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Ottawa Fiero Club Forum  |  General  |  Mods  |  Topic: bypass throttle body coolant « previous next »
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Author Topic: bypass throttle body coolant  (Read 3121 times)
JAYGT
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« on: February 09, 2004, 06:08:22 pm »

i have cut the coolant lines going to the throttle body. looks alot cleaner without them.   will the car idle properly without the coolant their?  some cars the coolant warms a sensor on the throttle body and turns off the high idle?  is this true with the fiero?  can i trick the sensor by switching the wires?  thanks in advance
jay Grin
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dguy
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Got vacuum. Want boost.


« Reply #1 on: February 10, 2004, 08:42:50 am »

To answer your questions in order of appearance...

Yes, don't know, no, no need.   Smiley

The throttle body preheat lines are there to keep the throttle body just warm enough to prevent icing (and the subsequent sticking) under certain operating conditions.

Many people have removed them without consequence, both in warm climates and in cool.  I removed mine last year, but my baby doesn't come out of hibernation until the Salter Brothers take their summer vacation.  In other words, I have no worries about icing up the throttle body in the climates I drive in.

YMMV however.
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1984: Track car project.
1985 SE: Dead 2.8, stalled L67 swap.
JAYGT
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« Reply #2 on: February 10, 2004, 08:03:56 pm »

thank you.  everyone should do this mod. Grin
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hellfish87gt
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« Reply #3 on: February 23, 2004, 07:51:10 pm »

i did it last year wiht no ill effects, it really does clean up the upper plenum area.
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GoFast85
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« Reply #4 on: February 24, 2004, 07:45:33 am »

I have experience throttle body icing in another engine type and it was no fun the revs drop real low. You either have to stop the engine to let it heat up or pull the manual choke to knock the ice loose. Back to the performance or looks question.  
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dguy
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Got vacuum. Want boost.


« Reply #5 on: February 24, 2004, 07:51:26 am »

I have experience throttle body icing in another engine type and it was no fun the revs drop real low. You either have to stop the engine to let it heat up or pull the manual choke to knock the ice loose. Back to the performance or looks question.  

I removed them from my car strictly for performance.  I was mucking about with EGR tube leaks at the time, and as I suspected my hands perform better on that area of the motor when the preheat lines are absent.  Grin
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1984: Track car project.
1985 SE: Dead 2.8, stalled L67 swap.
BootMachine
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« Reply #6 on: February 26, 2004, 01:42:12 pm »

I removed these lines from my throttle body on my A20A4 engine and I found in the winter, frost forms at the base of the throttle body preventing the butteryfly valve from closing 100%!

here is a pic of what my throttle body looks like



The coolant lines are at the bottom!
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