Re: Runs great, then like crap...bad cat? - Saab 900 Bulletin Board - Saabnet.com
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Re: Runs great, then like crap...bad cat?
Posted by tweetiedancer [Email] (more from tweetiedancer) on Mon, 29 May 2017 15:29:35
In Reply to: Re: Runs great, then like crap...bad cat?, K-Saab [Profile/Gallery]
, Mon, 29 May 2017 07:47:37
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Be sure your alternator is putting out power and the battery is getting charged. I found the same issues you had and it was because the battery voltage was dropping after driving for a while. After letting the warm motor cool for a bit, it would start up and run great until the battery voltage dropped again. Put a voltmeter on the battery and see if the voltage drops as the motor is running. If it is dropping very slowly, just wait for the motor to start stumbling and losing power and see what the voltage reading is. The alternator light may not be on, but the alternator could be outputting just enough voltage to make the light go out, but not enough to keep the fuel pump, ignition and brake lights with enough power.
posted by 24.147.14...
Posts in this Thread:
- Runs great, then like crap...bad cat?, Jawerdna , Mon, 29 May 2017 07:18:35
- Any news? n/m, U2bC, Sun, 4 Jun 2017 18:01:19
- COMMON PROBLEM... TEMP SENSOR on manifold, Used to be Chaz, Fri, 2 Jun 2017 08:16:36
- Re: Runs great, then like crap...bad cat?, Bernie , Mon, 29 May 2017 17:51:58
- Re: Runs great, then like crap...bad cat?, K-Saab , Mon, 29 May 2017 07:47:37
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