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Jumping Idle

Tiny
SHAZAM5088
  • MEMBER
  • 1979 FORD THUNDERBIRD
  • 48,765 MILES
The idle on my car randomly jumps from 500-1200 at strange times. It can last several minutes or up to an hour. The it goes back to normal idle. No pattern to when or why this happens. The car has a 351M.
Thursday, May 23rd, 2013 AT 2:33 AM

3 Replies

Tiny
SINBAD271
  • MECHANIC
  • 169 POSTS
Has your car been serviced lately?
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Thursday, May 23rd, 2013 AT 5:30 AM
Tiny
SHAZAM5088
  • MEMBER
  • 2 POSTS
New cap, rotor, fuel filter, coil, plug, wires. It still jumps
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Thursday, May 23rd, 2013 AT 2:39 PM
Tiny
SINBAD271
  • MECHANIC
  • 169 POSTS
Check all vacuum hoses, make sure none are torn, split, or disconnected, check intake manifold gasket for a leak.
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Thursday, May 23rd, 2013 AT 8:32 PM

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