Throttle Position Sensors (TPS) Buying Guide — Cheap OEM Replacement Parts for Sale | REVXSC
Looking for cheap throttle position sensors that won't fail in 6 months? Whether you're chasing ford explorer throttle position sensor symptoms, how to test a tps with multimeter, best throttle position sensor for ford v6, p0121 ford explorer tps replacement, throttle position sensor adjustment ford, this guide covers what to buy, what to skip, and how to make sure the part you order actually fits your truck or car. Every throttle position sensor sold at REVXSC ships with a verified year/make/model/engine fitment table — no guessing.
What throttle position sensors actually do
In one sentence: the small sensor mounted to the throttle body that tells the ECU how far the throttle is open so it can adjust fuel and ignition timing. When they wear out, you'll typically feel it before you see it — your car starts telling you something is wrong, and ignoring it gets expensive.
Signs you need new throttle position sensors
- check engine light with P0121 or P0122 code
- hesitation or surging during acceleration
- rough idle or stalling
- transmission shifting erratically
- loss of throttle response or limp mode
If you tick more than one box, replace before it leaves you on the side of the road. The repair gets a lot cheaper when you catch it early.
Also known as
Depending on the shop manual, region, or supplier you're reading, throttle position sensors are also called: TPS, throttle sensor, throttle position switch, TP sensor, throttle angle sensor. They all refer to the same component — when you're cross-referencing OEM and aftermarket part numbers, watch for these naming variations so you don't double-order the same item.
How much should you pay?
Online direct-ship from REVXSC undercuts dealer parts counters significantly. We carry quality replacement throttle position sensors from Walker Products, United Motor Products, Standard Motor Products, Bosch, Delphi, ACDelco, NTK, Hitachi — every listing shows the price, the fitment chart, and real product photos. No mystery part numbers.
Featured throttle position sensors in stock right now
Shop all Throttle Position Sensors (TPS) →
OEM vs aftermarket: which to choose
For throttle position sensors, the brand actually matters. Walker Products and United Motor Products supply major automakers as OEM suppliers — when you buy their boxed retail product, you're getting the same engineering and tolerances. Choose OE-replacement TPS sensors for standard service or premium sealed Walker Products and Bosch sensors for severe-duty and high-mileage applications..
Install: DIY or shop?
Difficulty: beginner. Bay time runs about 20–60 minutes with the right tools. Lifespan you should expect: 80,000-150,000 miles.
How REVXSC keeps prices low
Every listing includes a year/make/model/engine table.
ACDelco, Bosch, Dorman, Dayco, FEL-PRO and more.
Ships from US warehouses with real tracking.
No knockoff boxes, no rebranded junk.
Throttle Position Sensors (TPS) shipping to every US state
REVXSC ships throttle position sensors same-day from US fulfillment to every state. Whether you're chasing salt-corroded throttle position sensors in the Midwest, heat-fatigued parts in the Southwest, or just need a fast OEM-grade replacement, every order ships from the US with tracking. We deliver to:
Common questions Americans ask about throttle position sensors
How much does a throttle position sensor cost?
TPS sensors run $20-$80 from Walker Products, Standard Motor Products, or Bosch. Premium OE-equivalent units cost $60-$150. Shop labor adds $50-$100, putting most jobs at $80-$200 total.
What does a throttle position sensor do?
It is a variable resistor that reports throttle plate angle to the ECU. The computer uses this signal to calculate fuel injection timing, ignition timing, and transmission shift points. A failed TPS makes all three behave erratically.
What are the symptoms of a bad TPS?
Common signs include check engine light, hesitation during acceleration, surging at cruise, rough idle, and erratic automatic transmission shifting. You may also feel sudden power loss when the sensor goes intermittent.
How long does a throttle position sensor last?
Most last 80,000 to 150,000 miles. The carbon resistive track wears out with throttle movement, creating dead spots. Severe-duty and hot climates shorten life significantly.
Can I drive with a bad throttle position sensor?
Yes but expect poor driveability and potentially limp mode where the ECU defaults to a fixed throttle position. Get it replaced quickly to avoid being stranded with reduced power.
How do I test a TPS with a multimeter?
Backprobe the signal wire and ground. With key on and engine off, slowly open the throttle by hand. Voltage should sweep smoothly from about 0.5V at idle to 4.5V at WOT. Any dropouts or sudden jumps mean the sensor is bad.
Do I need to adjust the TPS after installing it?
Most modern TPS sensors are non-adjustable, just bolt-and-go. Older Ford sensors require setting the base voltage to 0.96V at closed throttle with a multimeter. Always check the service manual for your specific year.
How long does it take to replace a throttle position sensor?
Most TPS sensors are 15-30 minute swaps. Two or three screws hold them to the throttle body, disconnect the harness, swap the sensor, and reconnect. Some Ford applications need a relearn with the scan tool.
Where is the throttle position sensor located?
Always on the throttle body, opposite the throttle cable bracket. It bolts to the end of the throttle plate shaft so it can read the plate angle directly. Easy to spot once you locate the throttle body.
Top US searches for throttle position sensors
Most-searched phrases from American shoppers comparing throttle position sensors this year — all of these are served by what REVXSC stocks:
This guide is updated as our throttle position sensors (tps) inventory and fitment data change. Last reviewed 2026-06-28.