Skip the auto shop - Our mechanics make house calls

Q: Engine cranks but wont run. Power not reaching fuel pump

asked by on

I have a 2000 toyota avensis engine= 1.6 4afe that me and my brother mess about in. It was left sitting for 2 months with very little petrol. Last week i connected the battery and it started. I then turned it off, Quarter filled it with fuel and tried to start it again with no luck. I have tested the fuel pump on its own and it works. But i cannot get it to run when turning the key.i think it is a relay problem . What do you think is the problem ?

My car has a manual transmission.

A: This sounds like you may not have any power...

This sounds like you may not have any power going to the fuel pump relay. The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump your ECU actually connects one of the ground wires to complete the circuit and send power to the fuel pump. If the wires all have power running through them, then it is likely you have a faulty relay. The wire coming from the fuel pump is the other ground wire. I would recommend having an expert from YourMechanic come to your location to diagnose your wiring as this can be very difficult and time consuming without the proper wiring diagram.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My car's water pump failure is causing my engine to overheat

An engine will overheat within minutes, often within 1 minute, once the water pump stops circulating coolant. Of course, the practical concern is how much overheating (how high a temperature) does it take, and for what duration, before permanent damage...

Q: Minivan rattles and steering wheel vibrates

Steering wheel vibration during turns might be an outer constant velocity joint. The mechanic can check general condition of the engine, even if the engine noises are not present when the vehicle is checked. Check aftermarket automotive suppliers for non-factory...

Q: Fuel not getting to fuel pump

Hi there. In 1978 there were manual fuel pumps installed on Camaros and sometimes take a long time to prime. I would recommend having a technician come out and get your fuel system primed by manually pouring fuel into the...

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control 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.