2002 hyundai accent stops running after warming up

SOURCE: My 1990 hyundai excel......

Hi,

If I understand your concern, the car stalls and dies, will not restart immediately but will after sometime. This could be anything and the best diagnostic action would be to have the car's computer scanned for fault/error codes.

In any case, initial suspect would be an overheating and/or intermittent electrical component. This would include:

• relays;
• fuse;
• fuse holder;
• connectors.

Often the relays and fuse for the engine is located in a common block/box near the battery. In some instances there would be likewise would be under the dash or any of the kick panels.

To help you narrow down the probable fault, next time the engine stalls or will not start, pls try below procedures.

Most gasoline engines would need only two (2) elements to run; fuel and ignition (spark) at the right moment. Based on your post, "start running normally", it would then be assumed that the "at the right moment" is good. Next to check then would be for the presence of spark; this could be performed by removing one of the spark plugs, reconnecting the said plug to its wire, let it rest on any exposed metal and crank the engine. There should be a pulsating spark at the end, if yes then problem is most likely elsewhere, if none, then next to check (depending on the engine type) would be the:

• high tension wires;
• distributor;
• distributor cap;
• rotor;
• ignition module;
• ignition B+12.

If there is spark and yet would not run, then the fuel delivery to the engine has to be checked. Since you have replaced the fuel pump and filter, we can focus on the engine side. There are two checks on the injector:

• electrical - pulsating +12 on each of the injectors while cranking, if none, check the ECM/ECU;
• fuel spray - you need to remove all and check if each will spray fuel (while cranking). For safety reasons, pls have several disposable containers ready to catch the fuel, paper towels or rugs to wipe/clean off any spilled raw fuel. If yes, problem is elsewhere, if not and no pulsating +12 while cranking, ECM wiring or connector, if there is pulsating +12 yet no fuel spray, then defective injectors or defective high pressure pump.

In some instances, it could be the alarm/security/immobilizer acting up which prevents the engine to run.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

SOURCE: 2000 Hyundai Accent will suddenly stall and wont restart

Have someone check the idle sensor. I had to have mine replaced along with another that I don't remember which one is was.

SOURCE: Hyundai Accent stalls and won't restart for 15 - 30 minutes.

check to see if you have fuel pressure after it dies. fuel pump could be getting hot and shutting off.

SOURCE: Car starts fine..Idle is fast...stalls after car warms up

Check for vacuum leaks. Also try cleaning the ISV.


If that doesnt work go to vwvortex.com and post your issue there

SOURCE: my 2002 hyundai accent 1.5

This sounds like an O2 sensor problem. These sensors regulate the oxygen into the engine, when they go bad, the engine can't breathe and therefore the car will not function right. If there is no oxygen, internal combustion can be a difficult task for a car. I would see if you could get those sensors replaced and you might be back in business. Good luck.