New to the forum, can't believe there's a whole forum just for the Grand Marquis, awesome!
I'm helping a friend with her 1984 with the 5.0 and AOD. It shifts very hard from park into drive and reverse and also shifts very hard from first to second. Haven't personally driven it fast enough to see about the 2-3 and 3-4 shifts. She just had a shop change the transmission fluid and filter and they seriously overfilled the transmission. It's an inch or two above the full line. Going to siphon it out to get it back down to the proper level this weekend and not driving it anymore until that's done. She also said that the car started stalling when going very slow or coming to a stop. This was only after the shop changed (and overfilled) the transmission fluid.
Questions:
Will overfilling the transmission by that much damage it? I'll measure how much extra comes out when I siphon it.
Will having too much fluid in the transmission cause it to stall? Perhaps not allowing the transmission to disengage from the engine?
Are there any typical reasons that would cause a hard shift as described? That was the original reason she brought it to a shop to have the transmission fluid and filter changed.
I'll update what the transmission feels like after the fluid is at the correct level.
Any input is greatly appreciated. Thanks in advance.
I'm helping a friend with her 1984 with the 5.0 and AOD. It shifts very hard from park into drive and reverse and also shifts very hard from first to second. Haven't personally driven it fast enough to see about the 2-3 and 3-4 shifts. She just had a shop change the transmission fluid and filter and they seriously overfilled the transmission. It's an inch or two above the full line. Going to siphon it out to get it back down to the proper level this weekend and not driving it anymore until that's done. She also said that the car started stalling when going very slow or coming to a stop. This was only after the shop changed (and overfilled) the transmission fluid.
Questions:
Will overfilling the transmission by that much damage it? I'll measure how much extra comes out when I siphon it.
Will having too much fluid in the transmission cause it to stall? Perhaps not allowing the transmission to disengage from the engine?
Are there any typical reasons that would cause a hard shift as described? That was the original reason she brought it to a shop to have the transmission fluid and filter changed.
I'll update what the transmission feels like after the fluid is at the correct level.
Any input is greatly appreciated. Thanks in advance.
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