Q: Fuel supply issue

asked by on April 30, 2017

My 1989 chevy k1500 4x4 5.7L v8 wont go above 40 mph

Fuel Pump Replacement $145.32 - $1299.70 Get a Quote
Fuel Injector Replacement $400.56 - $3968.30 Get a Quote
Fuel Pressure Regulator Replacement $126.81 - $1011.90 Get a Quote

It sounds like you may have a fuel supply problem in getting the proper amount of fuel to the fuel injectors which may be caused by a bad fuel pump or potentially faulty fuel injectors. This can happen when the pump itself is not working properly or when the fuel pressure regulator is not maintaining the proper fuel pressure in the fuel system causing the engine to starve for fuel. This can also happen when there is insufficient connectivity to the fuel injectors which can cause an intermittent fuel spray pattern into the intake system resulting in a lean fuel condition or the motor otherwise starving for fuel. I would recommend having an expert from YourMechanic come to your location to diagnose your fuel system.

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 you clear the MyKey system?
While the MyKey® system on your car can provide enhanced safety and peace of mind, it may be necessary to clear it eventually. After all, the point is to teach younger drivers responsible habits. Once they’ve learned, you should clear...
How do I import a wallpaper for the multi-information screen?
You can select a custom wallpaper to be the backdrop for the multi-information display screen. To import a wallpaper into the multi-information display screen, you will first have to have imported a wallpaper from a USB port. Then, follow these...
Hard to steer.
These vehicles have hydraulic power steering systems. If any fluid is leaking from the system it can cause the system not to function properly. The basic parts of the system include the power steering pump, lines, rack and pinion, and...
It stalls while driving, fuel pump has been replaced, checked fuel module...still stalls in middle of road
There are a huge amount of possible causes for your stalling problem (https://www.yourmechanic.com/services/car-is-stalling-inspection). They include other fuel related components, ignition (spark) components, electrical components, or air intake components. Do you know for a fact your technician scanned the computer for...
My timing belt broke what should I do? Can I drive my car?
Hello, thank you for writing in. The timing belt is responsible for keeping the camshaft and the crankshaft in sync so the valves will open and close accordingly. With that said, the vehicle is likely not going to run at...
Hi Chris I have a 2011 mitsubishi galant and I need a radiator with sensor and the the problem is I can't seem to find one and ol
I would recommend looking on Google for this particular part in the shopping section. This will give you access to many aftermarket versions of various parts. It is very likely that you will find it there. You could also try...
My 2010 Ford Ranger is not shifting right
Hi there. When this occurs on this transmission it is almost always due to an internal issue with the transmission. The most common issue I have seen is a failure in the front sprag assembly. When this assembly fails the...

Related articles

How Long Does a Power Steering Hose Last?
Chances Chances are good that your car’s power steering system is hydraulic – most of them are. Electronic power steering (EPS) is becoming more common, and older, manual style systems are still out there, but hydraulic systems are by far...
The Traveler’s Guide to Driving in India
India India has a rich history and a fascinating culture, and it is no wonder why so many people want to visit. There are many different things that you can enjoy when you visit (http://jalopnik.com/a-guide-to-driving-in-india-without-dying-262254628) India. Some might want to...
What Does the DRL Warning Light Mean?
If the DRL warning light stays on after you start your car, it may mean that there is a faulty bulb or circuit issue with your headlights.