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Registered
Join Date: Mar 2007
Location: iowa
Posts: 88
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Motronic Reset?
I put a new battery in my '86 911 Carrera recently and was wondering if there is a reset procedure for the Motronic ecu? I have a '92 Ferrari 348TS with two Motronic ECU's from the same era and every time you use the factory battery cut-off switch or unhook the battery you must let the car run without touching anything until the radiator fans kick on. It states in the factory service manual that the ecu has to reset it's parameters this way. I've never heard about doing this with a 911, but was wondering if anybody else has? The 911 fired up fine and I let i warm up a while for the hell of it without touching anything.
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03-26-2014, 08:33 PM
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Plug & Play !! No reset necessary .
Howard
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Howard Freeman 80 911 SC & 74 914 1.8 79 930 & 83 SC coupe,03 996 TT,02 996 C4 03 X/5 3.0. 370,186 miles now Sons daily driver 10 X5 3.0I 224,515 miles |
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03-26-2014, 08:35 PM
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As Howard alludes to, there is no reset on the 3.2 DME's, as there is no 'persistent' memory like EEPROM or FLASH memory. Every start of the 3.2 is brand new, doesn't know if it's the first start from the factory or starting up 25 years later.
Chuck.H '89 TurboLookTarga, 373k miles (10,000 starts I'm guessing?) |
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03-27-2014, 01:08 PM
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Get off my lawn!
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Yep, the reset procedure is to turn the ignition key!
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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03-27-2014, 02:13 PM
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Diss Member
Join Date: Jul 2002
Location: SC - (Aiken in the 'other' SC)
Posts: 5,022
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Wave a dead chicken counterclockwise over your head.
(Same technique works with computers too!)
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- "Speed kills! How fast do you want to go?" - anon. - "If More is better then Too Much is just right!!!" - Mad Mac Durgeloh -- Wayne - 87 Carrera coupe -> The pooch. |
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03-27-2014, 02:47 PM
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Registered
Join Date: Mar 2007
Location: iowa
Posts: 88
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Ok. Thanks guys. I figured it must have a different set up memory wise than the Ferrari.
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03-28-2014, 06:48 PM
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2014 
Carrera
