Stimo82 Member 5 Member For: 13y 11m 22d Posted 22/03/11 02:34 AM Share Posted 22/03/11 02:34 AM I have a 08 fg xr6t ute and while doing around 110 with cruise control on the brake pedal is extremely hard to push in but it doesn't do it at lower speeds. Any help would be appreciated Link to comment Share on other sites More sharing options...
Wenier Donating Members 1,736 Member For: 15y 30d Gender: Male Location: Christchurch, New Zealand Posted 22/03/11 03:21 AM Share Posted 22/03/11 03:21 AM Really it should have the same feel all the time. The only thing I can relate that to is on the track with front brake shudder I could get in a situation where the pedal went hard and didnt really brake and the car shudder like it was going to fall apart. I think the disc was overheated but not the fluid as once cool it was fine again.So maybe your brakes are dragging a bit, hows your pad wear?Could be wrong thou. Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 25d Gender: Male Location: Perth Posted 22/03/11 03:27 AM Share Posted 22/03/11 03:27 AM Sounds like an old lumpy cammed V8 with no vacum reservoir.I'd suggest a trip too ford might be in order mate. Does it do it after you've been cruising @ 110 for a while or as soon as you hit that speed? Link to comment Share on other sites More sharing options...
Stimo82 Member 5 Member For: 13y 11m 22d Posted 22/03/11 03:30 AM Author Share Posted 22/03/11 03:30 AM It seems to do it after 10 - 15 mins at that speed. I've been to ford and they just seem to scratch their head and just kick the tyres hoping that will fix it I'm at a loss Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 25d Gender: Male Location: Perth Posted 22/03/11 03:42 AM Share Posted 22/03/11 03:42 AM Sounds like a vacum leak between the engine and booster, or a leaking booster. You cars not makin enough vacum cruising along @ 110+ KPH too keep the vacum assistance up.if you can identify the hose between the booster and engine check that for leaks./loose clamps. Also pump the pedal until the pedal goes hard with the car off, then hold your foot on the pedal and start the car the pedal should move down as you get vacum assistance. If you shut the car off and theres not assist theres a far chance the atmo valve on your booster is leaking Link to comment Share on other sites More sharing options...
Stimo82 Member 5 Member For: 13y 11m 22d Posted 22/03/11 04:14 AM Author Share Posted 22/03/11 04:14 AM Thanks very much for the help I'll give that a go today Link to comment Share on other sites More sharing options...
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