Q: No start fuel pump not priming during key on sequence also tach is not moving when cranking

asked by on

Vehicle is not starting shot power to fuel pump directly yes it pumps but doesn't prime during key on also the tach doesn't register during cranking no active codes would the fuel pump relay affect the tack threw the ecm or does the crank or cam sensor affect these symptoms

Its doubtful that the crankshaft sensor is to blame. The crankshaft sensor is used by the powertrain control module (PCM) to determine injector pulse and ignition timing, not fuel pump operation. The camshaft sensor is used to computer fuel injector pulse as well. The engine control relay is used to supply power to the PCM, which is used for both fuel pump and tach control, so this could be the problem. The problem also be the PCM itself. I recommend having a profession diagnose and repair your no start condition. YourMechanic is an excellent option since we come to your home or office.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. No start fuel pump not priming during key on sequence also tach is not moving when cranking

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: harm of replacing fuel filter

The fuel filter replacement will never be a bad thing. A clogged filter is worse.

Q: Q: On interstate, engine died, idled, no power

Hello there, The TPS can be a serious issue if the car dies like it did. I would not recommend driving the vehicle until repairs have been performed. There is no recall for this fault though there is a technical...

Q: Need to have an extra key made for my car

If you mean that you want a regular style key in addition to your key fob key, the key itself may have to be purchased from the dealership. However, any hardware store, Wal-Mart, and some auto parts stores will be...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.