Q&A

Sometimes the vehicle runs perfect. 50% of the time the Car hesitates, threatens to stall out at an idle, sometimes will not accelerate, makes popping sounds like small backfires when the tack hits near 3 while car is hesitating. Speedometer and odometer stopped working same time d4 light on instrument panel started flashing. Panel lights work intermittently. Was told I have a cracked engine block, bad speed sensor, and clogged air tube thingy which is supposedly only as wide as an ink pen.