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Showing results for tags 'shudder'.
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Update: So this issue as discussed ended up having nothing to do with a Misfire. It was a quick shudder from the torque converter that can feel just like a misfire. The confusion came about as multiple issues happened at the same time. The valvetronic motor needed replacing and a coil pack died. The main issue is a shudder caused by the GM made torque converter. A common failure in all vehicles that use this gearbox. Usually occurs when the gearbox fluid is old or low. The fix: A transmission service. Filled it correctly (took two litres more than came out and is the correct amount). And an additive from Lubegaurd call anti shudder. I have had no further issues in the 1000km I have tested. My first issue with my E87. Strangely I am not angry about it. Car's been so good that I have had nothing to do on it. So on Saturday during a trip to Napier I noticed a short vibration under load at lower RPM (2500 to 4000). Vibration would only last a second then it was gone. At first I thought it was something mechanical like a gearbox issue or driveshaft donunt. But the issue is intermittent. And I noticed a little loss of power when it is occurring. So it has to be a misfire of some type. I quick google and it seems pretty common especially for cars doing short trips in the cold. Well I am doing the shortest of trips in the cold. Less than 2km's per trip and it's been in the negatives over the last week. The annoying thing is I am getting no codes. So if it is a plug, coil pack or injector I have no idea which one. Does anyone have any tips on hunting them down. I have tried two of my cheap scan tools with no luck. Will plug the laptop in and check too. I have heard these engines are sensitive to what plug is installed. And the Brits keep talking about injector recalls which I can find nothing about in NZ.
