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Hyundai Repair

Repair and maintenance information for Hyundai vehicles

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Hyundai Repair Information

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Check if the fuel pump is working. If it isn't, the fuse and relay must be replaced. Also, make sure that the fuel pressure is 43 PSI. You may opt to replace the fuel filter so that fuel flows regularly and freely. Check the fuel lines as well.

Transmission Control Module Failure

To ensure that shifting won't be erratic, you have to replace the transmission control module or TCM. First, make sure that the ignition switch is turned off. Then remove the screws and washers that secure the TCM. Clean the sealant from the module and its cover. Disengage any connectors from the TCM and remove the defective part. Install the new transmission control module and connect the harness connectors. Finally, reinstall the screws and washers to secure the new TCM.

Engine Misfire

Using a wrench, remove the faulty part from the exhaust system. Then install the new oxygen sensor and reinstall the electrical connections. To keep engine misfire from happening again, regularly check the condition of the oxygen sensor every 80,000 to 100,000 miles.

Blown Head Gasket

Let the engine cool to room temperature before removing the faulty head gasket. Clean the cylinder block head bolt holes and make sure it is free from dirt, oil, and fluid before installing new head gasket and head bolts. Using a torque angle gauge, initially stretch the head bolt to 26 ft.-lbs. and 75 degrees. Then loosen the bolts to relax the gasket and repeat the procedure for the final torque value. Once the head gasket is securely fastened, warm the engine to full operating temperature and check for any oil or coolant leak. To avoid future problems in the head gasket, opt for preventive maintenance like cleaning it properly. Remember that you must be careful when cleaning the head gasket since it is made of aluminum.

You must avoid gouging or scratching the gasket's surface. You can easily remove the head gasket by applying a chemical gasket remover and scraping old gasket material using a razor scraper or a hard plastic putty knife. Never clean aluminum gasket surfaces with rotary abrasives or wire wheels because they can gouge the surface and contaminate the engine with wire filaments. Proper inspection can also prevent future head gasket damage. Use a straight edge and feeler gauge to test the cylinder head and engine block for straightness. As a rule of thumb, the cylinder head should not show more than 0.001 inch in length and 0.002 inch in width warping per cylinder. Also, the head gasket must look polished and smooth. Remember that if the surface of the aluminum cylinder head is rough, the life of the cylinder head gasket becomes shorter.

Clamp wear

Clamps that hold the cables can wear overtime because of the extreme temperature under the hood. To avoid wires and cables from becoming loose and damaged, clamps must be replaced immediately. Another economical option is replacing the clamp with plastic cable ties. That way, the cables will be in good condition for a longer time.


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