Date: Fri, 08 Jul 2005 09:26:10 +0100 From: Grunff <grunffnospam.com> Subject: Re: 89T hesitates revving, loses power at low speed
Tom wrote: > My '89 9000T has started hesitating, by which in this case I mean that > I've had several instances now where at low speed, say 25mph, I want to > speed up but applying the pedal doesn't increase the revs at all. In > fact the revs I still have aren't powering the car forward. So for a few > seconds I'm just rolling as if in neutral, then something 'catches' and > the motor revs up. It feels like the car is about to stall completely, > but it doesn't quite do that. > > After the first couple of instances I did some web research and found > one thing I could do myself right away. The idea was to get off premium > gas (I usually run 92 octane). I had room for only about 6 gallons, so I > added that in 89 octane. It happened again anyway. I then took it to a > knowledgeable SAAB mechanic (Ryan's in Northampton, MA) and of course > they couldn't get the symptom to appear on a test drive. Nevertheless > they found a failed turbo bypass (hooter) valve, replaced it, and > cleaned the throttle plate. > > For a few days after that, maybe just 75 miles, it didn't happen. Then > last Sunday it happened as I was exiting a turnpike tollbooth (after > running at 85mph for an hour). Since then it happens every time I take > the car out, within as little as 100 yards, up to as far as 2 miles. So > it's not a running hot symptom. These last few instances have been not > quite as alarming as the first three, lasting maybe 3 seconds instead of > the previous 6 seconds. I now have another appointment at Ryan's on > Monday. > > Meanwhile, any guru ideas? It could be one of a number of things, but I'd start off by examining the AMM and the connector which plugs into the AMM - a fault there would produce these symptoms. -- Grunff
 |
 |
 |
 |
 |
