2001 Volvo 660 Eaton Fuller Automatic Transmission Problems

Discussion in 'Volvo Forum' started by tiremanmike, Feb 6, 2014.

  1. tiremanmike

    tiremanmike Bobtail Member

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    Feb 6, 2014
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    Hello,

    Ive owned my 2001 Volvo 660 for years now and ive always had some type of problem with the auto shift transmission. Ive adjusted and replaced the clutch several times, replaced the slay cylinder and etc. But recently the truck was driving normal and then went into neutral and would not go into any gear or reverse. After reading several forums online, I think it may be the input shaft speed sensor but i wanted to ask for advice before I start to test. Any advice?
     
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  3. wrongway597

    wrongway597 Bobtail Member

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    Feb 6, 2014
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    I've owned mine for years and have only had that problem when the clutch was out of adjustment, the clutch brake could be the problem. It should go into gear even if the truck is not running. I would have to turn the key on, push in the clutch and move the selector to D or R, after I heard the accuators put the truck in gear I would turn the key all the way to start and hold it there, then move the selector to N till it started cranking and put it back in D or R before the engine started. Sometimes it would take me a couple times to get it right but I could at least get it in gear to move the truck. I have had to replace the actuators once and the clutch once, but other than that it has been a good transmission for me.
     
  4. tiremanmike

    tiremanmike Bobtail Member

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    Feb 6, 2014
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    We replaced the clutch brake a month ago. Code Output Shaft Speed Sensor is showing on the dash, so were going to try to replace that today to see if that fix the problem. We called Road Ranger yesterday and they stated that Output Shaft Speed sensor will cause is not to move if its at fault.
     
  5. wrongway597

    wrongway597 Bobtail Member

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    Feb 6, 2014
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    Yeah, if it is showing a code, that would probably do it. Didn't know it had an active code in it. Good place to start. Good luck and let me know if that fixes it in case I have the same problem.
     
  6. tiremanmike

    tiremanmike Bobtail Member

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    Feb 6, 2014
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    That didnt work either. It is still not moving, but it will shift from 2nd gear to 3rd gear.
     
  7. J&J custom hauling

    J&J custom hauling Bobtail Member

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    Feb 2, 2014
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    I know- older post- Im curious if you figurd out your issue with the transmisison acting up? I have a 01 770 with autoshift and n-14 eninge. from what i have read a lot online- most issues are due to dirty wiring harness or they are loose....the truc ki just bought- the xyshifter had a bad electric motor contact on the end cap- which melted it. (plastic on the end cap)...

    thanks.. J&J
     
  8. karibah

    karibah Bobtail Member

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    Mar 15, 2018
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    hello i have a 01 and i have problem with my transmission it can only do two and three, is this a transmission issue or what is it .
     
  9. Dream7988

    Dream7988 Bobtail Member

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    Nov 14, 2021
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    Hey I just wanted to say this has helped me tremendously I actually bypassed the starter relay to a push button start and key in start position and start in D=Drive ready to go just let go clutch and has saved me and my family stuck farway from home God Bless you . You are so Smart!! Amen I understood you completely first time saved me and then again I remembered what I read 5 months ago what you wrote Thanks Thank you!!!
     
  10. Dream7988

    Dream7988 Bobtail Member

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    Nov 14, 2021
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