Hyundai Elantra 1998 Automatic wagon Elantra 50000 miles
Had old maf sensor car shimmied higher speeds. Changed maf due to check engine code maf bad. ( Which way does the maf's arrow point?) Shimmy slowed down but now with new maf car seems to be backfiring/ bucking low or high speed and shimmy is back. What's the problem please help? 1998 Hyundai Elantra. 180,000 km's