Get on wet grass, grass or dirt and lock up brakes. Check the skid marks to see if both circuits of the master cylinder are working or if all wheels are braking. This will also activate the antilock which may help if there is air in it but not a replacement for proper bleeding.
Check the rear brakes for bad calipers or frozen pins. There is much more braking on the rear wheels with the more even weight distribution of modern rwd cars. Check front calipers for the same. Check what other posters have mentioned.
Check the rear brakes for bad calipers or frozen pins. There is much more braking on the rear wheels with the more even weight distribution of modern rwd cars. Check front calipers for the same. Check what other posters have mentioned.
