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Idle Drop Off and Surge while in gear Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting '94LandCruiserLover New User Feb 29, 2012, 12:40 PM Post #1 of 3 (2024 views) Idle Drop Off and Surge while in gear Sign In I have a 1994 Toyota Land Cruiser w/4.7ltr inline 6 w/280K -- It idles fine until I put it into gear than it will surge and then almost stall and continues to do so while stopped and when driving until about 50MPH, then it's fine. Any suggestions? Thanks! Hammer Time Ultimate Carjunky / Moderator Feb 29, 2012, 4:44 PM Post #2 of 3 (1974 views) Re: Idle Drop Off and Surge while in gear Sign In  You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. '94LandCruiserLover New User Feb 29, 2012, 8:16 PM Post #3 of 3 (1952 views) Re: Idle Drop Off and Surge while in gear Sign In I will give that a whirl on Friday! Thanks for your time and I'll let you know how it all works out!   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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