My LJ refused to start in the Lowe's parking lot. It will crank at a normal level but will not start. I had it towed home, and here it sits.
Background. I have read all of the threads I can find about "crank won't start," and I believe that my problem is the fuel pump.
1) There are no relevant CEL codes. [I do get P0218 "High Temperature Mode Activated" which I think means a stuck thermostat. However, the CEL is not actually on, and I replaced the thermostat last year after getting the code. Maybe it's still in the memory somewhere, or maybe the thermostat is bad. But anyway, not relevant to this problem I don't believe.]
2) When the key turns to the on position, I can hear the fuel pump run for a second or two. It's not whining per se, but the whirring sound does seem louder than normal to me. You can hear it clearly standing anywhere around the Jeep.
3) My battery is good and all of the electronics are working.
4) The trick of initiating the pump 10-12 times in a row has no effect.
5) When I put some starter fluid into the throttle body, it ran for a couple of seconds and died. This suggests that it's not anything electronic.
Questions.
1) Could it still be the crankshaft position sensor? Would that necessarily throw a CEL?
2) Is it clear enough that the problem is the fuel pump, or do I need to do an actual fuel pressure test? The reason I ask is that I don't have a tester and I would also need to rig up the extra tubing to get around the no-schrader-valve problem.
3) The tank is about 2/3 full. Would you drop it and then siphon out fuel before you raise it? Or maybe try to do everything with fuel in it? [I have read that a siphon tube will not go through the fill hole into the tank?]
Thanks so much! The bolts are stewing in Kroil as I type.
Bryan
Background. I have read all of the threads I can find about "crank won't start," and I believe that my problem is the fuel pump.
1) There are no relevant CEL codes. [I do get P0218 "High Temperature Mode Activated" which I think means a stuck thermostat. However, the CEL is not actually on, and I replaced the thermostat last year after getting the code. Maybe it's still in the memory somewhere, or maybe the thermostat is bad. But anyway, not relevant to this problem I don't believe.]
2) When the key turns to the on position, I can hear the fuel pump run for a second or two. It's not whining per se, but the whirring sound does seem louder than normal to me. You can hear it clearly standing anywhere around the Jeep.
3) My battery is good and all of the electronics are working.
4) The trick of initiating the pump 10-12 times in a row has no effect.
5) When I put some starter fluid into the throttle body, it ran for a couple of seconds and died. This suggests that it's not anything electronic.
Questions.
1) Could it still be the crankshaft position sensor? Would that necessarily throw a CEL?
2) Is it clear enough that the problem is the fuel pump, or do I need to do an actual fuel pressure test? The reason I ask is that I don't have a tester and I would also need to rig up the extra tubing to get around the no-schrader-valve problem.
3) The tank is about 2/3 full. Would you drop it and then siphon out fuel before you raise it? Or maybe try to do everything with fuel in it? [I have read that a siphon tube will not go through the fill hole into the tank?]
Thanks so much! The bolts are stewing in Kroil as I type.
Bryan