Skip the auto shop - Our mechanics make house calls

Q: Stalling running heavy when I hit the gas pedal makes it chug

asked by on

Hi my Silverado when I hit the gas pedal it will go about a few feet and then the taxi drops down like it isn't getting any gas. When I am in park and I rev the engine up it almost dies when I back up it dies. I have already replaced fuel tank fuel pump fuel filter throttle body. Idle air control valve. I replace distributor cap and rotor and plugs and wires. I also changed the coolant temp sensor. I also changed the ignition control module. When I go uphill it chugs very bad feels like the truck is about to come apart. When I had the old tbi on it didn't do that all it did was stall. I had changed the fuel pump after it was running normal but died. So I had a new one put it ran great 2 weeks later back to the same thing. Mechanic said change the tbi that made everything worse. The injectors are so loud you can hear them inside the truck. He pulled the fuel pump out the sock was black and was nasty so we got a new tank as long with a new fuel pump. It stopped dying. The motor is new.

My car has 10000 miles.
My car has an automatic transmission.

Hi there. Unfortunately, anytime the original engine is replaced; there tends to be multiple issues that pop up randomly as you’re describing in your question. In most cases, it’s caused by a minor electrical glitch; either an exposed or frayed wire or a ground connection to a critical fuel or emissions sensor that is damaged. In order to accurately diagnose this problem, having a professional mechanic complete a car starts then dies inspection is a good idea.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Get a quote

What others are asking

Q: Grumbling sound while breaking at the stop light, brake pedal shakes

You are exactly right. It is your anti-lock braking system that is engaging when you hear that buzzing sound. A number of things could cause the anti-lock braking system to engage when it shouldn't. Some of these things would include:...

Q: Car smoking and roaring

The engine compartment on the Aveo is tight. Accident damage can shift items and create opportunities for item in the engine compartment to contact one another where they have not before. Depending on the severity of the damage, one possibility...

Q: I replaced my oil sending unit and it screwed I further than the old one kinda thinking i screwed up

The oil sending unit has threads that are tapered and the new sensor may have less of a taper than the old one, causing it to screw in farther. Be sure that you don't over tighten the sensor. You should...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.