Q: There is no power going to fuel pump. Check relay it's good.

asked by on

There is no power going to fuel pump. I changed relay still no power bought new pump still no power. The car was driving perfectly fine.before Parked it the next morning won't start

My car has 160000 miles.
My car has an automatic transmission.

Hi there. Have you inspected/replaced the fuel pump fuse? The ECM controls the fuel pump relay and this relay will only energize when commanded on. Does the check engine light come on; if not, then the ECM is not turning on. Do all the other combination meter warning lights come on? Are there any codes stored in the ECM? There are a lot of things that need to be verified before replacing any other parts as this will eventually become very expensive. Many times, the battery has failed and the vehicle will not start or provide power; it could simply be worn out or there could be a parasitic draw or a weak alternator that is not properly charging. A test of the battery with a digital tester that provides current voltage, cold cranking amps, and state of health should be done first. The battery is the heart of the electrical system and if it stumbles or fails, it can affect all other systems. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a car does not start inspection.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. There is no power going to fuel pump. Check relay it's good.

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: timing belt and driving belt replacement interval

The timing belt should be checked every 24 months or 30K miles and replaced every 48 months or 60k miles. You are not due until 173k for a timing belt replacement, but should get inspected at 143k. The accessory belts...

Q: Engine

Hey there, thanks for writing in about your 2014 Hyundai Sonata. You should start with draining the oil and replacing the filter with correct amounts of oil. Your engine being overfilled with oil may be the cause of all the...

Q: Truck overheats with new thermostat and waterpump

Hi, thanks for writing in. By reading your description of the overheating issues, I'd tend to agree that the radiator fan clutch may be the culprit of your overheating issues. However, one thing to check into is whether there might...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.