A defective fuel pump check valve (which maintains fuel pressure in the system when the vehicle is not running) may lead to long cranking times or hard starting (sometimes with stalling). The fuel pump should be replaced. However, if these symptoms are accompanied by Check Engine Light illumination, there may be a problem with the engine coolant temperature (ECT) sensor.
Hard starting due to leaking fuel pump check valve on Chrysler LHS
Average mileage: (–)
Engine affected: 3.5L V6
5 people reported this problem
0 people shared problem details
does not leak when car is turned off.
Car shut-off while driving and won't start back up. Is this the fuel pump or the coil?
the check engine light just came on randomly. I forgot to get an oil change, but I added new o...
car would suddenly stall without warning but would start right back up with no problem, now the...
The fuel level sensors can wear out and cause erratic or inaccurate fuel gauge readings.