| Author | Message | ||
     Matt Anderson (Disco01) New Member Username: Disco01 Post Number: 16 Registered: 10-2003 |
I have noticed that if I am accelerating quickly and letting the engine rev to say 4500 rpms or above before shifting that it will stumble at about 3500 and the revs will drop a few hundred then continue on accelerating. It feels almost like the torque converter unlocks to shift but then doesn't, so it relocks. Basically it goes like this...smooth from idle to 3500 drops to 3200 then smooth until 4500. Should I be concerned? Thanks, Matt | ||
| Matt Anderson (Disco01) New Member Username: Disco01 Post Number: 17 Registered: 10-2003 |
ok, let me ask this.....does anyone elses do this? | ||
| john heath (Jheath6) Member Username: Jheath6 Post Number: 112 Registered: 09-2003 |
sounds like the vss to me | ||
| Greg Davis (Gregdavis) Senior Member Username: Gregdavis Post Number: 1051 Registered: 08-2002 |
Mine goes all the way up to 5k with no stumbles. So, no, I don't think that is normal. | ||
| john heath (Jheath6) Member Username: Jheath6 Post Number: 115 Registered: 09-2003 |
if when u are getting up to speed on hills it seems to happen more because you are giving it faster rpms and it feels like someone just shut the gas off for a second and then it kicks back in it is probably the vehicle speed sensor . do a search on it you will see many similar people having the same problem i had it and new vss runns like new again | ||
| Joey (Joey4420) Senior Member Username: Joey4420 Post Number: 335 Registered: 04-2003 |
If it was a Disco I, which I see it is not. I would say VSS or Fuel filter, but being a Disco II, I doubt it is the fuel filter. Of course if it was me I would find a way to add one. | ||
| Peter J. Kelly (Pjkbrit) Member Username: Pjkbrit Post Number: 48 Registered: 05-2003 |
My 99 does not do that either...my sis in laws 00 also doesn't...are you under warranty still? | ||
| Matt Anderson (Disco01) New Member Username: Disco01 Post Number: 18 Registered: 10-2003 |
Thanks for the replies guys, it is not still under warranty. When I put the trans in sport mode it is really not noticeable, but it is still there. In normal, it is very noticeable. It could be the VSS but it runs perfectly other than this. Also, the speedo works fine and so does the cruise. I think it has something to do with a sensor or computer. What kind of things could be in the trans that could cause it-any? | ||
| john heath (Jheath6) Member Username: Jheath6 Post Number: 120 Registered: 09-2003 |
not to dwell on the vss but when mine first started going my cruise worked too and it didn't happen that often and the speedo was fine also. but sure enough it started happening more often and the rpms would start reving up and down while coasting down hills and then bang speedo went out and all hell broke loose. this all took 2 months to progress to the last part | ||
| john heath (Jheath6) Member Username: Jheath6 Post Number: 121 Registered: 09-2003 |
good way to tell is just unplug vss and go for a ride you won't have a speedo but if it is the vss your problem will go away | ||
| Dean Brown (Deanbrown3d) Senior Member Username: Deanbrown3d Post Number: 939 Registered: 02-2002 |
Matt, mine does a somewhat similar thing on a particular slope on the way home from work. Its very steep and I start off in 1st, and hold it there for a while. Otherwise it tries to change to 2nd, then hesitates, and changes back to first again, its like it tried to change but decided it couldn't after all. This may be part of a dumb algorithm in the tcu I dunno. Is it possible yours is doing a similar thing in higher gears? | ||
| john heath (Jheath6) Member Username: Jheath6 Post Number: 124 Registered: 09-2003 |
that almost sounds like a problem a dI has with the kickdown cable adjustment | ||
| Matt Anderson (Disco01) New Member Username: Disco01 Post Number: 19 Registered: 10-2003 |
Just curious, where is the VSS located so I could unplug it and see if that makes a difference? Thanks | ||
| john heath (Jheath6) Member Username: Jheath6 Post Number: 125 Registered: 09-2003 |
a little plug between the transfer case and drum brake , just look up between them and you will see it hope you have skinny fingers to get to it and you will need a skinny screw driver to help pop off the connector snap. like i said you will lose your speedo and cruise while you test is but your tach will still work to let you know your rmps | ||
| john heath (Jheath6) Member Username: Jheath6 Post Number: 126 Registered: 09-2003 |
unplugging and plugging back in is a 2 minute job if it is the vss one 3/16 alen head socket with 2 ,,6" extensions to get it off to replace and some swearing and dust in the eyes to put the little bugger up in that god forsaken tiny space. | ||
| john heath (Jheath6) Member Username: Jheath6 Post Number: 132 Registered: 09-2003 |
please tell me how it worked out the more info. we get the more we can help | ||
| Matt Anderson (Disco01) New Member Username: Disco01 Post Number: 20 Registered: 10-2003 |
Well I got under there today and there wasnt a plug where John described it. I saw a capped place where it could have been, so they must have moved it on the D2. There is a round plug with about 8 or so orange wires going into the trans towards the back before the t-case....could this be it? Thanks | ||
| john heath (Jheath6) Member Username: Jheath6 Post Number: 138 Registered: 09-2003 |
ok since i see it is a disco 2, i don't know where its located or if it has one but don't pull the wires on the transmission you have electronic controled •••••• |
