2005 Other Mercury Models puttering sound when i brake

2005 MERCURY
45,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
MYRAJ
  • MEMBER
  • 1 POST
The car shakes and putters when i brake or when slowing down and about to accelerate.

this happens intermittently and sounds as if the car will stall.
Aug 5, 2008 at 4:31 PM
Advertisement
Avatar
MERLIN2021
  • CERTIFIED EXPERT
  • 17,250 POSTS
You may have a vacuum leak, 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! If that doesnt do it, you may need a new idle air control valve, it's bolted to the throttlebody
Aug 5, 2008 at 4:38 PM