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Code came up engine light on P0785 shift timing soleniod

Customer Question
code came up engine light...
code came up engine light on P0785 shift timing soleniod reading on code
JA: Have you scanned the code? Have you tried to reset it?
Customer: tranny guy did a reset code it came back two days later mytbe less
JA: What is the model/year of your Volvo?
Customer: failed inspection car is jumping and seems like when i come to stop and then go to drive it feels like a bop in gear from back
JA: What year is your Volvo?
Customer: s60 auto 2.4 5liter awd
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: nothing looking to see how to do it and if it even is something i can do not a mechanic though
JA: Anything else you think the mechanic should know?
Customer: thatsabout it
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Volvo Mechanic about your situation and then connect you two.
Submitted: 1 year ago.Category: Volvo
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Answered in 7 minutes by:
7/1/2016
Volvo Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Volvo
Satisfied Customers: 4,139
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicle
Verified

Hi, I' m Chad. Welcome to JustAnswer. I' m reviewing your question now, and I will be post back with your reply ASAP

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Volvo Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago

hey , what year is the S60 Volvo please ?

Thank You

Chad (aka-Jhook1398)

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Customer reply replied 1 year ago
2002 awd auto 2.4 5
Customer reply replied 1 year ago
I was told the part was shift timing solenoid A but all the parts I called on say numbers like 1 2 3
trying to get the part number and roughly hours and how to replace
Volvo Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago

ok great , thank You

no problem let me look all that up and i will post a reply shortly

Chad

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Volvo Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago

If you look at the diagram I sent you and read the description of the fault please it Says : Poor gear Shifting Quality, does not indicated any shift or lock up SL problem

1-The P0785 code is usually internal clutches damage or dirty filter

you can try changing fluid first

2- You can check these solenoids by checking resistance and know if they are defective Using an voltmeter set to resistance testing

3- If the solenoids are okay , then that means internal , clutches, TCC converter etc...

4- To take out the valve body and get to the solenoid it calls for 4.2 hr labor , now they dont list part number , but just by calling the dealr and give him the vin# ***** can get it for you since each solenoid has a seperate name ( S1 thru S5 shiftying solenoids) SLS SLT SLU

Solenoid SLT, SLS and SLU Measure the resistance between both the pins in the solenoid connector. Correct value: 5.0-5.6 ohms.

Solenoid S1 Measure the resistance between the pin in the solenoid connector and the transmission ground terminal. Correct value: 12-16 ohms. Solenoids S2-S5 Measure the resistance between the pin in the solenoid connector and the transmission ground terminal. Correct value: 11-15 ohms. If the resistance of any of solenoids S1-S5 is incorrect Replace the solenoid. See Replacing solenoids S1-S5.

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Volvo Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago

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