Question about 2003 Toyota Corolla

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2003 toyoto corolla won't turn over but you can hear the fuel pump. Battery seems to be ok. I recently changed the radiator fan assembly because the motor went bad. Have not been able to start since.

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Check hook up to starter wires ,check battery connections _shinny clean)

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My car won't start. The battery is good and the starter is doing it's job. The fuel filter has been replaced. The car will start with starter fluid and run when revved but won't start o

check fuel pump fuse and relay also the fuel injection fuse and ecu fuse, if they are ok remove the back seat and you will see a cover remove the cover and check for voltage at the pump plug and ground, you hear the pump work if not need new pump

Apr 07, 2012 | 1997 Toyota Corolla

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Won't start after short trip like its vaper locked


Your problem may be one of the following:
First check or just replace the fuel filter. Usually located under the car in front of the rear axle, drivers side.
Next, the fuel pump may be worn out. Usually they just stop working (running).
Next, check the fuel pressure regulator. Usually located on the front fuel rail, drivers side.
Is the vacuum line attached? Not leaking or rotted?
Also, do you smell a strong fuel odor when it won't start? May be one or more stuck-open injectors, or the coil pack is bad.
Checking these in the order listed will more than likely fix your problem.
The clicking noise indicates the battery can no longer run the starter, which also means the fuel pump won't run either.

It could be a fuel issue. How old is the fuel filter? Can you hear the pump run for a few seconds when you turn the key on? Try turning the key to ON without trying to start engine three times waiting for the pump to stop running each time. Then try to start the engine. If it starts, Its a form of Vapor lock caused by the extreme heat we have had lately.

If none of this works, try a new fuel filter first. From there have someone check the fuel pressure regulator and then the pump. If you are in need of a new pump, take my word for it and spend the money to get one from FORD, and not from your favorite parts store. Most parts store parts are made in China and they are JUNK.

Have you hooked a scanner to the computer and checked the oxygen sensor(s)? If they are bad they could lean out the engine.

Check the following:
Cooling system working properly including fans.
Under hood fuel lines touching coolant or heater hoses.
Fuel lines under vehicle close to or not shielded from exhaust pipe, converter, muffler. Fuel lines pinched or crushed.
Fuel filter changed recently.
Fuel pump pressure.
Cheap(Bad) gas.

Aug 26, 2011 | 2003 Ford Taurus

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Aug 08, 2011 | 2003 Chevrolet Silverado 1500

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Where is fuel filter on 2003 corolla located, thanks.


Your model will require a fuel lock nut wrench to unlock the ring from the fuel pump assembly, which is located and mounted on/in the actual fuel containment tank. There should be an access door to remove the fuel pump and filter without actually lowering the fuel tank. The access door will be located just under the rear seat assembly, which will need to be raised or removed.

Apr 02, 2011 | 2003 Toyota Corolla

2 Answers

Hi, I have a 2003 beetle 1.8t and it has some problem. It drains the battery. I can hear a small fan type sound like coming from the front right of the motor. Sounds like its in the intake manifold. Key is...

Well it seems to be that the fan stays always ON!
It can't be the radiator fan since the engine cam is responsible to rotate that Fan, Water pump & dynamo. Does it have another small Fan which is supposed to cool the engine if the temperature eceeds a pre-set thermostatic conrol, therefore, it only runs if the above set temperature of the thermostat. This Fan draws power directly from the battery. As you have mentioned this operates even after removing the ignition key. You can verify this after having switched of the engine. To be able to locate which fan is operating, take the car to any place which is quite peacefully.
Another probability is the fuel pump, which can be traced by following the fuel pipe, since its on the fuel supply pipeline before the fuel filter and starts from the fuel Pump and connects to the fuel filter.
This pump starts pumping from the time ignition key is inserted & turned 2 notches such that the Dashboard light comes on. Do this in a similar quite place. If its operating you should be able to hear it and/or feel that slight vibration.
After this disconnect the battery terminals just to make sure that/whichever fan/pump/etc stops making any sound.
If its none of the above, then after reconnecting your battery terminal, the same sound will come if the wiring(live or -ve) is shorting against the metal body of the vehicle in such a manner that maybe just a single strand could be very near to the metal body and this sound will be of chirpy kind whose sound volume fluctuates, its volume never remains constant.
Finally it must be having a small bower assembly if not an A/c to blow in fresh air when windows are closed due to the weather condition. Just repeat the above steps and one them has to be the actual problem.
Also ensure that the chord to the battery has not collected whitish deposit or bluish CuSulphate at the battery terminals. So loosen the clamp, scrape any deposit, apply a small qty of grease and clamp it tightly.

If I had realized that I have to look for any one of the above, I might not have started the anwer, 'cos i am very, very hungry.

I sincerely hope that this soles your prob else put up the result as a comment, maybe there's something i have not considered..........sodeep

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Have your battery checked - could have dead cells. Even though you have changed fuel pump and filter is fuel getting through could be a blocked line.

Aug 24, 2009 | 1984 Toyota Corolla

1 Answer

Radiator fan

it seems to be a relay or fuse. or the temperature sensor. it is usually on the radiator or the engine block.

Nov 20, 2008 | 1992 Toyota Corolla

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