☰
GET A QUOTE

Q: Loss of power once I hit 70-80 mph

asked by on November 27, 2016

When I floor on the gas pedal my truck picks up quick and gains speed quick until I get to 70-80 mph I loose power but not all of the power

My car has 89000 miles.
My car has an automatic transmission.

Recommended Services

Fuel Pressure Regulator Replacement $126.81 - $1011.90 Get a Quote
Fuel Filter Replacement $98.50 - $325.56 Get a Quote
Fuel Pump Replacement $145.32 - $1299.70 Get a Quote
Loss of power Inspection $94.99 - $114.99 Get a Quote
Or For Any Other Auto Repairs Get a Quote

Hi there. Check the fuel pump and make sure that its working. Check the fuel pressure on the fuel rail and see if there is a loss of pressure. Its common for the fuel pump in the Silverado 1500 models to loose efficiency when there is a demand for a higher fuel pressure. Also, check the fuel pressure regulator on the fuel rail for any debris. I recommend performing an injection flush to clean out the fuel system and clean out the injectors. If you have an inline fuel filter, I recommend replacing the filter. Then retest the vehicle to see if the engine will have a loss of power at 70 to 80 mph. If there is still a loss of power, then I recommend replacing the fuel pump. If you need further assistance with a loss of power at 70 to 80 mph, then seek out a professional, such as one from Your Mechanic, to help you.

Chevrolet
2005
V8-5.3L
Silverado 1500
fuel pumps
fuel pressure
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I check the aim of the headlights?
While your headlights shouldn’t need to be adjusted for a very long time, it’s possible that carrying heavy loads or even minor impacts could affect their aim. This has obvious implications for driving at night or during other times when...
Read more
No control over steering
If you really have zero control over steering the wheels it sounds to me like something more serious has broken. The rack and pinion itself has failed, or the intermediate shaft between the steering column and rack and pinion has...
Read more
Seatbelt warning when no one in seat
This is a failure of the seat occupant sensor. This is very common on your vehicle. The sensor fails and makes the computer think that there is someone in the seat. The sensor would need to be replaced as the...
Read more
Jeep won't start due to alarm
The WCM (Wireless Control Module) or antitheft system has issues that it is affected by static discharge when you enter the key and it locks you out. The WCM/SKREEM (Sentry Key Remote Entry Module) will need to be replaced with...
Read more
Check engine light is on
Hello. If the trouble codes have remained after the crankshaft position sensor has been replaced then it may be possible that the issue lies elsewhere. P0335 is the trouble code for a crank position sensor malfunction. The circuit includes the...
Read more
I have a truck that won't run and is not getting gas to the engine. Fuel pump is running, have a new filter and new fuel pressure
Hi There, It sounds like you may have a clogged fuel injector (https://www.yourmechanic.com/services/fuel-injector-replacement) or potentially a faulty injector that is fried internally. I would suggest testing them if you have access to a multi meter. Disconnect the injector from the...
Read more
2013 Ford Focus Transmission Issue. Is it worth keeping the car?
Hi There, This is a known issue in this generation Ford Focus and some Fiestas with the "Power Shift" transmission and there have been numerous recalls and lawsuits. Although, it is would be difficult to determine how much longer your...
Read more
I have the Epc light on, took my car for major service and the mechanic replaced the high pressure fuel pump and lastly told me th
Hi there. The EPC stands for Electronic Power Control. This light comes on when there is a problem with the engine. In some vehicles, the EPC limits the amount of throttle that can be used so that the engine is...
Read more
Car still shaking after replaced coils and spark plugs codes cleared still showing misfire in coil 3
The code P0353 on this after you only had misfire codes and you changed the coil and plugs on cylinder number 3. You should disconnect cylinder coil and check connector and pins in coil are not damaged and if they...
Read more

Related articles

The Best Used Cars to Buy If You're an Undercover Cop
If If you're an undercover cop, when you choose a used vehicle, your main purpose is to look like anything but a cop. That means, of course, that an unmarked Crown Victoria is probably not the wisest choice. We’ve evaluated...
Read more
Symptoms of a Bad or Failing Fuel Pump
Common signs include a whining noise, hard starting, engine performance issues, and an inability to start the car.
Read more
How to Buy a Classic Chevy
For experienced car collectors and rookies alike, owning a classic Chevy is a rite of passage. There are multiple decades and styles in which Chevrolet made popular cars. Many of these cars then had a devout following in the years...
Read more

Browse other content

Estimates
Services
Maintenance
Cars