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Starter voltage pretty low, even with a new battery, on 97 Aero Posted by John Fitzgerald [Email] ![]() ![]() ![]() |
Winter starting voltage on this 97 Aero is 10.6 to 10.8 volts, pretty consistantly, with recently changed 10w-30 Royal Purple synthetic oil. Even when the engine is warm, the starter motors a couple of seconds longer than with my 87 9kt. After sitting outside for 3 to 4 days in fairly cold (teens, 20's) Wisconsin weather, it sometimes drops to 10.2 volts. Might this be a problem with the ignition switch?
Brand new Optima spiral cell battery installed last month -- same readings. Alternator output seems fine 14.2 to 14.5, depending on how many accesories are on.
Car only has 22k mi on it. It's a five speed. I've never seen such low voltages in many thousands of starts on my 86 or 87 9kt.
_______________________________________ John Burlington, Wisc '73 96 RHD sold after four years in Middle Barton, Oxfordshire, UK '80 99 bought new, sold after 20 years/192,000mi '86 9kT picked up at Trollhatten, sold after 12 years/approx 121,000 mi '87 9kT sold after 9 years/approx 174,000 mi '94 CSE given to my son after 8 years @ 245k; he sold it at 254k mi '95 Aero 146,xxx mi sold '98 CSE 248,xxx mi gave it away '97 Aero 317,xxx mi my daughter’s school car … gave away [we put 300k mi on it] still driving: '97 CSE 170xxx mi 'project car' for myself and my daughters to drive '07 9-3 2.0T 240xxx '08 9-5 191xxx mi my wife's daily driver and a couple of 'non-Saabs': '01 Suburban 201,xxx mi '03 BMW 330 Cic 84,xxx mi '14 Mercedes E350 103,xxx mi
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