Skip the auto shop - Our mechanics make house calls

Q: Have to accelerate slowly or dies

asked by on

81 bronco 351 Windsor...Idles great ...runs great down road ...unless you give it gas fast then stalls. If you push accelerator slow it is fine. c are issues? Timing?
My car has an automatic transmission.

A: Hey there. This problem of stalls on accele...

Hey there. This problem of stalls on acceleration is most likely caused by the carburetor accelerator pump is not pumping fuel into the engine when the throttle is pressed. This explains the vehicle running great at steady speeds and idles fine. The accelerator pump only works and pumps additional fuel into the engine when you accelerate. You can open the air cleaner and with engine off look into throttle opening and have someone push the gas pedal a couple time to see if you see fuel squirting or not. If no fuel is squirting, then the carburetor will need to be removed and overhauled or replaced.

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: Van dies when accelerating

Most of the time this is caused by a weak fuel pump or a failing crank position sensor. The most common cause of this on your vehicle is a bad crank position sensor. A mechanic would typically install a computer...

Q: Car won't turn over, but battery is charged

From the symptoms described, it lead me to believe that your Ford Bronco may have a bad fuse. If the battery is known to be good and yet there is still no power to the vehicle, then it is likely...

Q: My car idles high and bogs down when I hit the gas

Typically a high idle issue is caused by a bad idle control valve or a vacuum leak. When you apply pressure to the throttle and it bogs down, that tends to also be a vacuum issue. Some of the components...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.