Skip the auto shop - Our mechanics make house calls

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?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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: How safe is it to drive my car if I need a flexi coupler replaced

It is not safe to drive it at all with a loose steering wheel, as you could be putting yourself in grave danger if you are not able to steer your vehicle out of a possible crash. I recommend having...

Q: 2006 cadillac cts does it have struts or shocks

Hi there. The 2006 Cadillac CTS has a front shock / strut assembly as opposed to the singular strut with coil over spring option that is common with passenger cars and some smaller SUV’s. I would recommend having this service...

Q: Won' start or shift

Hello. You have a wide variety of problems there. The ignition key not turning could be due to a faulty ignition cylinder. If you are having trouble getting the car in gear and the engine will just revs up when...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.