Brad & Jacolyn Posted Thursday at 11:19 AM Report Share Posted Thursday at 11:19 AM Good Morning, I have a Freedomline transmission in my 2004 Volvo 630. Lately it has started being hesitant (definitely slow) while down shifting. Someone mentioned it could be the brake switch. Any ideas what I should be looking for or is it just a trip to a mechanic shop? Thanks Brad Quote Brad and Jacolyn Tucker the Wonder dog and Brynn the Norfolk Terrier 2009 Smart "Joy" 2004 VNL630 "Vonda the Volvo" 2008 Hitch Hiker 35 CK Champagne Edition VED12 465 HP, Freedomline, 3.73 ratio, WB 218" Fulltiming and loving it. Link to comment Share on other sites More sharing options...
Darryl&Rita Posted Thursday at 12:33 PM Report Share Posted Thursday at 12:33 PM Never had one, or worked on one, but it seems a stretch to point at the brake switch. To eliminate it, look under the dash, or on the firewall. There should be two, a NO for the brake lights, and a NC for the ECM. Fill the air tanks, disconnect the wires, and apply the brakes. Use a multimeter to verify operation of each switch, paying attention to the NC. More likely, the clutch needs adjusting. I'm basing this on my understanding of auto shift transmissions. The ECM uses engine RPM, road speed, throttle position, boost pressure, and a handful of other parameters to pick a gear position. Nowhere in the list is brake switch. Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
Wrknrvr Posted Saturday at 11:56 AM Report Share Posted Saturday at 11:56 AM I thought this would help? But I need help? Two things that could help with your situation, and I think should be replaced with the age of your truck. One is the throttle position sensor. Fairly easy replacement. The other would be the speed sensor on the rear of the transmission. Could be easy? Or could be interesting to accomplish? Now for my needed help, since I am not a computer person, I hope it will be along today. Quote Link to comment Share on other sites More sharing options...
Darryl&Rita Posted Saturday at 03:13 PM Report Share Posted Saturday at 03:13 PM Freedomline manual from Vern Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
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