Hello guys,
I'm stuck... My dear econoline doesn't want to start. It cranks but nothing happen. My mechanic first changed the fuel pump module, it wasn't the problem. I had to tow it to an other garage... because he couldn't find the problem. The other mechanics told me it was my fuel pump (I had doubt because I could still hear it) he changed it (800$CAD). It started at the garage but today, no response... I heard about the inertia switch, everything is fine there..
Any idea what I should try?
Thanks a lot for your time.
PS: I know my mechanic sold me a battery with a bit less amp. He told me it won't be a problem. The battery has 1 year... Do you think it could be the source of the problem? Not enough amp?

 

If you can hear the fuel pump run for the usual 2-3 seconds when you first turn the key on , electrically it is getting the signal to run, but that is not everything.

I would suggest that you have some one check the FRP (Fuel Rail Pressure sensor) It is possibly giving false info to the PCM ..
It could be sending false info and not necessarily throw a code. The PCM will send info to the fuel pump driver module based on the info from the FRP. and the driver module controls the time the fuel pump is energized. The Driver module also sends info back to the PCM.

Not clear on your description of the inertia sw. It should have power to it when the key is first turned on (2-3 seconds) AND when cranking the engine.
Many good fuel pumps are replaced because the shop did not confirm good electrical connections to the fuel pump. Poor ground is top contender.

 

Thanks a lot for your response! I'll have someone go check the FRP.
I wasn't clear about the inertia switch... I heard this switch is a common problem... had a look at it... everything all right there.
Thanks a lot!
Have a nice time!!!