Re: Periodic misfire episodes (long) - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Periodic misfire episodes (long)
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Posted by Paul-MD (more from Paul-MD) on Thu, 14 Sep 2006 22:18:19 Share Post by Email
In Reply to: Re: Periodic misfire episodes (long), Dean, Thu, 14 Sep 2006 21:19:22
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Will check the vac lines to FPR and MAP, thanks.

Techron concentrate is all I use.

Good point about the engine ground, I'll check that also. You mentioned the rad fan. It's been constantly cycling on and off when the engine is idling and at normal temp for quite some time now. Maybe the thermostat has gone bad and it continues to cycle even at road speed? Even if it does, I never noticed it drawing a significant load, but maybe I just never paid close enough attention to it.

When this first happened, I considered the DIC, but didn't want to believe it, as it only has 25K on it. I've read here that some had problems from day one, but mine has been solid to this point. Plus, my original DIC whent bad at 110K, so I was hoping to get close to that. I should test an alternate though to rule it in/out. All this time I've owned the car I've never carried a spare (living dangerously), but I guess it's time to purchase a backup from eeuroparts.

Thanks again for the input.

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