Re: How replace rear spoiler?
I think the problem is that the spoiler is just taller than the average height garage door. I caught mine on the door and ripped it off. I tried getting a plastic welder (harbor freight #96712) but that did not work, because the abs (it's stamped on the spoiler itself that it is abs) shrank back before getting hot enough to turn into a liquid. It was also very spongy while hot. Then I remembered that black drain pipe is abs. I went to home depot and got some pvc primer (it works on abs too) and some abs glue for a grand total of $8.44. You need to make sure you match up each screw and broken piece of abs with the right indent before using primer or glue. You should orient the broken piece so you know which way it goes because you will not be able to see once the glue is applied. You need to seperate the broken piece of abs from the screw. The is also a spongy adhesive washer that you need to seperate from the abs. Then apply the primer to the screw indent in the spoiler as well as to the broken piece of abs. Then you put the screw into the indent. This reqires some force (not a lot) because the abs shrank as it cooled when it was first made, but the screw didn't. Look at the screw from the top front and side to make sure it is pointing puppendicular to the spoiler. Once this is done, you put the abs glue around the screw. Then you push the broken piece of abs onto the screw in the right indent, oriented the right way. You will need to push it into place and if you do not want black fingertips for a couple days, latex style gloves will be a big help. Make sure the broken piece is flush with the underside of the spoiler. Abs glue will harden in a matter of minutes, but I recommend you adhere to the directions which say to wait 24 hours. Abs glue is a solvent type glue which "melts" the glued pieces together into one piece which should be as stong as it was originally if there are not large gaps (as in from putting the wrong piece into the worng indent). Once it hardens it should be as good as new. The factory puts a spongy washer or silicone around the screw before installing the spoiler and I would recommend doing the same. The spongy washer you removed from the abs may be reusable, or pretty much any kind of silicone will work. Do not use a lot since the silicone is not an adhesive in this case, it is to prevent squeeking while driving. Reinstalling the spoiler should be the reverse of removal. You may need to use a wire hanger to pull the brake light connector through the tunnel in the spoiler. Once done this should save you about $400 for the part. And the dealer I went to wanted to charge $275 for labor as well.
I will update here if anything goes wrong after I reinstall the spoiler, but I don't anticipate it.