Have Jeep Questions? Ask a Jeep Repair Expert for Answers
Hello and welcome! My name is ***** ***** I can assist you with your question. First thing to do is check to see if the engine has spark. If so, check to see if the engine runs on starting fluid. If it runs on starting fluid, then you just have a lack of fuel. If it does not have spark, you need to check the ignition system and computer system to ensure it is in good working order.
I would start by checking to ensure that the computer is awake with the key on. Check to see if the check engine light comes on with the key on and that the TPS has 5 volts with the key on.
If this checks out, the cam and crank signals need to be checked using a lab scope
YES, that is correct. You would be looking for a signal from both the cam and crank sensors while the engine is turning over
You can test these right at the sensors or directly at the PCM. You are going to want to see an on off signal as the engine is cranking over.
Did you have any further questions?