The car judders on and off when running at all speeds, quite jerky. The colour of the exhaust pipe is black. Mixture too rich? I have recent emissions test results if that helps? It passed MoT in November.
Could be a lot of things. A 94 will probably have one o2 sensor and I'd suspect that first, along with crankshaft speed sensor or engine temperature sensor maybe, camhaft position sensor or MAF. Test result would help.
