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hdgene, ASE Certified Technician
Category: Transmissions
Satisfied Customers: 4922
Experience:  25 Years Automotive experience,ASE Master & L1 certified. Ford certified trans rebuilder
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Intermittent hard shift, particularly between 1-2, after

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Intermittent hard shift, particularly between 1-2, after higher rpms.
JA: How old is the transmission? Have you noticed any leaking?
Customer: No leakage. Approx. 215k.
JA: What is the model/year of your Ford?
Customer: 1995 4x4
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I put in a Lucas product last fall, It helped noticeably. Problem recently returned. Yes I am considering fixing this myself.
JA: Anything else you think the mechanic should know?
Customer: The overdrive light flashes when the transmission exhibits these symptoms.

Hello, this is a 1995 ford bronco? f series? What engine and transmission is in the truck? Since the od light flashes, have you run a test for codes with a scan tool?

Hello, do you need more help with this concern?

Customer: replied 5 months ago.
I still want to tackle this problem. My truck is a F150 with a 5.8l. I have not retrieved any codes. I don't know how many miles on the transmission. At least 120k.

Ok, since the od lamp is flashing, a check for codes with a scan tool will need to be done to find out what transmission codes are stored. It could be an issue with a solenoid body or something else. Once you know what codes are stored will help pinpoint what direction needs to be followed to help fix this concern.

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Customer: replied 3 months ago.
Gene, I'm still here. DTCs refer to trans temp voltage(636) and insufficient VSS signal. ( I forgot that number) Where are these sensors? and where are their parameters?
Customer: replied 3 months ago.
oops -- What are their parameters?

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