Throttle body problems

Throttle body: Device that regulates the air intake into the engine. It is mainly controlled by the accelerator.
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Throttle body problem

Ford F-150 2021 5.0 84000 miles
My throttle cuts off air at about 3500-4000 rpm I’ve tried to reset the throttle sensor ,I’ve disconnected the battery for 30 minutes to reset the battery I have no check engine light ,this problem causes me to have a high idle when I first turn on the car.
Black f150 from United States a year ago  
BL

It's very sluggish SolvedSolved

Ford F-150 2000  200000 miles
It rattles and it's very sluggish, as if something was missing. I changed the oil filter, spark plugs, cleaned the throttle body and it's still the same. The spark plugs I used are normal cheap ones, not platinum, and I calibrated them to 0.52, now it starts quickly, before it took a while. What can I do so it recovers acceleration and feels quick again?
indie from United States 11 years ago  
IN
1 report 
Solved
Best answer (according to indie)
Raymond from United States 11 years ago
You have to check the gas pressure in the fuel rail, this is very delicate and with a few pounds everything is already off. I had that problem with a King Ranch that didn't go over 70, I changed the fuel pump and that was it.
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Wrench light

Ford F-150 2005 5.4 V8 triton xlt 114000 miles
This light came on then my truck started driving really rough. It would sort of "jerk" forward when I took my foot off the peddle. Drove it 2 hours home like this but since then it as been fine (only been 4 days). Wondering whats wrong, read online that its probably the throttle body.
killingham21 from United States 10 years ago  
KI
7 reports 
fo150 from Canada 10 years ago
Had same problem on 2001 f150 5.4. Take a look forcooked wired behind right side engine head just above o2 sensor. Check trans wire harness passes over the trans real close to exhaust check for trans oil in plug on trans. Pull codes from truck check for p1747 or similar short to ground. Wires might be cooked close to back of engine head or oil in plug o ring failure easy fix if harness might have to unplug trans wires and for slack good luck PS check engine bay fuse23 if blown
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06 f150 throttle dieing issue

Ford F-150 2006  200002 miles
I drive around at least 2 hrs or more and 06 f150 you go to mash pedal down to pull out or to go up hill or to pass and truck just shuts off no power anything no lights nothing. I've replaced throttle body, fuel pump control mod. Up by spare tire. Ive replaced fuel filter. Thermostat, air filter , sill have this issue I really would like to drive my truck again. What else should I fix.
Nate from United States 3 years ago  
NA
9 reports 
D-MECH from United States 3 years ago
The pcm fuse in the interior fuse box on the driver side is blown. It happens when the fuel module goes out or has a bad ground. The wire harness for the pcm runs through the frame of the truck. I went through 3 pcm and probably 20 fuses trying to figure why I had this issue. There is an exposed wire running from the wire harness touching the frame. Good luck
Fordslostbolt from United States 3 years ago
Id start by changing complete fuse box. The whole box! I had almost identical issue almost 2 yrs ago, never could figure it out. Had a rare day off work and a bit of tinker brain wanting to tinker and had looked at everything imaginable. So i daid to hell with it i puuld the box and took it apart, completely! I seperated the circuit boards and foun a blown trace. Completeley seperated trace, finger,run or whatecer you wish to call it. It was completely seperated like a ¼in gap seperation. Snatched a box from junkyard hokked it up and been gettinit ever since
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Gives wrench sign and goes into limp mode SolvedSolved

Ford F-150 2014 F150 3.5l 190000 miles
Driving around and then it goes into limp mode and shows the wrench symbol, no other codes the one I know of from the fuel pump sensor because the gas gauge works when it wants to, turn it off and start it up again after about a minute and runs fine, it’s happened before a few times but hasn’t happened for a while until now, I’ve cleaned the throttle body and mass flow sensor and it still happens
Rainman from United States 2 years ago  
RA
2 reports 
Solved
Best answer (according to Rainman)
Rainman from United States 2 years ago
It was the throttle body 🤦‍♂️😂
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Ruff idle cuts out while driving loss of acceleration

Ford F-150 2005 Extended cab 4.6 stx 321500 miles
Check engine light was on so had auto zone run a scan on it. And at that time my truck would barley creep down the road. Well holy crap a ton of codes parked it till was able to slowly work on it. First changed all spark plugs helped a little then all 8 coil packs. New throttle body new EGR valve. Got a little better new fuel filter. Still ruff idle and cutting out on exceleration. Used smoke machine to check vacuum leaks didn't see any smoke. Checked vacuum line from brake booster that hooks to back of intake seems intact. Brake light stays on mostly sometimes flashes on and off. I'm at a loss help me figure this out. Plz
Stranded redneck gal from United States 3 years ago  
ST
3 reports 
Putitinyajaw77 from United States 3 years ago
Same problem,,,,help,,,I'm not gonna put a ton of money into this,,,any feedback would be greatly appreciated
Stranded redneck gal from United States 3 years ago
Well I guess nobody has a clue. I have changed the throttle body w new solenoid. EGR valve mass air flow sensor spark plugs coil packs I even made my own small key machine to check for vacuum leaks. Nothing I cleaned fuel filter and o two sensors. It has around 40 psi for fuel pressure. Help this country girl is tired of being broke down guess I'm gonna round up a old nag of a mule to ride to town and back. Saves gas... sorta
Backwoods G from United States 3 years ago
Check your duct work before the mass air flow sensor. Look for any hole or crack that could suck air. If it sucks air and begins to swirl inside of that duct work it will make it run rough. I’ve got a 99 F150 that had same issues i cleaned my mass air flow sensor, on underside of duct there was a rubber grommet that wires run through that had come loose, and a 1/4 inch gap where plastic met the fender. I secured and taped the grommet and taped up the gap and it instantly changed, runs like a top now.
https://youtu.be/CBM6wbP7SM0?si=RlWI9s…
This is where i got my info. It helped.
Fordslostbolt from United States 2 years ago
Catalytic converters would be the place to look. Sounds to me that they may be clogged.
RegigigasPKM from United States 5 months ago
Check your Intake Manifold Gasket. Mine would idle rough then cut off if the idle was too low even while driving
magis tv from Australia 3 months ago
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Revolutions go up and down

Ford F-150 2008  190581 miles
It starts normally and after a while the revolutions go up and down until it stabilizes again. Like 20 minutes afterwards it starts doing the same until it shuts off. The throttle body was cleaned, the spark plugs and cables were changed, but it does the same until shutting off.
lainie73 from United States 11 years ago  
LA
4 reports 
erfol81 from United States 4 years ago
New plugs, wires, maf, intake temp sen, throttle body cleaned. Going crazy cause no one ever post the solution 94 ford taurass sho yamaha 3.0 v6 115k. Only when the heater or ac is on does it go up to 1500 back down to 800 constantly
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Fuel issue

Ford F-150 1996 300 inline 6 fuel injected  337000 miles
So I bought the truck second hand and it cranks starts and runs very shortly and dies any fuel attempted on pedal and it indefinitely dies everytime idk what I should do and have mechanics background cleaned map and throttle body sensors fuse are good sounds like pump or getting power but again will start and it'll go to about 1500 rmp and then slowly die out what's the best route to fix this being budget friendly
Damyon from Canada 2 years ago  
DA
3 reports 
JohnBoy from Canada 2 years ago
Hi! Does it have a dual fuel tank system? If so, try switching the tanks. Could be the fuel sending unit. If not, check your fuel filter and pump first.
Caligula44 from United States 2 years ago
Plugs or coils is your problem . Misfiring in one or more of your cylinders. If that's not it check out the fuel pump.
Jray from United States a year ago
Done have all new from fuel to spark everything but the pcm
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Major loss of power

Ford F-150 1999 5.4 350000 miles
Im getting a P0161 code P1151 p1131 P0156 P0136 P0171 P0184 N0406 codes 1999 ford F150 5.4L I've changed maf sensors ege sensor's and throttle position sensor also blinkers and power mirrors stopped working I've checked for vacuum leaks also it's got me stumped
NailedIt76 from United States 2 years ago  
NA
1 reply 
jr4036 from United States 2 years ago
Check cvt or vvt solenoids there are 2 and they can cause all sorts of havoc just before they fail completely. Then it will feel like timing chain snapped. Use only genuine ford replacement though. Found out hard way using cheap dorman type.
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CODE P0171

Ford F-150 2001 Pick-up 148 miles
i have already replaced tthe MAF sensor,cleqned the throttle body just put in a PCVassembly and replaced all 4 02 sensors yet its still throwing P0171
Babys bunns from United States 2 years ago  
BA
1 reply 
Babys bunns from United States 2 years ago
i showing a P0171 ON Y BANK 1 AND A 174 ON MY BANK TOO HELP IVE CHECKED EVERY THING FOR LEAKS WHAT NOW IT STALLS WHEN I AT THE LIGHT
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Low power/ stall/ no codes

Ford F-150 2008 XL/ 4.6 liter 297000 miles
While driving at various speeds, truck stalls occasionally. Rough idle and loss of power as well. I have replaced-fuel pump and control module, plugs and COPs, cam and crank sensor, sent pcm out for testing(good), and pcv valve and tube, cleaned throttle body, had cats looked at(good). Sometimes it happens daily, sometimes I can drive it for a month. I’m ready to scrap it! Advice please.
Dave from United States 4 years ago  
DA
19 reports 
ARGC from United States 2 years ago
Am lost , what should I do?
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Running lean

Ford F-150 2001 super crew cab, 2 wheel drive, 4.6L 265000 miles
Truck is running rough, put OBD ll scan on it says lean on banks 1&2. Changed the TPS, also the cold air intake sensor. Nothing works.
Willey C from United States 9 years ago  
WI
8 reports 
TN Country Tinkerbell from United States 2 years ago
Yeah mine is a 2012 and I have replaced all 4 sensors twice and the bank 2 sensor 1 a third time have replaced purge valve, completely cleaned throttle body, new spark plugs and can't seem to figure out why in 2 years went from 22mpg highway to 15.9 while using premium fuel
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No power to my coils

Ford F-150 2006 5.4 125 miles
I replaced both cams rollers fazers timing chains cam sensors oil pump water pump throttle body throttle body sensors now I’m not getting power to my coils. I have checked all fuses and relays and no codes pop up any ideas?
Treeguy1077 from United States 2 years ago  
TR
1 report 

Acceleration problems, transmission

Ford F-150 2004 5.4 Triton  100000 miles
Ok I got my truck and it runs fine in reverse but when I put it in drive it runs really sluggish and the RPM's are very high . I changed out the throttle body and sensor then I ran a code tester and got the code for the speed control sensor. But none of that fixed my problem it still won't run right in drive . And 💡's
Topps from United States 2 years ago  
TO
1 report 

Cranks but still won't start

Ford F-150 1991 5.0 RWD 63000 miles
Got a truck from the oldest man on earth, 63k, replaced fuel tank, pump, filter, relay, pressure regulator, and injectors, also plugs and wires and battery, map sensor, throttle position sensor, and it still only starts on ether and won't stay running unless I'm putting ether in.
CthulhuInYourWoohoo from United States 2 years ago  
CT
2 reports 

At 40 wrench comes on

Ford F-150 2004 F150 fx4 5.4 triton  220000 miles
Says power limit at throttle body
Jeremy from United States 2 years ago  
JE
1 report 

Fails to run correctly

Ford F-150 2001 5.4 l supercar automatic 4x4  183 miles
Okay the truck doesn't want to run right it's like it's got no power you can feel it misfire your kick in and off I've got a new ECM I got a new injectors I got a new coil packs I got a new tank I got a new fuel pressure regulator I got a new fuel pump I've got new coil packs new spark plugs cam sensor crank sensor the differential pressure feedback sensor throttle body positioner sensor all this has all been put in here pretty much all new stuff even replace the wiring harness from the ECM out to the engine plug and play can't figure out why it doesn't want to run down the road very good it'll be fine unless it's an electrical issue
Harley guy one from United States 5 years ago  
HA
5 reports 

Cant drive but runs

Ford F-150 2010 5.4 145000 miles
My 2010 ford f150 had a throttle body sensor and a mass air sensor replaced n now the ecu reset but i go to drive it and soon i give it gas it falls on its face only drives as idel speed
ach86 from United States 5 years ago  
AC
7 reports 

2010 f150 help

Ford F-150 2010 5.4 145000 miles
Replaced throttle position sensor and reset the pcm truck no running soon i give it gas the check engine light and wrench light comes on truck runs bad
ach86 from United States 5 years ago  
AC
3 reports 

Have to floor truck to get going.

Ford F-150 1994 Standard Cab F-150 200000 miles
I have a 1994 of 150 and I have replaced the spark plugs wires throttle positioning sensor clean the throttle body remove both cats and put a piece a straight pipe in their place and also replaced the Ignition coil and clean the mass air flow sensor and still the truck doesn't react to me pressing the throttle until I have it to the floor and just recently I started backfiring.
Chad from United States 6 years ago  
CH
7 reports 

Throttle body will not enguage.

Ford F-150 2004 New body 5.4 4x4 super crew 183000 miles
Tps and throttle body test good. It's been in failsafe mode but now it won't allow the pcm to be reset. Eve put a new pcm in no change. Throws a ton of codes. Please help
Gus G from United States 7 years ago  
GU
7 reports 

Wont start was shaking before I changed throttle body tps

Ford F-150 2007 F150 5.4litre 14700 miles
Cranks but won't fire up changed everything. Throttle body throttle position sensor fuel pressure regulator
Jayw from Canada 8 years ago  
JA
4 reports 
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