I was replacing my tps sensor, got the top screw out, went to do the bottom and the head of the screw just snapped off. The tps came off but now I have the threaded part of the screw (with some sticking out) stuck in the throttle body....

what can I do about this?

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Do you have a pair of needle nose vise grips ? Just a thought if there is enought to get ahold of with vise grips.

I don't have those but Im sure I could find a pair... hopefully the rest of it doesn't snap.... I couldn't believe how brittle it was...

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The body of the TB is Alum. and the screws like to sieze so you want to soak the threads with PD or WD before you try to remove it. I'd even put a little heat on the part of the screw left (not the TB itself) and then use a pair of vise-grips to break it loose. Don't just try to screw it out but work it back and forth a small amount to see if it starts to move. When it does put on more WD before you start to remove it and work slowly.

[This message has been edited by Dodgerunner (edited 05-31-2007).]

thats about your only option here..if that doesnt work then youl have to drill it out...use a reverse drill bit..then easy out..

Google is a fiero owners friend ;-) http://www.bhi.co.uk/hints/screws.htm

Hope it helps ;-)
Tommy

Spray some PB blaster or some kind of penetrating oil on the bolt, then take a small hammer and tap on the end of the bolt a few times. Then try to remove it with a pair of vise grips.

Same thing happened to me, I had to remove the whole TBI and take out what was left with needle nose pliers. Buy a new TBI base gasket, and now would be a good time to replace the fuel filter if you haven't recently, and check the vacuum lines.

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1984 Fiero SE

Thanks for the tips guys! I'll soak it over night and see what I have in terms of needle nose pliers etc. tomorrow... It just chaps my a$$ when this kind of thing happens... I just had my decklid and spoiler repainted and I really want to get out there and show it off but now its stuck in the garage again haha

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God's way of telling you that you must install a Darrell Morse bored out throttle body, do it now, baby jesus is crying!

HAHA

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Former West Coast Fiero Employee

New and Pre-Owned Auto Sales Consultant
Power Ford Valencia

quote Originally posted by Chicken McNizzle: God's way of telling you that you must install a Darrell Morse bored out throttle body, do it now, baby jesus is crying! HAHA

hahaha, I have two spare tb's here but none are bored out. I'm thinking dual throttle body intake mwuahah

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Very common problem. Usually TPS comes with new screws, use them, coated with anti seize. The one stuck in there should come out with vice grips, mine did. Otherwise you need to take a dremel and grind the end smooth, center punch the end of the broken screw and drill it out.

You think thats hard, wait till you try and take the exhaust manifolds off.........

The exhaust manifolds are next... luckily they were out not too long ago, so I'm hoping they're not seized and stuck

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quote Originally posted by rogergarrison: [...] You think thats hard, wait till you try and take the exhaust manifolds off.........

Or it could be like the ones I just took off my old engine for Chris, where the bolts were basically finger tight. I'm surprised that engine never had an exhaust leak.

The vice grips work.... its turning the rest of the screw, but its not coming out. Something is wrong with the threads... now what?

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soak it. heat it. soak it. heat it. tap it with hammer. turn towards tightening. DONT BREAK whats left of it. drill it. replace TB.

also - the shoddy approach - but it WILL work just fine: ignore it. put the new TPS on, and put a dab of epoxy on it. it carries no load.

I'm temporarily taking the shoddy approach. Whats left of the screw is holding the bottom in place, I put a nice new screw in the top. It doesn't rotate or move as the throttle is applied. It will have to do for the time being because I want to drive the car.

I plan on replacing the throttle body and upper intake manifold anyways.

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If you don't have another one talk to Chris at WCF, theres ALWAYS at least 5 spare anything off of a Fiero at the shop.

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Former West Coast Fiero Employee

New and Pre-Owned Auto Sales Consultant
Power Ford Valencia