Hi all

I was removing a throttle body from fiero gt 86 for my se 87 2.8. I had removed two tube of cooling liquid from this tb. Currently i don't have those tubes connected to my tb.

Is it dangerous for the tb?

Is that cooling liquid have a special fonction on tb?

Thks

Yann

No, it will not hurt your throttle body.

Its there to prevent moisture from freezing of throttle butterfly shut. And if your in Canada I'd leave those coolant lines in place.

Spoon


------------------
"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut

[This message has been edited by Spoon (edited 12-19-2014).]

It's actually a 'heating liquid' when it comes to the throttle body.......if you drive the car all year, you will need the tubes connected......If you live in Florida, you don't need them.

In Canada, you need them.
Without them to keep the throttle body warm, ice can form on the throttle plate and cause the throttle to stick open.

Thks all for that info

Yes I live in Canada but drives it only during summer.

In Western Canada we don't need them at all on the coast. Depends on how much freezing weather you drive in.

It's been discussed here before: freezing ambient temps aren't necessary for ice to form in the throttle body. The drop in pressure across the throttle plate decreases the incoming air's temperature and can cause the moisture in it to condense behind the plate, freeze, and lock your throttle partially open even though the outside air is several degrees above freezing. It's happened to me twice before on a non-Fiero. The right conditions don't happen very often as evidenced by the small number of people who've experienced it, but any post-accident investigation by either insurance or police will surely find the problem behind your sticking throttle. IMHO it simply isn't worth not installing them. You gain nothing by leaving them off.

quote Originally posted by Bloozberry: IMHO it simply isn't worth not installing them. You gain nothing by leaving them off.

Not true. You gain access to the distributor!

quote Originally posted by Patrick: Not true. You gain access to the distributor!

LOL... well ya got me there.

quote Originally posted by Bloozberry: It's been discussed here before: freezing ambient temps aren't necessary for ice to form in the throttle body. The drop in pressure across the throttle plate decreases the incoming air's temperature and can cause the moisture in it to condense behind the plate, freeze, and lock your throttle partially open even though the outside air is several degrees above freezing. It's happened to me twice before on a non-Fiero. The right conditions don't happen very often as evidenced by the small number of people who've experienced it, but any post-accident investigation by either insurance or police will surely find the problem behind your sticking throttle. IMHO it simply isn't worth not installing them. You gain nothing by leaving them off.

Yes... TB TBI and Carburetor icing can and does happen. And often w/o freezing weather.

Icing can cause throttle sticking, idle problem, etc.
If you stop and try to look, the engine heat will often melt frozen water in time to stop and open the hood.

Is why many TBI and Carb's have Thermac heater on air cleaner. W/o heat can freeze them at much higher air temp in high humidity. Many problem in the cool/cold weather because Thermac etc heater problem causing carb to freeze. Fix Thermac issues and the problem is gone. V6 coolant heat on TB is doing same job.
Example: I had old caravan in the Philly area that would freeze the carb in 40-50°F air in high humidity weather if the Thermac pipe is gone. It would die trying to slow down after driving 55 a few miles when thermac pipe is broken. No engine then no PS or PB. Fun. Not.

GM spend money to heat V6 TB should be a big clue... No car maker would spend money w/o very good reasons. Yet many will say is safe to remove the heat plumbing? They know More then GM designers? Not likely. They just parroting same myths on the internet.

Some area might be fine to remove heater pipes and thermac. Other places many will gamble if/when engine dies or throttle stuck open for icing problems. Many icing problems happen at the worse times and often give no warning at all.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)