When you press on the gas pedal, your truck should accelerate steadily. If it loses power while accelerating, or in other words, hits a point where it stays a consistent speed until you press the gas pedal down significantly further, this is a sign that something is amiss. Here's a look at the most likely possibilities:
Your Fuel Filter Is Clogged
Between your fuel pump and the fuel injectors, there is a filter means to trap any impurities or debris in the gas. If the filter becomes too clogged, it can slow down the flow of gas to the fuel injectors, making your truck lose power during acceleration. Luckily, changing a fuel filter will take your mechanic a few minutes and will probably cost you less than $100.
Your Air Filter Is Clogged
Your truck may also lose power if the air filter is clogged. When the filter is clogged, not enough oxygen makes it to the combustion chambers to burn the fuel properly. Luckily, you can change your engine's air filter yourself without knowing hardly a thing about mechanics. Locate the filter; your owner's manual will help. Lift it out of place, and set a new one down where it rested. There may be a latch or two you have to close over the filter.
Your Camshaft Position Sensor Is Malfunctioning
This issue is a somewhat more serious one that you may want to have your mechanic check for if changing the air and fuel filters does not help. The camshaft position sensor detects the speed of the vehicle and adjusts the gas flow accordingly. In newer vehicles, it has computerized components that can sometimes fail prematurely. Your mechanic might need to replace the part entirely--or just replace some of the wiring leading to it.
Your MAF Sensor Is Misfiring
The mass airflow sensor, or MAF sensor, is responsible for measuring and regulating the flow of air into the engine. If it stops working properly, not enough air may reach the engine. Your check engine light will generally go on if this sensor is failing. Your mechanic may just need to adjust or recalibrate the sensor, or they might need to replace the part.
When your truck is losing power, don't automatically conclude that something major is wrong. Most often, changing the air filter and gas filter will eliminate the issue. If not, then one of the sensors described above is probably at fault. Contact a company like River's Truck Center for more information and assistance.