2004 Toyota Corolla Problems
RepairPal has identified the most common problems with the 2004 Toyota Corolla based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
A squeak or groan noise may be noted from the front or rear suspension. Spraying a light lubricant on the suspension bushings 1-2 times per year may help eliminate the problem.
The timing chain tensioner is designed to use oil pressure to keep tension on the timing chain. When it develops a leak, it can no longer provide tension, and the timing chain will begin to make a slapping or rattling sound at all times.
If left in this condition, the timing chain may fail, leading to costly internal engine repair.
To correct this issue the timing chain tensioner must be replaced with the revised part.
The window regulator in the 2003 and 2004 Toyota Corolla were assembled using defective bolts that allow the window to fall off track during normal operation. The bolts stretch, loosen, and break, allowing the window glass to move freely inside the door, independent of the regulator.
The solution is to either replace the electric window regulator, or just the bolts, depending on the amount of damage done to the regulator.
The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperature sensor it will trigger a Check Engine Light for improper EGR flow. The repair is to clean out the EGR passages and the EGR Temperature sensor. Our technicians tell this repair is pretty straight forward and takes about 1-1.5 hours. It is also wise to verify the EGR system components i.e. the Transducer, EGR Valve and VSV Solenoid at this time.
The bolts attaching the front door window glass to the window regulator may come loose. This can cause the window regulator to become damaged and possibly causing the window glass to break. Some 2003 & 2004 models have been recalled for the issue.