ive just put new break pads on my 1.6 lantra ls and now the car jumps occasionally as if i was in too high a gear, but it doesn't do it all the time

its ok between 0-15 mph
occasionally jumps 15-25
jumps quite a bit 25-35
never 35+

what could cause this?

does it have anything to do with the break pads or is this just a coincidence
or has the procedure of putting new pads on moved something else thats cause this

oh and its a manual and im using the same gears as i have for 9 month since i got the car

This post has been edited by Clarky101: Apr 10 2008, 01:32 PM

I don't see how brake pads could do anything like that. If it was an automatic I'd say maybe you're transmission is going out, but not sure on a manual tran. These cars have crappy transmissions, especially the automatics, so I wouldn't rule out your tranny just cause it's a manual...

By "as if i was in too high a gear" mean that your engine revs up?? Could be your 2nd gear slipping. Just a thought. You might want to describe this "jumping" a bit more.

This post has been edited by simplecj: Apr 11 2008, 12:50 AM

imagine trying to start the car in 2nd or 3rd gear, the car will jump forward going to stale but it doesnt stale it will jump a few times untill you biuld up speed

thats what the jumping is like

Hi!

If u drive below 2000 rpm jumping is normal.

You need to:
Check or replace the sparks and eitherway set the gap exactly 1mm.
Clean or replace air filter.


bye

I guessing that your clutch is fully disengaging when you are on it. but is it fully engaging when closed? your brakes will only affect the vehicle if they are pumped, unless you have something binding (improper install or otherwise) even so it would be constant. do a test, take your car out and find a stretch, a good CLEAR mile and begin.
1.cycle engine, start by bringing to 2500 RPM and let off SLOWLY, inline fours do not appreciate the sudden drop in fuel when theyre going fast. start off in first, run in first gear to about 500-600 RPM above the shift light, then shift into second, take the car to full throttle until 4500 rolls up and listen for anything out of ordinary, third do the same, full throttle and onto fourth-fifth and then begin downshifting, use engine braking for the first 3 gears then slide to neutral and brake to a stop. shut off the car and simply step outside, smell for clutch, smell for brake, and write down where and what gear the trans jumped.

-if all else fails, check your engine mounts, maybe the bushing has rotted.


-Bob