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1990 VW Cabriolet Thermostat ?
To start with I live in Maine, I own a 21 year old VW Cabriolet. I have replaced about $5000 in parts in the last 4 years. My problem continues to be that the thing overheats after 10 - 15 mins of driving. Now, it has a new water pump, thermostat and housing. However in trying to change the thermostat which I believe to be the issue, I stripped one of two bolts. The housing it attaches to is metal and the two parts on top of it I can't get out to replace the housing because of the fact it's SO rusty none of the bolts to get the top parts out will turn, so even though I have a new housing I can't get it in. I gave up on the water pump housing idea after that and rethought the situation. The problem is my thermostat. I have permatex high temp silicone sealant and one bolt will work. If I seal it with that, let cure and use the one bolt will it hold up? Or will the pressure be too much and screw my whole car trying this? Any advice would be lovely, thank you! Check it out on cardomain here : http://www.cardomain.com/ride/3931517/1990-volkswa...
2 Answers
- 10 years agoFavorite Answer
Try using an E-Z out (device made for removing bolts that are broken or stripped). Another thing you can do if the bolt is big enough is to drill a hole in the center of the broken bolt. Use a tap to tap left handed threads in the center of the bolt. Then as you tighten a left handed thread bolt into the stripped bolt you might be able to back it out. Use something like WD-40 or PB blaster to help loosen the rust first. 3rd alternative is to drill the entire broken bolt out and re-tap with a larger size thread and you will need to use a different size bolt. Not sure if the 3rd option will work for you or not since I don't know how much material you have to work with. You could also use JB weld to attach the housing but you will probably never get it off again. Your idea is worth a try but even if it holds for a while, eventually it wold probably give way. And it will always give way at the most inconvenient time.
- norskiLv 410 years ago
Your repair must be able to withstand multiple heat and temperature changes and the expansion and contraction that occurs during operation. You would be better off to try and find a mechanic who can fix it properly. A patch -up job could ultimately get you a ruined engine.
Source(s): Retired shop owner.
