bad modulator valve or a vacum leak to the transmission.best to shop around for a garage w/references when it comes to transmission work though. check all the vacum lines to your transmision,you need to look on the underneath side of your truck on the side of transmission for a loose or disconnected vacum line on the side of the transmission. when you feel the vacum line,follow it to the top of engine,the vacum line is about 3/8th line,and may be disconnected or losing air. to make this short,when you drive the car,start out in low gear and shift the transmission,manually from 1st to 2nd to 3rd does it do right with no slipping? if it does this right and shifts great manually,the modulator valve on the side of the transmissions bad,or a bad vacum leak in-between.thank you for choosing fixya.com
Almost all 1967 VW beetles came with a 4 speed manual transmission. A few had a "semi-automatic" transmission which was basically a VW manual transmission with an electrically actuated clutch and a torque converter. For the semi-auto, there was no clutch pedal. Instead there was an electrical connector at the bottom of the stick shift. When the driver touched the shift and started to move it to shift gears, the contact would be made and the clutch engaged. This would confuse people if they were used to driving with their hand on the stick shift.
1. If the engine is racing when you go up the hill, then the clutch may be slipping. If you have the semi-auto, then the torque converter may be bad.
2. If the engine is not racing and you're just losing power, then there may not be enough gas getting to the engine. Check the fuel pump output as another answer suggests. The carb's float and needle valve may not be opening all the way, thereby not allowing enough fuel into the carb. Or, you may have a partially blocked main jet in the carb which is not letting enough fuel to flow into the engine.
It sounds like transmission. When the transmission begins to be sluggish. You can push the gas and the rpm will rise, but the car will not go anywhere or gain speed. Check the transmission fluid level to make sure it is at the appropriate level. If it is low, fill to proper level. This should make it go into gear better.
Car picks up speed if you accelerate slowly, but the engine races, with minimal speed increase of the vehicle, when the throttle pedal is pushed harder?
I'm not aware of the typical layout of the Saab, so while these things below are what I would suggest you look at... Not all will apply.
Note that if the clutch plate is worn or otherwise slipping, the more you race the engine, the sooner will you burn off any remaining clutch life. Take things easy 'till you have a solution.....
On any vehicle, this is a classic sign of a worn, damaged, or out of adjustment clutch.
Possibly oil contamination from a leaking crankshaft rear oil seal. It causes a glaze on the linings of the driven plate and loses friction.
The clutch pedal is not returning to it's normal rest position when released. Check for objects trapped between the pedal and the vehicle surfaces.
The cable (if used)may be binding, thus the clutch doesn't fully return.
It may be out of adjustment. Check for adjusting points at the cable ends. If no slack exists in the cable, it appears as though the clutch is worn.
The clutch may be self adjusting. It's possible for self adjusters to seize.
The hydraulic system (if used),has sticking cylinders. You may be able to clean and reuse the cylinders....