 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Nissan / Nissan Cars / May 2005brake Judder - ABS?
I have a Nissan Primera 1.6 sx. I have been getting a judder on the RH wheel as I come to a junction. I have replaced both the discs and the pads and am still having this problem. The only thing that I can think of now is that the ABS is somehow cutting in ( the effect is the same as when you brake on snow or ice and the ABS takes over. The brake failure light in the instrument panel is not lighting up to show any faults, Nor does any fault show up on the electronic diagnostics what I need to know is a.. has anyone else had this effect? b.. What could be the likely cause? c.. is there any part of the ABS system that needs greasing? d.. how can I test if the ABS is working correctly? would be grateful for any information as to how I can fix this fault many thanks in advance Jim Ward You should clearly hear the ABS pump motor running while driving if indeed the ABS is kicking in. My guess is that this is a very unlikely cause of your problem. Professor www.telstar-electronics.com > You should clearly hear the ABS pump motor running while driving if > indeed the ABS is kicking in. My guess is that this is a very unlikely > cause of your problem. > > Professor > www.telstar-electronics.com You'll also feel it through the pedal. You can test the ABS just by braking hard, with someone watching to be certain - they should be able to see the wheels "doing their thing". Is the vibrating in any way speed sensitive? ABS vibration is not. Andy >I have a Nissan Primera 1.6 sx. >I have been getting a judder on the RH wheel as I come to a junction. I have replaced both the discs and the pads and am still having this problem. The only thing that I can think of now is that the ABS is somehow cutting in ( the effect is the same as when you brake on snow or ice and the ABS takes over. The brake failure light in the instrument panel is not lighting up to show any faults, Nor does any fault show up on the electronic diagnostics [quoted text clipped - 6 lines] >many thanks in advance >Jim Ward ABS light should light when you switch ignition on and go out on starting, if it doesn't then you need to fix this (check and replace bulb and then circuit) before you can see a fault indication. Brake less hard so it doesn't trigger the ABS. Still happens even under light braking at any speed on good surface? Possible for the pickup on the wheel to lose the bit that protrudes by small object getting in and getting trapped between pickup and toothed ring (they corrode in so well that it's unlikely for the sensor have fallen out). Should have 0.275-0.75mm (0.0108-0.0295in) clearance to toothed rotor. As sensor still has winding connected it's not detectable as a fault. Something else that prevents pickup sensing toothed ring. The toothed ring has broken, fallen off, or someone fitted a hub without the ring. Poor earth on sensor shield causes incorrect tooth detection. Lose wheel bearing causes incorrect tooth detection due to wobble. Possible air in system. Bleed wheel cylinder then ABS. Check you have in excess of 12 volts when running. Thanks for the replies, some more information, if that can help you to help me. It only happens as I approach a junction or roundabout. It happens when i am going slow upwards from 5 - 10 miles / hour. even under good road conditions I can feel the vibration on the pedal as it happens, and hear the noise from the r/h frt wheel When it happens the brake pedal goes hard, The ABS light is working ok comes on with the ignition and then goes off as it should. I am not breaking hard enough to the ABS to kick in Many thanks for the suggestions I will try them out and try to sort the problem out. Meanwhile if the above info gives you any further help, It would be much appreciated. Thanks in advance Jim Ward Does this problem happen only on turns? Professor www.telstar-electronics.com > Thanks for the replies, some more information, if that can help you to help > me. [quoted text clipped - 15 lines] > Thanks in advance > Jim Ward only happens when approaching a junction or roundabout, there is a slight turning of the wheels as you would when approaching a junction. the wheel is never on a full lock > Does this problem happen only on turns? > [quoted text clipped - 20 lines] > > Thanks in advance > > Jim Ward I'm just wondering if your could have a problem with your velocity joints. Normally when they are worn... you hear noises and pehaps clunking (if they are really worn) when the front wheels are turned and moving. I suppose you could also have a differential problem if this noise is only on turns. I would certainly check the joints first... rather simple to do. Professor www.telstar-electronics.com > only happens when approaching a junction or roundabout, there is a slight > turning of the wheels as you would when approaching a junction. the wheel is [quoted text clipped - 27 lines] > > > Thanks in advance > > > Jim Ward |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.