What to Do If the Door Limiter Still Squeaks After Applying Oil?
2 Answers
If the door limiter still squeaks after applying oil, you can spray some loosening agent. If the problem persists, it is advisable to go to a repair shop for inspection and maintenance. Below is some relevant information about car doors: Monolithic Door: The inner and outer panels are formed by stamping a single steel plate and then hemming. The initial mold investment for this production method is relatively high, but it can correspondingly reduce the need for related inspection tools and fixtures, though material utilization is lower. Split Door: Composed of a door frame assembly and inner and outer panel assemblies welded together. The door frame assembly can be produced by rolling, which is cost-effective and has higher productivity. The overall mold cost is relatively low, but the later inspection tools and fixture costs are higher, and the process reliability is poorer.
I used to frequently encounter squeaky door limiters even after greasing them, especially on older cars, mostly because the lubricant didn't penetrate properly or there was too much accumulated dust inside the limiter. You need to first open the door to its full extent, then use a fine brush or an old toothbrush dipped in gasoline or alcohol to thoroughly clean the limiter groove and metal ball joint. Wait for the dirt to dissolve, wipe it clean, and let it dry. Then, instead of using thin oil, switch to white lithium-based grease, apply it generously into the gaps to ensure even lubrication. If it still squeaks, the ball joint might be worn or deformed beyond what grease can fix. You'll need to remove it to see if adjusting the screw tightness helps; if not, you'll have to replace it with a new one. On my own car, it only became quiet after I replaced the limiter. Make it a habit to check and apply some grease monthly as a preventive measure—it can save you a lot of trouble.
