Mechanics

F150 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.
Avatar
Mizzad
July 22, 2010.



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.

Rasmataz
Jul 23, 2010.