Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [throttle-body]

31 questions
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Yamaha R1 intake tract configuration

Interesting Configuration The Yamaha R1 has a very strange intake design. Notice the intake horns in the image below. They sit above the throttle bodies and are not attached directly to them leaving an air gap between the throttle bodies and these…
DucatiKiller
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Idle gets stuck at 2000RPM

I have a friend with a 1989 Toyota Camry Wagon and the idle occasionally gets stuck at 2000RPM. In order to get the idle unstuck, we have to press down the gas, kick up the revs and then it will settle back down to a normal idle around 1000RPM. I…
Elliot B.
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8
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ITBs with a charged engine

Are there any benefits of running independent throttle bodies with a super/turbocharged engine, as opposed to running a single throttle body on the same engine? If so, what are the benefits (and how extreme are they)? Static characteristics of…
James Monger
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How much oversize should you target when choosing a throttlebody?

This is in addition to my previous question about throttle bodies. I know it may sound a bit subjective, but I think it has a clear technical aspect, and I have done a considerable amount of homework. To elaborate; I'm looking for a throttle body to…
Bart
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Are there any throttlebodies known to fit as replacement for SU carbs?

I'm planning to build injection in an engine that originally uses two SU HS6 carbs. At first i planned to use the carbs themself as throttle bodies, but they're rather worn out, and they don't have throttle position sensors on them. Considering the…
Bart
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What is the effect of the throttle body on the power curve produced by the engine?

I heard from another member of this community that the throttle body, among other things, has the ability to change the power curve of the engine. What exactly is a throttle body? How might the throttle body effect the power curve of the engine?
Max Goodridge
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Plastic throttle body to plastic intake manifold bolts

Throttle body and intake manifold are both made of plastic in my car. Every few years, I remove throttle body to clean Idle Air Control Valve passageway because it is inaccessible without removing the throttle body. My throttle body is attached to…
LFY MP7.3
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Can hooking up jumper cables incorrectly cause one to have to replace the throttle body?

Can hooking up jumper cables incorrectly cause one to have to replace the throttlebody? I own a 2007 Toyota Camry XLe (6-cylinder) and accidentally hooked battery cables up to the wrong post. The car then, after fixing cables, started right up but…
Clifford Mullett
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Sportbike Throttle Body Out of Sync

I recently purchased a 2017 R6. At around ~450 miles I had the 600 mile maintenance done early because I noticed my bike wasn't shifting as smoothly and the engine wasn't running as smoothly (running junk). In that maintenance I had the oil…
Mocking
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Procedure for throttle body and idle air control replacement (ford ranger)

I'll be replacing the throttle body in my 2004 Ford Ranger (engine v6 3.0L vin-U, mileage ~ 130000) as the result of my previous post (see here Is hot desert weather the source of my recurring car problem?) I was quoted $900 for the total cost. MSRP…
Z W
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Can hooking up battery cables incorrectly ruin the throttle body in a 2007 Toyota XLE V6

Can hooking up jumper cables incorrectly on a 2007 Toyota Camry XLe V6 affect the throttle body? After I did my car would not go over 25 mph. My mechanic put it on the tester for the code and told me that it would need a throttlebody. It didn't…
Clifford Mullett
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Why might you choose to change to using an aftermarket throttle body?

I have heard that some people might want to buy an aftermarket throttle body. Is the reason for this simply to replace a broken one or are there also other specific advantages (and disadvantages) to them?
Max Goodridge
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Excess fuel consumption at idle

Below are the Engine parameters at idle: Engine load-calculated value: 70.2% Mass air flow: 6.95g/s Intake manifold absolute pressure: 62kPa Intake air temperature: 36°C Engine coolant temperature: 90 °C Engine speed: 1337.5rpm Vehicle speed: 0…
Ronnie Ggita
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Toyota Matrix 2010 1.8L in limp mode. No throttle response. Error code P2118

Error code P2118. Intermittent no throttle response, sometimes it works fine, sometimes it goes into limp mode. The first incompetent shop replaced the gas pedal assembly, twice, then another shop said the electronic throttle body was bad. I…
Teed
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What are the factors that rev hang depend on? Does rev hand depend on the engine load?

I know that rev hangs are intentionally introduced to modern vehicles that operate on electronic throttle bodies, by programming the ecu to close the throttle valve slowly (in gasoline engines) even when you let go off the accelerator pedal quickly…
Heatgunner
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