Date: Mon, 8 Nov 1999 07:46:47 -0500 From: "Eric Law" <elawxnospamxnopsamecsxnospamx.com> Subject: Re: 9000 T uphill misfire
Massey, I had exactly the same problem on my '86, turned out to be the air-mass meter. It's an expensive part, you might try to find a used one. It's also possible it could be the fuel "pre-pump", especially if the problem's worse when the fuel is low. Eric Law Massey Heide <jemassenopsamne.no> wrote in message news:Zs1V3.2980$1C4.30111nopsam1.online.no... > My 88 9000 T auto has had an intermittent misfire for some time and because > it doesn't happen every time I drive the car it is driving me mad. Most > common symptom is slight misfire at low revs (1500) just after it changes up > to 2nd or 3rd on a light throttle. If you accelerate or change down it > clears. Over the past 3 months I've changed the plugs (twice - NGK > palladium), HT leads, rotor arm, distibutor cap and fuel filter. I've > checked all the vacuum hoses and had the ignition timing and mixture > checked. My next step is to get a Saab specialist to contect it up to their > computer, but that can soon get expensive since it is not unlikely it will > run fine for them. It never happens until the car is fully warm (10-15 > minutes driving). Occasionally (but only sometimes) when going up long steep > hills it is far worse - you can feel the car running on 3 cylinders and it > doesn't clear if you accelerate or change down, but if you stop it idles > fine. I have a suspicion there is an intermttent fault with one of the > injectors, but am not sure how to identify which or whether this is the > cause. Anyone got any suggestions? > >
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