Corolla Won't Start!

[Karlbarkley]

Hello my 2003 toyota corolla 2.0 d4d won't start when it's hot like if I turn it off at petrol station then get back in it just won't start till it cools down abit I have changed fuel filter but this did not seem to help, diagnostics didn't show up any fault aether. I have also changed glow plugs I need help ASAP please

[buklau111]

Out of interest is there a oil leak anywhere? Had the same problem some time back in a Hyundai. Would not start when it was hot, gasket was on its way out and it just wouldent start until engine went cold.

[Karlbarkley]

Hello thanks for the reply I don't have any oil leaks

[Raistlin]

Open the bonnet on your Toyota.

Place your hand near the engine to feel how warm it is. If the engine is extremely hot, it may have recently overheated and shut off automatically. Allow for it to cool for 45 to 60 minutes to see if it is able to start up again. While the engine is cooling, check the reservoir for radiator coolant. If it is below the minimum line on the reservoir, use a funnel to add more 50/50 coolant or add distilled water.

Check the drivebelt's tension and deflection depth with a ruler if the car has been idling roughly or stalls out immediately after cranking. If the belt is less than 12 inches in distance between pulleys, check the deflection distance between the pulleys. The belt should have a deflection of about 1/4 inch. If the belt is more than 12 inches, the deflection should be between 1/4 and 1/2 inch. If the belt is too loose, it will deflect more. Tighten the adjuster pulley bolt with a socket wrench until the deflection reaches its proper height.

Use an OBD II scanner to check any vehicle codes that are showing up if the check engine light is on. A variety of sensors may need replacement or, if the sensors themselves are good, the electrical systems connecting the sensors to the engine control unit computer may be faulty. Specific sensors that may show up on the OBD II scan include O2, manifold absolute pressure sensor, knock sensor, coolant temperature sensor, air intake temperature sensor or the exhaust gas regulation sensor.

Replace the spark plugs if they have not been replaced within the past year. Remove the wires and caps to the old spark plugs. Use a spark plug puller and socket wrench to remove and install the new spark plugs.

Check the air filter on the Toyota, which may be dirty or clogged. If the air intake assembly is disconnected or jostled loose from the air filter box, the engine may not start when hot. Replace the air filter and inspect all of the air intake components to make sure they are properly connected.

[Karlbarkley]

Thanks for the reply but the coolant levels are fine it has just had a full service and all the drive belts changed, I will check the tension tho the car Dosent shut off itself it happens when I shut it off like when I fill up with fuel I have checked the air intake this morning and all is fine :(

[Cyker]

Hi!

The problem is most likely with the starter motor - There is a known problem with them not working properly when hot; Someone posted the toyota service bulletin number here a while back but can't find it.

Easiest fix is to just replace the starter motor; They fixed the problem in all the replacement parts.