What causes Hesitation and rough idle in drive 1998 Jeep Wrangler?
99 Wrangler which misfires and runs very rough have replaced plugs wires cap pick up coil ign coil crank sensor and even the distributor HELP?
There are many different causes of poor vehicle performance. Here are some examples. If the engine RPMs are high but the vehicle will not reach normal speed then there is a problem with the engine's connection to the drive line. If the engine is running rough it will not be able to produce a normal amount of power. If the exhaust is plugged the engine will not be able to breath. There are many more…
If your car is shaking it could be poor suspension alignment can cause a car to shake and vibrate, and other possible causes are bent or worn suspension parts, old tires, bent wheels and bad brakes. If your car sounds especially rough at speed, the problem could lie with the car's spark plugs and wires. Spark plugs fire more frequently the faster you drive, and the engine will sound rough when they begin to fail.