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Date: 20 Aug 2002 14:15:37 -0600
From: andrewunix <agreenbunopsamnet>
Subject: Re: Opinion sought - automatic transmission overhaul worth it?


Tue, 20 Aug 2002 16:04:22 -0400, noonenopsamspring.com suggested: : sounds like more of an idle problem than a tranny problem. How does it : shift 1-2 2-3 3-4? Does it lag getting into gear? These are common : tranny issues. It sounds like an engine control/vacuum leak problem. It occasionally shifts rather jerkily. I was once driving it particularly roughly as an experiment and did get it to go into limp mode, but that's never happened under normal operation. The thing that's peculiar to me is that the idle is just fine when in Park or Neutral, which would seem contrary to what I understand about vacuum leaks. When the dealership had it, they said that it returned no codes. I've been unable to find any vacuum leaks other than speculating that one might be created by the dead Secondary Air Injection pump. : Your car does not have a distributor, but a DI cassette, I am pretty : sure. Nope, this is a 900 S 2.3 N/A. No turbo, no DI cassette. : Current, oscillating idle with A/C is probably due to A/C kicking : on and off. Well, I would hope that my A/C isn't kicking on and off at a rate of once per second ;). : I know nothing about the air injection pump. The air injection pump is on 1994-1997 Saab 900 non-turbo 4-cylinders. It runs for a couple minutes when the engine is first started to improve cold start emissions and also to bring the engine up to temperature more quickly. : I'm thinking a : good mechanic could sort out your idle/running problems and that it is : not tranny related. I may be wrong, though... Unfortunately, I'm starting to have my doubts about the ability of either mechanic I've worked with to track down this problem. The independent seems completely perplexed by it (he specializes mostly in classic 900s, really) and the dealer doesn't really seem to acknowledge it. -- agreenbu Return to Main Index
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