Hello, The diagnostic tests were done at a Chrysler dealer with very fine digital equipment. I thought that you may have had some experience with this type of problem and that is why I contacted you, but I think that what you suggest is not practical nor applicable. Replacing parts without knowing what the problem is not going to solve the problem. I would like to discontinue this analysis of the problem. and your srvices.Thank you.
Hi Osx Z... my name's Ed.
I do have a suggestion that's cost-free and sometimes applies to the 2-door FJ (Sebring) models with the 2.5 engine concerning intermittent crank, no-start circumstances. When it happens, tap lightly on the ASD relay which is located on the bulkhead near the left hood hinge along with two other relays.
ASD stands for autoshutdown, the relay that's often called a "Main Relay" in many fuel injection systems but performs the same function... it powers the system up. For reasons I don't understand, Chrysler didn't monitor ASD output on these models, which can result in no-start instances with no DTCs generated. The relay contacts apparently become pitted and have difficulty transferring power to the system on an intermittent basis, making diagnosis difficult. Your cam and crank (rotation/ timing) signals will reliably set codes when bad, but this one might be flying under the radar.
I believe the ASD is serviced as a 3-pack in this model, so be prepared to buy two more relays than you actually need if it proves to be your problem. ASD definitely lives there though and it's been the only trouble source seen to date.