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Sounds like maybe your vacuum modulator hose is split, (common) or has fallen off (somewhat common) or the vacuum modulator is defective (not as common) VM is on the passenger side of the transmission. Look for a a metal cylinder protrouding out of the side of the transmission, near the front, just above the oil pan rail on the tranny. It has a vacuum hose attached to it, that's all. Held in by one bolt and a u-bracket. Check the vacuum hose from there all the way up to the engine. Make sure the hose has vacuum connection at the engine. If in doubt, put a vacuum gauge on it. If, when you pull the hose off, the hose has any transmission fluid INSIDE of it, even a mist or light coating, the modulator diaphragm is toast. Replace it. It is cheap and easy. Don't guess on the hose either. VERIFY that it is not leaking. They often split near the nipple where they're attached. Flex the hose in several directions to find a split. Good luck.
CoolBlueGlow
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∙ 15y ago
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