1994 explorer transmission stopped pulling
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1994 explorer transmission stopped pulling
1994 explorer w/automatic tranmission, the automatic transmission when in the park or neutral position will idle normal. When trying to engaging reverse or drive the vehicle quits (the engine quits running). Pulled the transmission pan off and no transmission deposits, transmission fluid a bit discolored.
Any idea what the problem could be?
Any idea what the problem could be?
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From: UT
Sounds to me like the torque converter clutch is stuck engaged. If you pick the wheels off the ground so there is almost no resistance, will it still stall the engine or will it "go?" (Be careful, don't want anyone getting hurt!!).
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From: Pauline, South Carolina
Have you checked the vacuum line to the modulator valve? I'm wondering if something strange could be happening in the transmission that would allow a faulty modulator valve to load up the intake with transmission fluid. If so, there would be fluid remnants in the hose where it connects to the vacuum tree at the intake manifold. Other question would be is the IAC ok? Does it sound like something has locked up, or is the IAC incapable of adjusting to give the added idle power for the increased torque when in gear? Also, is there a vacuum leak that could create a similar problem to a faulty IAC? If it's the IAC or a vacuum leak, you should be able to keep it running by applying just a little bit of throttle. However, if it's locking down, that will create a bigger slam when it locks up. What about if the brakes are not pressed when you engage the transmission? Does it run and move, or die?
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The torque converter lockout switch in the transmission valve body has also been replaced.
The brakes are being depressed when shifting the transmission gears.
Yes, it creates a bigger slam, when the engine is reved and the engine quits running.
The brakes are being depressed when shifting the transmission gears.
Yes, it creates a bigger slam, when the engine is reved and the engine quits running.
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From: UT
Usually this is a problem in the valve body. It seems like there's a TSB out there for some A4LD's (Can't remember if it's pre- or post- '92) where there's a spring in the valve body that collects crud and causes the TCC to get stuck on. In any case, it's probably some crud buildup somewhere in the valve body.
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Originally Posted by mrshorty
Usually this is a problem in the valve body. It seems like there's a TSB out there for some A4LD's (Can't remember if it's pre- or post- '92) where there's a spring in the valve body that collects crud and causes the TCC to get stuck on. In any case, it's probably some crud buildup somewhere in the valve body.
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The problem was the 1994 explorer w/automatic tranmission, the automatic transmission when in the park or neutral position will idle normal. When trying to engaging reverse or drive the vehicle quits (the engine quits running). Pulled the transmission pan off and no transmission deposits, transmission fluid a bit discolored.
The transmission was shifting normally and would stall as stated above. The problem was isolated in the valve body as mrshorty had stated.
The transmission was shifting normally and would stall as stated above. The problem was isolated in the valve body as mrshorty had stated.
Last edited by 1975Ford; Oct 31, 2005 at 12:20 PM.
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From: Phoenix
OK this was a mechanical issue. Ford had a TSB in 1995 for a new PCM to richen up the cold start tables to eliminate a cold/shift into gear/motor stall condition. This affected 1993 vehicles - per the TSB - but probably other years too.
Anyway - Just FYI for those following this post and specific stalling issue.
Anyway - Just FYI for those following this post and specific stalling issue.
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