Re: CHANGED BATTERY - RUNNING ROUGH WITH - Saab 9000 Bulletin Board - Saabnet.com
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Re: CHANGED BATTERY - RUNNING ROUGH WITH
Posted by DAO [Email] (more from DAO) on Mon, 7 Nov 2016 03:50:30
In Reply to: Re: CHANGED BATTERY - RUNNING ROUGH WITH, Craig, Fri, 28 Oct 2016 08:33:34
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The crazy tach and rough running only occurs when the engine compartment is cold. When it's running rough they can't get an ODB reading. When it's running rough and I turn on all the electronics, lights and heated seats... the engine runs normal. Or if I warm the car up and resart it it the car runs normal.
I'm thinking voltage regulator or alternator with a broken or worn connection that expands when the part heats up.
I replaced the battery because the old one had a bad cell, so I'm thinking the lower output on the old battery was hidng the problem and now with a stronger battery its emphasing the problem.
97 Aero 5 speed
posted by 68.1.191...
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