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Classic Saab 9-5 (MY 1998-2010) / Re: Bucking or jerking of vehicle and Blinking check engine light
« on: 01 June 2012, 07:08:38 AM »
The engine light was on and off for few days and then stayed on. So I took the vehicle to the shop. . . I was hoping it was going to be something related to the issue posted earlier, but I was suspecting it was going to be the oxygen sensor, because I had replaced it in August 2011, and it did the same on and off routine with the CEL back then. There was an air leak because of a bolt on the turbo that was broken which I believe is where the down pipe comes out from. This caused the oxygen sensor to go bad and it was making a horrible noise because of it. It was fixed , air leak and oxygen sensor replaced. So I thought the problem was solved, and I took it out for a spin and accelerated while the engine was already pressured, it started off okay but then went back to the fault (bucking or shuttering and CEL blinking). It kept shuttering and bucking ,as before, until I took my foot off the accelerator and the CEL did not turn off until the engine settled and then by application of the accelerator. It kept flashing until I accelerated again after the fault had settled and then it went away. The shop checked for faulty codes but nothing came up because there was no CEL lit and they said they was not much they could do with just an explanation of the problem but no fault code. So what do you guys suggest?