SPONSORED LINKS

1989 Ford F350 Engine stumbles when going from idle to open

Tiny
C MARK TAYLOR
  • MEMBER
  • 1989 FORD F-350
  • V8
  • 2WD
  • AUTOMATIC
  • 124,560 MILES
I have a 1989 F350 w/460 V8 and 124K miles. I has started almost dying when I press on the accelerator and go from idle to acceleration. Also when I'm coasting down a hill with my foot off the gas pedal, it back fires. What's the concensus, a vacum leak or possibly the throttle position switch?

Thank you Mark Taylor
SPONSORED LINKS
Saturday, February 6th, 2010 AT 8:22 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test all the following below:

Oxygen sensor
Catalytic converter
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)
Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, February 6th, 2010 AT 8:41 PM

Please login or register to post a reply.

Related Engine Hesitate Content

Vacuum Leak Test and Repair
VIDEO
Vacuum Leak Test and Repair
Instructional repair video
Hesitation
GUIDE
Hesitation
An engine hesitation is an interruption of continuous power during acceleration. When a engine is hesitating it will cause the car to lunge or surge which will cause a...
VIEW MORE

Sponsored links