Sweet *****, What Have I Done? Thermostat Help P

[floridagal7643]

Well!, I finally did it. It only took me 2 months to screw up my new Corolla.

Specs:

1993 Corolla DX; 1.8 Liter Engine; Automatic Transmission

Background:

I was experiencing temperature gauge and high idle issues, so I came to the forum to find some answers. Sure enough, it looked like the problem was a thermostat that was stuck open. I picked up all the necessary parts -- toyota thermostat and gasket, anti-freeze, and torque wrench.

Problem:

When I was re-attaching the Thermostat Housing Cover I BROKE a bolt. Dammit! Long story short....I mis-read the 88 inch/pounds as 88 foot/pounds. Alla Peanut Butter Sandwiches, broken bolt.

Follow Up:

The housing has so far stayed in place with the remaining [bottom] bolt and the nub that used to be the other bolt. I have not seen any leaks either. Weird. The temperature gauge seems to be where it should ( about 1/3 the way up from cold); and the idle has chilled out a bit. But I can't let it rely on only one working bolt.

The Fix:

Please help. How can I remove the bolt???? I felt around what would be the back of the bolt and there appears to be an indentation. If I hammer on the nub that's sticking out, will it pop out the back, or is it welded in?? Or do I have to have it drilled out???

[jaxx]

you need to get it out

stud extractors are the best bet if you can get at it in such a way, requires popping a centre on the top of the duff bolt, running a drill trough its centre and then using the extractor. which is like a left handed tap, you have to work it into the then drilled hole and the teeth cut into it, eventually it will grip it enough and spin it out backwards

[floridagal7643]

Problem Solved!!!

I took the thermostat housing cover back off and managed to UNSCREW the STUD using a pair of pliers. I can't believe it was this easy. I got a replacement 6 mm BOLT from a kindly mechanic, and put that in place of the stud. Worked like a charm. Thanks for all your help; and just to recap....

1993 Toyota Corolla DX (1.8L)

Thermostat Housing Stud will unscrew from the block