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stalling/alternator? (longish descrip.) Posted by Doug [Email]  (#3538) [Profile/Gallery]
(more from Doug) on Mon, 8 Sep 2003 10:19:57
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On the way out to the convention, I noticed that my boost wasn't running as high or aggressively on my 91SPG. Jumping on the throttle didn't result in the usual jump just into the red. My first instinct was that maybe my St. II APC box had a gremlin, no big deal, car's running fine otherwise. And I figure, my clean car on its way to the convention, on such a beautiful day, this was just karma reminding me that when life looks like easy street.... I refused to fixate on the problem.
Pulling into Hershey, the car begins to stall as soon as I put the clutch in, resulting in a couple of rolling restarts (fired and idled immediately, did NOT require extra throttle), and a couple stalls at stoplights. Still, I'm able to nurse it through, running up the rpms a little higher than normal, but nothing seems catostrophic. Just maybe funky AIC or something.
Moving the car around at the convention, it continues stalling problem, and now I'm noticing the alternator squeeking some (having had tunes or road noise for the ride out, tough to say when this started).
At the end of the day, I nurse the car out of Hershey, only to have the alternator really screeching when I pull off for coffee. Screeching seems to subside at sustained, higher RPMs (i.e. highway speed or high neutral idle), and now I'm smelling a distinct burnt rubber sort of smell. Pulling out of the rest stop, the cars stalls as I'm engaging clutch/disengaging throttle to upshift and accelerate. Now I'm concerned, as I'm not sure I can trust the car to keep moving, pass cars, etc. But, I'm in the middle of nowhere, so I cautiously press on. (Perhaps unrelated, but I had noticed two distinct 'pops' which I could feel, not just hear, through the frame of the car, while at highway speed--one before the rest stop, one after. Sounded as if something under pressure had let loose. One time, I can chalk it up to hitting something unseen on the road. Two times, too coincidental. Didn't seem to affect the engine's performance, though.)
By the time I'm close to home on local roads, I'm forced to take the car out of gear and use my ebrake to stop, so I can keep my right foot on the throttle to keep the revs up, and prevent stall. While 'idling' at lights, I'm running like 2-3k rpms to prevent stalling, and the alternator noise now seems indifferent to the idle rpms or anything. Note that the car had not exhibited any apparent charging problems, like the battery discharge light slowly coming on.
At home, did a cursory check of vaccuum lines, alt. belts, all negative. The car still fires up no problem, but now, stepping on the throttle, the car would either die immediately, or try to stall if throttle is increased gradually. Getting the car moving in gear is a real project, as letting up on the clutch at any rpm seems to result in stall. So I can sort of get the rpms up in neutral, but moving seems unlikely.
Does any of this sound interconnected? The stalling, and maybe the boost problem, would direct me to a fuel problem--pump, filter, etc. So, is the altenator noise a cruel coincidence? I can probably schedule in at my shop this week, but getting it there is a real concern now, so I'm wondering if there's easier stuff I can check first.
posted by 192.189.3...
, Mon, 8 Sep 2003 10:19:57 <-- Viewing This Message
, Mon, 8 Sep 2003 10:39:30
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