Date: Fri, 21 Feb 2003 00:02:22 -0500 From: "Brian Dean" <BJDinNCnopsamsouth.net> Subject: '91 Saab 900 2.1 non-turbo w/poor performance on acceleration
I have a 1991 Saab 900, 2.1 non-turbo with 140,000 miles in good repair. Beginning several weeks ago, it began to lurch when accelerating under load. This lurching feels like momentary complete power cut-out by the engine ... sudden in nature with immediate resolution... i.e., it seems to studder rapidly while accelerating under load. If the clutch is pressed in it will clear and rev freely. This occurs at start-up and continues, regardless of operating temperature. There are NO problem codes set by the on-board diagnostics. The vehicle has a new dist rotor, dist cap, and spark plugs. All are correct factory specified components. The head gasket was replaced about 10,000 miles ago without incident and the car ran faultlessly until just several weeks ago (probably less than 500 miles with this problem). Any ideas would be appreciated... Brian