Re: 1996 900SE Check engine light - ordeal - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: 1996 900SE Check engine light - ordeal
Posted by Dean (more from Dean) on Mon, 2 Apr 2001 11:33:02
In Reply to: 1996 900SE Check engine light - ordeal, JM Griffin, Mon, 2 Apr 2001 00:03:57
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I assume that the dealer is getting a code that indicates that the voltage from the O2 sensor is not getting into range fast enough. It does not put out a signal until it gets hot. These are 3 wire units with heaters to make them heat up faster.
Fuse #38 25 amp is for the O2 sensors. Check that.
Does the engine run strong? Is the idle smooth?
The O2 sensors can run well beyond 100000 miles. If the front sensor was good, and the rear was reading bad, but was a known good unit, perhaps the cat converter is bad. The cat converter might have an 8 year warrranty. Not sure about that. Some pollution gear has a longer warranty. The owners manual would detail this.
Perhaps the ECU is at fault.
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