Im getting a P1391 code and I need to find out what is making it give this code. I have a 95 xj it dies at idle and hard to start. When driving and try to accelerate it acts like it doesn't want to speed up but slowly picks up speed. When I go to start it when cold it turns over many times and then it's like it fires on the exhaust stoke. I can try to start it again and it turns over several times then starts. I changed the crank position sensor and the pickup coil. Can someone please help me with this code. Thanks.