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  • 31-03-2022 4:55pm
    #1
    pgj2015
    Registered Users, Registered Users 2 Posts: 9,718 ✭✭✭


    I got a second hand gearbox fitted yesterday. since I got the car back I find myself driving faster than normal, 70 mph in a 60 mph zone, 60 in a 50 zone etc 4th and 5th gear are dead, 50 mph to 60 mph in 5th gear is dead, no response really when I accelerate.



Comments

  • #2
    Neilw
    Registered Users, Registered Users 2 Posts: 3,795 ✭✭✭Neilw


    Different gear ratios, have you checked actual speed by GPS compared to your speedometer?

    Is sounds like longer gears, possibly a box from a diesel, is your car petrol?



  • #3
    mickdw
    Registered Users, Registered Users 2 Posts: 23,688 ✭✭✭✭mickdw


    Wrong gearbox I'd say.



  • #4
    Turbolounge
    Registered Users, Registered Users 2 Posts: 138 ✭✭Turbolounge


    It's possible the car has a different gearbox that isn't that same as what was originally in the car, but what car were you driving whilst yours was down getting the new box fitted? If you were in a different car for a few days it's possible your senses were thrown off in the different car



  • #5
    pgj2015
    Registered Users, Registered Users 2 Posts: 9,718 ✭✭✭pgj2015


    it is a diesel 1.6 peugeot partner.

    I was driving another diesel car but just for 1 day and I have driven the other car loads of times before.

    I will check what the GPS speed reads.



  • #6
    pgj2015
    Registered Users, Registered Users 2 Posts: 9,718 ✭✭✭pgj2015


    I checked the GPS speed there


    50 kph on speedometer 45 kph on GPS

    60 kph on speedometer 62 kph on GPS

    80 kph on speedometer 76 kph on GPS

    100 kph on speedometer 91 kph on GPS


    5th gear going up a hill, it loses power.



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  • #7
    harmless
    Registered Users, Registered Users 2 Posts: 980 ✭✭✭harmless


    https://www.boards.ie/discussion/comment/118862722#Comment_118862722

    Sounds like longer gear ratios, could be difficult to prove without taking the box out again.

    Ask the mechanic that worked on it.



  • #8
    pgj2015
    Registered Users, Registered Users 2 Posts: 9,718 ✭✭✭pgj2015


    https://www.boards.ie/discussion/comment/118862753#Comment_118862753

    I am considering getting the original gearbox reconditioned. I would be wary of trying another second hand gearbox.



  • #9
    jumbone
    Registered Users, Registered Users 2 Posts: 609 ✭✭✭jumbone


    https://www.boards.ie/discussion/comment/118862722#Comment_118862722

    Would it not be totally normal for the cars speedo to overread vs a GPS one by about 10%


    Also you don't mention the speed you'd be doing but climbing a hill in top gear is always gonna be a bit of a struggle



  • #10
    pgj2015
    Registered Users, Registered Users 2 Posts: 9,718 ✭✭✭pgj2015


    https://www.boards.ie/discussion/comment/118864239#Comment_118864239

    Yes the gps usually reads lower than the speedometer. not sure about 91 kph on gps though.


    I would be doing between 50 mph and 60 mph going up the hill.



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