2002 Ford Focus

2002 FORD FOCUS
104,000 MILES • 4 CYL • 2WD • AUTOMATIC
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TLINNEN
  • MEMBER
  • 1 POST
my car is shaking hard while it is idle and when i punch the gas pedel while in park the cars engine is strong. But when i take the car off park and try to press the break is still locked like engine is off. What is happening with my car?
May 30, 2008 at 1:57 PM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
Either the brake vacuum booster's diaphram is bad, the check valve is bad, or the hose to the booster or other major vacuum source is leaking...get a can of spray gumout, spray the vac lines and maniflod area, when the idle changes, youve found the leak! You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs!
May 31, 2008 at 12:20 AM
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