My brake pedal if firm when the motor is not running but when I start the motor the pedal is spongy. I bleed the brakes. Any ideas what it could be?

Asked by Oct 21, 2013 at 09:58 PM about the 2006 Lincoln Mark LT 4WD

Question type: Maintenance & Repair

2 Answers

10,575

How spongy, too spongy. When the engine is off the brake booster is not assisting you therefore the pedal is stiff. When running the booster helps you apply force to the brake cylinder and the pedal will move futher and more line pressure is created. Is the pedal traveling to far? Has the pedal movement changed? Has brake performance been effected.

1 of 1 people found this helpful.

r 7 r ed calipers .. pads...master cly & a b s valve no pedal when motor on booster o k .. good vacume bleed system 5 times no airin lines

Your Answer

Lincoln Mark LT Experts

  • #1
    John Leone
    Reputation
    140
  • #2
    John Don Menz
    Reputation
    50
  • #3
    Rowefast
    Reputation
    30
View All

Related Models For Sale

Used Ford F-150
2,229 Great Deals out of 182,698 listings starting at $1,500
Used Lincoln Navigator
93 Great Deals out of 5,094 listings starting at $1,900
Used GMC Sierra 1500
793 Great Deals out of 68,347 listings starting at $1,699
Used Chevrolet Silverado 1500
2,151 Great Deals out of 183,565 listings starting at $1,898
Used Cadillac Escalade EXT
31 Great Deals out of 673 listings starting at $4,900
Used Dodge Ram 1500
413 Great Deals out of 10,725 listings starting at $1,500
Used Toyota Tundra
442 Great Deals out of 33,895 listings starting at $1,999
Used Cadillac Escalade
214 Great Deals out of 11,092 listings starting at $2,888
Used Chevrolet Avalanche
182 Great Deals out of 4,797 listings starting at $1,999
Used Lincoln MKX
214 Great Deals out of 11,528 listings starting at $3,016
Used Lincoln MKZ
191 Great Deals out of 11,944 listings starting at $2,995
Used Ford F-250 Super Duty
350 Great Deals out of 43,660 listings starting at $1,250
Used Nissan Titan
196 Great Deals out of 19,538 listings starting at $2,300

Used Cars For Sale

2008 Lincoln Mark LT 4WD For Sale
11 listings starting at $12,995
2007 Lincoln Mark LT 4WD For Sale
16 listings starting at $12,800
2006 Lincoln Mark LT 4WD For Sale
3 Great Deals out of 104 listings starting at $5,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.