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Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Transmissions
Satisfied Customers: 3253
Experience:  Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicle
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Early 03 7.3 tranny wont shift to 3rd help please, F 350,

Customer Question

Early 03 7.3 tranny wont shift to 3rd help please
JA: What is the model of your '03 Ford?
Customer: F 350
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: Yes i put a new tranny in other one was shot tried the old sensors and bought a new vss on rear diff still throwing p0500 and OD light flashing
JA: Anything else you want the mechanic to know before I connect you?
Customer: Also put in a new shift solenoid block
JA: How old is the transmission? Have you noticed any leaking?
Customer: Tranny said to have 80,000 on it and no leaking
Submitted: 9 months ago.
Category: Transmissions
Expert:  Chad Farhat replied 9 months ago.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Customer: replied 9 months ago.
Hi chad and thank you
Expert:  Chad Farhat replied 9 months ago.

you welcome

has the torque converter bee replaced ?

the possible causes are several

1- PCM

2- open in vss harness circuit

3- short to power in vss harness

4- short to ground vss harness circuit

i sent you all the diagrams and steps needed to test which is the issue.

PCM is common but you have to test , harness could the issue too .

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

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