Even if you could implement a simple switch I wouldn't recommend it in an emissions state. IACs are usually a stepper of some sort so a single switch won't work the majority of the time anyways.
The high idle in a manual transmission car is most likely because the manufacturer just took the auto transmission program and flashed it to the manual ECU sans auto trans code. The reason it is in there for the automatic has to do with transmission safety. Only my Cressida did the high idle when coasting thing and that car couldn't be flat towed. The Tracker would drop to a normal idle at 70 when I put it into neutral and so does the Durango. Both cars are safe to flat tow. It's likely that if the engine speed isn't high enough in some cars that there isn't enough to keep the bearings pressurized where they need to be. The following is a list of vehicles safe for flat towing. If your car isn't on the list it's likely that you'll have a high idle in neutral. Cars Chevrolet Cavalier Coupe & Sedan Malibu Daimler-Chrysler Neon PT Cruiser Sebring/GTC Stratus Coupe Ford Focus Mustang ZX2 Hyundai Accent Elantra Sonata Tiburon Nissan 350Z Altima 2.5 Maxima Sentra Oldsmobile Alero GX Coupe Pontiac GrandAm SE Sunfire Vibe Saturn ION Sedan L-Series Subaru Impreza 2.5 Sedan & Wagon Legacy L & Wagon Versions Outback Sport WRX & Wagon Versions Suzuki Aerio S/GS Sedan & SX Wagon Toyota Camry LE Celica GT & GT-S Corolla CE Echo Matrix 2WD MR2 SUVs & Pickups Acura MDX Chevrolet Avalanche Blazer 2DR 4WD Envoy/Trailblazer 4WD Silverado/Sierra 1500 Series 4WD Suburban/Yukon XL 4WD Tahoe/Yukon 4WD Tracker 4WD Dodge Dakota 4WD Durango 4WD Ram 4WD Ford Escape 2WD & 4WD Explorer F-150 4WD F-250/350 SD 4WD Ranger 2WD & 4WD Honda CR-V Element Pilot Hummer H2 Hyundai Santa Fe FWD Isuzu Ascender 4WD Jeep Liberty 4WD Grand Cherokee 4WD Wrangler Land Rover Discovery 4.6 Range Rover Mazda B-Series 2WD & 4WD Tribute DX FWD Nissan Frontier 2WD & 4WD Pathfinder SE 4WD Xterra 4WD Saturn VUE Subaru Baja Forester 2.5X Outback Wagon Suzuki Vitara & Grand Vitara 4WD XL-7 4WD Toyota RAV4 2WD & 4WD If your car isn't on the list, check the owner's manual. If you have a 2wd version of the 4wd listed check the manual as well. Anything about only towing the drive wheels at a low speed and/or a short distance you probably have a high idle in neutral coasting. |
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That list is inaccurate, unless it stipulates that the engine must be running. Where did you get it?
I'll double check the manual, but I'm pretty sure that my Silverado/Sierra 1500 Series 4WD doesn't allow flat towing, even with the transfer case in neutral. |
I got the list from an RV information site. Won't let you flat tow with the tcase in neutral?
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Tomorrow night I'll have to remember to check my manual.
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https://www.allofftopic.com/images/smilies/lol.gif I never tried it, and I'd recommend everyone confirm that their particular vehicle, as equipped, is good to go before doing it...
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back from the grave...
My little stick shift Metro did the same thing. Found out that the speed sensor was keeping the RPMs high in order to make shifting easier. Once the car came to a complete stop, the idle dropped to factory specs. I "solved" this by disconnecting the IAC electrical connector. I can now neutral coast at factory idle. |
all u need is a console mounted on off switch shizamm!
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