Truck lags

Tiny
BBORCHERS
  • MEMBER
  • 1993 FORD F-150
  • 6 CYL
  • 2WD
  • MANUAL
  • 191,000 MILES
1993 ford f150 4.9L - Lags when accelerating.I step on the gas and it slowly starts to accelerate then finally after a second or two starts to pick up speed. It also jumps and****** on occasion when I am taking off from stopped. I am thinking exhaust system?
Monday, February 14th, 2011 AT 2:37 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it and keep testing.
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Monday, February 14th, 2011 AT 6:10 PM
Tiny
BBORCHERS
  • MEMBER
  • 2 POSTS
Will begin tomorrow. Lol. Thanks razmataz
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Tuesday, February 15th, 2011 AT 12:38 AM

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