Skip to main content

Questions tagged [throttle]

Questions and discussions about a throttle. The throttle is a valve that controls the amount of air that is allowed to pass into a gasoline engine (diesel engines do not have a throttle in this sense).

Filter by
Sorted by
Tagged with
0 votes
0 answers
20 views

2014 Toyota tacoma has no throttle after jump start

My truck died I jumped it and got it started again now the check engine light and the TRAC off light are on and I have no throttle. It starts and rolls but when I push on the pedal there's nothing. I ...
Twisted Tenor's user avatar
4 votes
1 answer
122 views

Bmw e43 320d revving itself to verry high rpm

I have a big problem whit my 2.0 Bmw e46 320d. The problem is that I was driveing one night and the car gust started revving by itself around 7k rpm the car had so much boost at the time that I almost ...
ioanBB's user avatar
  • 41
1 vote
1 answer
17 views

2007 Dodge 2500 dying at low speeds / TBI codes

Getting PO122 code - replaced throttle body assembly 3 months ago, so don't believe it is that. Saw something that accelerator pedal could be part of problem, and was able to capture this graph using ...
Matt's user avatar
  • 11
2 votes
0 answers
45 views

New 2.5 hp outboard motor has reduced power at full throttle

I have a new 2.5 hp 4-stroke Mercury outboard motor on a 12-foot aluminum boat: I've used the motor four times; 15 km per trip. When I first got the motor, it seemed to have a lot more power at full ...
User1974's user avatar
  • 1,087
1 vote
1 answer
274 views

What does a throttle valve actuator do in carburetors?

i tried looking online but could not find much information about throttle valve actuators in carburetors. I think they look like this part in the picture below circled in red. What is the purpose of ...
Timothy Scherer's user avatar
1 vote
0 answers
51 views

What is my mechanic doing when he says he tunes the engine on the annual service?

Whenever I take my motorcycle (MT-07/FZ-07) to the mechanic for the annual service the mechanic says he "tunes" the engine. I do feel a difference, especially a much smoother throttle ...
joaoa's user avatar
  • 11
0 votes
0 answers
98 views

Coleman mini bike ct200u

My bike just takes off on its own. When I turn the choker on. Not sure what it wrong with it. It’s just take off on it’s own
Stephanie Ayala's user avatar
0 votes
2 answers
4k views

Ideal TPS Voltage Range for calibration

Some manufacturers state an ideal range for throttle position sensor which is helpful if you want to calibrate a new sensor or re-calibrate the old one. For instance, they say 0.5 V for idle and 4.5 V ...
LFY MP7.3's user avatar
  • 946
1 vote
0 answers
79 views

Coleman CT200u problems after upgrades

I recently installed a ARC billet rod, dyno cam, new flywheel, new valve springs. After installing all of it, now when i start the bike, it sounds and runs fine with the choke on, as soon as I take ...
Jack Loring's user avatar
15 votes
1 answer
5k views

How come full throttle is meaning full speed instead of the opposite?

I am stumbling about full throttle. To throttle usually means to brake down or slowing down. Technically it is a flap which is reducing the air delivery which is important for the combustion process. ...
Thomas's user avatar
  • 253
1 vote
0 answers
319 views

32/36 Weber carb MGB dies when accelerating but when the progressive second butterfly throttle valve opens it revs fine at high rpm

i have a 1977 MGB with a 2 barrel progressive throttle 32/36 Weber carb. it will idle, but if i try moving at low rpm, the engine will jolt on and off. like if i was pressing the gas but rapidly ...
Tony's user avatar
  • 11
1 vote
1 answer
1k views

Rough idle and stop when I first start the engine in the morning

I have 2005' Legacy 2.0 4AT. Problem 1 As I mentioned in the subject. When I first start to the engine it's quickly working but somehow if I try to change gear to D it stops (sometimes it's not but ...
Semih Aydogan's user avatar
1 vote
1 answer
5k views

Is it normal to have a slightly open throttle-plate?

Recently I had experienced a Check Engine on 2012 VolksWagen Passat, and the error code was P0106. After quick research I found that I can replace the Map Sensor as well as the PCV Valve. Both ...
KingsInnerSoul's user avatar
0 votes
2 answers
82 views

Kawasaki Eliminator Throttle Cable Discontinued - Ideas?

The throttle cable (open) of my Kawasaki Eliminator ZL 600 (B3) 1997 is torn. Spare part number: 540121490. It looks like this part has been discontinued. I cannot find any used parts online either. ...
Tib's user avatar
  • 123
0 votes
0 answers
75 views

IDLE Problem issue, and Throttle Body Specifications Honda Civic LX 1998

Where can I find the throttle body specifications for a Honda Civic Lx 1998, I am searching and I get different results? It is producing an issue in accelerating, and tachometer the dial keeps going ...
EnlightenedFunky's user avatar
0 votes
0 answers
33 views

Jumpy/laggy Throttle

Hello I have an issue with my throttle response in 1st and 2nd gear until around 2500rpm,I accelerate and a constant rate and is sluggish until 2500rpm then it jolts the power/ response back to normal ...
Ericg's user avatar
  • 1
1 vote
1 answer
82 views

How to use ODB data to detect throttle related emission problem?

Based on OBD II Standard PIDs PID(hex) 11 Throttle Position value from 0~100% How could we use this data to predict if there is going to be a problem? https://en.wikipedia.org/wiki/OBD-II_PIDs
Sean's user avatar
  • 21
0 votes
1 answer
474 views

How can I extend my throttle cable by ~1"

The bracket that my right mirror screwed into broke off right near where it was welded to the handlebar, and I couldn't fix it so I just put a new mirror mount bracket to the right of it and moved my ...
user avatar
1 vote
0 answers
99 views

I have a seemingly very hard wiring problem to solve

Further to my last question : I have a Renault Clio 1.2 2010 that keeps coming up with a P0638 (Throttle Actuator Control Range/Performance) error (according the the OBD2 device I have). One thing I ...
Mongus Pong's user avatar
0 votes
0 answers
138 views

Does a puddle of Seafoam cleaner indicate a vacuum leak?

Engine is "skipping", cutting out or what seems like a misfire (?) every once and a while. (Even more so when the AC is on). To start, did the SeaFoam throttle body cleaner, as shown here: How ...
Greg McNulty's user avatar
1 vote
0 answers
178 views

P0101 and P2113 codes removal Kia Rio 2011

I have a KIA Rio Diesel car from 2011. With a diagnostic tool I have read the P0101 and P2113 DTC's: I had an old and problematic throttle body. I have replaced it with a completely new one and took ...
Łukasz Przeniosło's user avatar
0 votes
0 answers
67 views

Coleman ct200u ex running

I just put a stage 1 performabce air intake kit, carb that's meant for it, and it doesn't properly run. It starts fine and everything was put on correctly. After half a second of trying to give it gas ...
Jeremy Harris's user avatar
0 votes
0 answers
240 views

My royal Enfield classic 350 is not accelerating upto full throttle

My royal Enfield classic 350 is not accelerating upto full throttle..... As we give acceleration in every gear it's acceleration is going till half throttle... From there it's not accelerating and ...
Hârshâ Vârdhâñ's user avatar
1 vote
1 answer
927 views

Honda CRV 2000 Horrible Throttle Response

Problem I have a 2000 Honda CRV with automatic transmission that has absolutely no throttle response at the low end, especially under load (meaning accelerating especially from standing). It's not so ...
Allan's user avatar
  • 187
0 votes
0 answers
70 views

Why is the engine sputtering even when there is sufficient fuel?

While kickstarting the motorcycle, the engine starts properly. But after travelling some distance, the engine sputters and turns off even when there is sufficient fuel. Then, after few raises to the ...
Vijay MaximOff's user avatar
0 votes
0 answers
10k views

If I don't have throttle body cleaner, what can I safely use as an alternative?

Pretty much as the title states, I need to clean my throttle body, but I don't have any 'throttle body cleaner'. Are there any other common solvents I could use instead, that would be both effective ...
user avatar
1 vote
1 answer
285 views

Need help to fix code P2138 on a 2007 ES Lancer

This is a 2007 Mistubishi Lancer ES with a P2138 code. I have replaced the pedal sensor and a complete new throttle body and after clearing the code my engine light eventually comes back on and I ...
matthew wilson's user avatar
1 vote
0 answers
292 views

Throttle Body is not close/open smooth?

i have hesitate RPM . today i check my Throttle Body and i think is not close/open smooth. its feel lag when pressing pedal slowly. or its okay? what you think? Visit https://www.youtube.com/watch?v=...
Mostafa's user avatar
  • 55
1 vote
3 answers
132 views

How to remove this tightener?

This is alfa romeo giulietta, in front of the throttle body.
luntain's user avatar
  • 221
1 vote
1 answer
75 views

Ranger putting oil inside the exhaust

My Ranger 2.2 Diesel 2013 model puts oil inside the exhaust and therefore discharges excessive smokes from the exhaust.
Ally Rams's user avatar
1 vote
0 answers
56 views

My 2010 Jaguar XK will very occasionally struggle to accelerate only when starting from low speed

new to the forum! My 2010 Jaguar XK will very occasionally struggle to accelerate when I am running it at low speeds of about 10-15 mph. When I try to go above 10-15 mph, the car will create a lot of ...
Jon Yang's user avatar
2 votes
1 answer
878 views

2014 Ninja 300 idle/throttle issue

Back Story Recently my bike had an issue twice while riding that the throttle seemed like it was sticking. I'd be accelerating and when I let off the throttle, it would continue to accelerate. It ...
kyle_engineer's user avatar
2 votes
0 answers
87 views

2000 Sierra 1500 4.8L Engine not revving properly for several minutes after start

For the past couple weeks I've been consistently having a weird issue with my 2000 Sierra 1500 4.8L when I first start it up. The engine will start and idle fine, but when I give it gas the engine ...
Matt's user avatar
  • 21
2 votes
0 answers
20 views

06 Jeep Cherokee 8cyl; Auto transmission

It seems that I am annually having to replace the “map sensor” and various parts associated with that. Last week I replaced it again, and next will be the “auto throttle body” or something with the ...
Nancy Parrott's user avatar
1 vote
5 answers
11k views

Gas pedal floored yet the car can't reach maximum speed

I'm running a manual Opel Corsa 2005 Sedan (engine code: C16SE, 1600cc). The problem I'm encountering is that the car won't reach its maximum speed of 200km/h as similar cars do. Instead, it stops ...
Ahmed salah's user avatar
2 votes
1 answer
200 views

1997 Pontiac Sunfire not accelerating past 40mph

Problem Details: My 1997 Pontiac Sunfire will turn on but I need to leave it cranking for a bit and give it a little gas, it can run, but when I try to accelerate past 40mph, the revolutions drop ...
Christian Velez's user avatar
1 vote
1 answer
4k views

Why do we need coolant in throttle valve body inlet in Opel Astra H?

Opel Astra H has an electric driven throttle valve. As I know, coolant in throttle valve body would control bimetal plate responsible for warming up. Why can't it control warm up process based on ...
Yevgeniy Afanasyev's user avatar
0 votes
5 answers
909 views

Full throttle and braking

I plan to implement a cruise control system on my old car using an arduino, using info from the speed sensor it will control the gas pedal etc.. I know I known, safety first.. I will be doing a lot ...
mont_'s user avatar
  • 113
2 votes
1 answer
188 views

Unknown Capacitor required

I have an automotive electrical issue I am having trouble with, the injection ECU is reacting to the throttle position sensor too quickly and shutting the fuel off on a trailing throttle too early ...
Deanxm1's user avatar
  • 23
0 votes
0 answers
82 views

02 Honda Odyssey transmission revs up or doesn't engage at 25 when off gas and up-shifting [duplicate]

my 02 Honda Odyssey transmission revs up or doesn't engage at 25 when off gas and up-shifting. Here is what happens in steps: accelerate to 25 in second gear off gas and upshift to third immediately ...
Dan Z's user avatar
  • 299
0 votes
1 answer
555 views

Vehicle alternator voltage/current output's relation with throttle / engine load

I was diagnosing my alternator to find out if it is working properly. It seems like it is doing its job well. Anyway, interesting thing I found out was that the average voltage output from alternator ...
Pudi's user avatar
  • 55
1 vote
0 answers
103 views

Ford fusion throttle body?

I have a manual-transmission 2008 Ford Fusion SE. It's a great car but I have been having some problems with it recently. Firstly, the throttle does not seem to close when I let off the gas pedal. If ...
Daniel's user avatar
  • 11
4 votes
1 answer
400 views

Replaced throttle body - now horn won't stop honking

This is the final question to my DIY ford ranger repair series. You can see the first two here: 1) Is hot desert weather the source of my recurring car problem 2) Procedure for throttle body and idle ...
Z W's user avatar
  • 225
5 votes
2 answers
4k views

How can I rev a "drive by wire" car from under the hood?

I've got a 2013 Hyundai Accent with a noise coming from somewhere under the hood. Happens only at a fairly narrow band of engine speed (1100-1200 RPM). I've been trying to hunt around for the source, ...
smitelli's user avatar
  • 574
1 vote
2 answers
742 views

p0123 - replaced TPS but still dies while driving

My brother has a '96 Plymouth Voyager. He drove it to my place the other day and on his way home it died within a couple of miles. The check engine light was on so I pulled the codes and am getting a ...
rviertel's user avatar
  • 1,169
1 vote
0 answers
571 views

2 Stroke 70CC Scooter Engine

I own a scooter which I blew the engine in Dec 2016. I since replaced the defective parts in it and it now runs great aside of one thing: Bottom end of the throttle is slugish (I'll elaborate) It ...
Samuel Goulet TechnoSam's user avatar
1 vote
2 answers
923 views

Why is the throttle on my motorcycle jumpy?

The bike is a 1991 Honda Nighthawk with just over 180,000 miles on it. It is around 230ccs, and has a carburetor. This is my first bike, so I don't have any idea what is typical behavior for a ...
MasterArcanist's user avatar
0 votes
1 answer
7k views

Engine halts when turning on AC

I have Wagon R (Maruti Suzuki) 2011 model with Petrol and CNG. Whenever I turn on the AC, engine stops. What could be the possible reason for this? This is happening in both cases: Idling as well as ...
Anurag Rana's user avatar
1 vote
0 answers
926 views

350z limp mode and low oil

My 350z went into limp mode while I was highway driving, and the check engine light came on. I noticed that the oil was nearly nonexistent, and added oil. The car still wouldn't get out of limp mode. ...
Nate's user avatar
  • 11
0 votes
2 answers
552 views

Why Tachometer shows idle RPM range instantly when closing the throttle and clutching

I have studied that, RPM is the measure of how fast the Crank Shaft is rotating. Lets consider the following case. You are riding in some speed which shows the engine at 5000 RPM. Now you are ...
NANDAKUMAR THANGAVELU's user avatar