2004 Dodge Neon RPM increases when I press brakes

87,600 MILES • 4 CYL • FWD • AUTOMATIC
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RFMM1
  • MEMBER
  • 1 POST
Hi,

I have a 2004 Dodge Neon which was just serviced by the dealer. Since I got it back, the rpm increases by about 200-500 revs when I press the brakes to stop. So say RPM at 1200 when I press brakes, then RPM goes up to 1500-1700 even though I didn't press the accelerator, then I press brake a couple times to stop and RPM goes back to 900.

This does not happen when the engine is cold, happens only when engine temperature reaches normal.
Feb 6, 2009 at 2:48 PM
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BLUELIGHTNIN6
  • ✓Experienced Mechanic
  • 16,542 POSTS
You either have a cracked or loose vaccum line to brake booster or the brake booster itself is bad. Since this occured right after repairs, I would suggest inspecting the brake booster vacuum hoses first.



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Feb 6, 2009 at 2:53 PM
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