Originally Posted by jetboy287
It's possible that it's the cps but does that control the fuel pump?? I thought that it just worked the firing order. I really don't know when it had a tune up last but the plugs and wires look brand new I've only had it about a month and it's just started giving me grief. What does the auto shutdown do? What sensors does it look at?
yes if the pcm doesn't get signal from the CPS it will not engage the circuit for the coil of fuel pump. this is how the pcm keeps the engine from getting flooded with gasoline.
i know this problem has been solved but since i'm having this exact problem i will be opening up my PCM this coming weekend (my yj has a 93 zj 5.2), so this is also my way to sub for future reference.