2005 ram 1500 won't start once warm. engine tries to crank, won't fire. Replaced fuel pump recently when it died while driving. Starts fine after sitting for 30 mins. 5.7 hemi

SOURCE: Ram 1500 stalls after 15-20 mins. starts again after sitting

try the fuel filter

SOURCE: will not start when it is warm,let sit for 15-30 mins..starts

Which engine is this? and also do you have a TACH gauge?

check for spark when it wont start there is a common problem with the loss of crank signal on these cars with 2.8/3.1 engines.

If you have no spark its either a crank sensor or the ignition module going bad, but the problem is you need to verify which one it is. having a tachometer would help diagnois this. if you have a tach signal and no spark most of the time its an ignition module but you would need a lab scope to 100% know which one it is. the modules are very common on these engines.

what happens is the crank signal goes to the igintion module. and then the module loses it most of the time cause the module is supposed to send the crank signal tot he ecu. you would have to make sure the signal makes it out of the module and into the ecu. if you get a signal out of the module then you have more severe problems. that need in depth diagnosis.



Michael
ASE certified
plz rate

SOURCE: dies, then wont start, after about 30 min., starts

sounds like a bad ingition coil

SOURCE: Fuel pressure intermittently drops causing sputter and die.

check for 12v constant at your fuel pump if you are not getting that replace your relay.
if you are getting 12 volts at your fuel pump the fuel pump is possible to run tuel it gets warm then shut down to a lower rpm I would then replace the fuel pump

SOURCE: 2007 dodge Ram 1500 hemi fuel cap sensor comes on

I just had the same problem, new cap, deleted the codes with a obd... took it to the dealership...
its the EGR valve that was bad on my truck 2007 dodge ram 45000 miles...
i get it back on friday, its a simple part 1 wire harness and 2 bolts and gasket.