my 1994 f150 shifts at high RPMS (can hear and feel it no tach) and it shifts kinda hard, doesnt slam but you feel it. Also the truck gets 8 MPG (im assumeing its due to the tranny problem) It also (pretty sure) that its drops a gear (eg 3-2 randomly) when im cruising....is this erratic shifting? If so could it be throttle pressure needs adjusting?

Any thoughts?

 

Pull the codes before you do anything else.

 

No codes were found.

Whats the next step?

 

little more info on the truck might help.

 

Whatcha mean? 1994 f-150 XLT auto tranny A4od? (i believe thats it...starts with an A)

 

mileage, shape, what have you done to it lately, serviced the tran, lately or ever, when last tuneup, etc........

 

Could be a bad VSS sensor, the VSS wiring and plugs or the PSOM.
What size engine do you have?
Non of the automatic transmissions with OD had a throttle pressure adjustment in 1994.
If it is a OD transmission then it could only be a 4R70W or E4OD as they were the only two automatic OD transmissions in 1994.

Does your speedometer work OK?
How about the ABS amber light on the dash, is it on?

 

@ subford, The tag on the side def says AoDE W.....and yes my ABS light is on...flashes 3 times then 2.

Spedometer works fine

@ quick- high mileage--196k 5.0L(thought i put the size sorry lol), although its in good shape...it goes fine other than when it shifts hard and like drops out of gear. Just did a tranny flush and new filter since the t case mount to tranny gasket was pissing. Fluids up to level. havent done a tuneup yet.....i have the parts just have had other problems to fix lol.

 

Anything? :P

 

Sorry mis read your post sub~ my airbag lights on--lol idk what i was thinking, ABS light is NOT on.

 

I would think you may have a bad PSOM even that speedometer is working OK.
It is either that or your PCM computer is working in fail safe mode.

Also sounds like you have a bad clockspring in your steering wheel:
PINPOINT TEST DTC 32: DRIVER SIDE AIR BAG CIRCUIT HIGH RESISTANCE OR OPEN

Normal Operation

NOTE:
The connectors for the air bag diagnostic monitor and the air bag sliding contact have metal spring clips that act as shorting bars. These shorting bars are built into the plastic hardshell connectors. The shorting bars are designed to short Circuits 614 and 615 together when the connectors are not mated. Do not attempt to remove the air bag shorting bar and measure the resistance of the driver side air bag module.

The air bag diagnostic monitor measures the resistance across Pin 10 (Circuit 615, GY/W) and Pin 11 (Circuit 614, GY/O) every time the ignition switch is turned to the RUN position. Normal resistance across these circuits is between 1.5 and 2.0 ohms. This resistance comes from the driver side air bag module (approximately 1.0 ohms) and windings of the air bag sliding contact (approximately 0.25 to 0.5 ohms per winding, two windings in all). If the resistance across these two circuits exceeds 4.0 ohms, this indicates a high resistance and the air bag diagnostic monitor will flash Code 32.

The shorting bar of the air bag sliding contact may be removed to measure the resistance of the air bag sliding contact. Use extreme care when reinstalling the shorting bar to make sure it is installed correctly.


Possible Causes

Excessive resistance across Pins 10 and 11 can be cause by:

1. A poor connection where the air bag sliding contact connects into the main wiring (14401). The air bag sliding contact connector at the base of the steering column may have excessive resistance between the male and female terminals in the connector.

2. An open circuit or high resistance in the windings inside the air bag sliding contact.
3. An open circuit or high resistance in the wiring harness in either Circuit 614 (GY/O) or Circuit 615 (GY/W).
4. An open circuit or high resistance in the driver side air bag module. DO NOT attempt a direct resistance measurement of the driver side air bag module. Follow the diagnostic procedures to determine if the resistance in the driver side air bag module is higher than normal.

Electrical Schematic, Driver Side Air Bag Circuit High Resistance or Open:


/

 

Im sorry, whats a PSOM? lol

 

PSOM: Programmable Speedometer/Odometer Module.

Located behind your speedometer:


/