1997 Ford F-150 Slip or Hesitation before trans engages

  • 1997 FORD F-150
Transmission problem
1997 Ford F150 6 cyl Two Wheel Drive Automatic 81000 miles

My 97 F150 will hesitate momentarily before engaging first gear. It then will drive fine. I had the fluid level checked, it was full. Had a service, new fluid and filter, still acting up. Changed the internal solinoids on the valve body because mechanic told me it was giving the code for a bad soliniod. It will work fine with NO problems if you manualy shift it into first.
I am at a loss. Local dealership has no or will not give any advice.
Do you
have the same problem?
Thursday, July 22nd, 2010 AT 2:55 PM

1 Reply

Lack of acceleration, chugging, hesitating, bogging etc. Could be caused by one of the following below:

Possibilities: Inspect and test all the following listed 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.
False air leakage.
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.
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Friday, July 23rd, 2010 AT 1:08 AM

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