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Search Auto Parts Search 1987 ford aerostar tranny Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Transmission Problems silver10 User Jul 22, 2008, 12:52 AM Post #1 of 4 (2319 views) 1987 ford aerostar tranny Sign In van will start shifting normal until u get to third gear you have 2 speed up then let accelerator go and van will shift to third gear otherwise it wont shift, up hill it will be kicking in slower gear back and forth but third is hard to shift, rest of gears shift smoothly as normal exempt third gear what could be causing this if anyone has suggestions let me know what i need to do please. sorry the engine size is a 3.0 V6 Thank you... (This post was edited by silver10 on Jul 22, 2008, 1:04 AM) Tom Greenleaf Ultimate Carjunky / Moderator Jul 22, 2008, 4:31 AM Post #2 of 4 (2315 views) Re: 1987 ford aerostar tranny Sign In I'd begin with looking for small vacuum leaks, T silver10 User Jul 29, 2008, 12:50 PM Post #3 of 4 (2292 views) Re: 1987 ford aerostar tranny Sign In It only shifts hard on third going uphill not on straight road, what vacuum leak is the one u are suggesting, where are these located at if you can direct me too them thank you....... Tom Greenleaf Ultimate Carjunky / Moderator Jul 29, 2008, 2:08 PM Post #4 of 4 (2291 views) Re: 1987 ford aerostar tranny Sign In Any vacuum leak should be ruled out. Intake manifold vacuum is lower under load like the hill thing and if leaking at just the wrong spot could delay upshift or make it think there's more load than there is. Other things possible - just wanted to rule that one out, T   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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