thatsmydawg
+1y
91 xj loses spark an fuel pump only when it's cold. I crank an crank if I don't hear the fuel pump it won't start. I shut the Key off an I hear the computer clicking an I hear the idle air control motor clicking also. Jeep won't start if this is happening so I wait a minute an once the clicking stops it starts right up. I replaced the auto shutdown an fuel pump relays. Any ideas? I went to crank it once an OT wouldn't crank. I changed the starter relay an it started right up. Few times it didn't start I tapped on the coolant temp sensor an randomly it started right up which makes no sense. I'm stumped. Any ideas?