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dont understand why my car dramtically speeds up and then slows down at idle

Started by 440charger68, October 29, 2009, 02:15:17 PM

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440charger68

it sounds like a vacuum leak, but its a 68 charger 318 and it use to idle great but now just today the idle dropped extremely low when i was driving it then it would idle real high. in park it has a steady idle at first then it pulsates to a high rpm then back down to a low rpm anyone know the problem??? :shruggy:
life's a garden, dig it.

idahogrumpy

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GRUMPY
Modified 73 440 Charger, 03 Intrepid SXT, 02 Neon and 2001 Ram 1500 .

440charger68

yea i found it haha the hose for my vacuum lines for the head light door came undone :rotz:
life's a garden, dig it.

BrianShaughnessy

Quote from: 440charger68 on October 31, 2009, 02:31:19 PM
yea i found it haha the hose for my vacuum lines for the head light door came undone :rotz:

Was it the 1/4" vacuum line to the vacuum can under the battery from the intake?     Mine got soft and fell off the other week. 
I think I need something better than the soft line that came on the repro hose set.
Black Betty:  1969 Charger R/T - X9 440 six pack, TKO600 5 speed, 3.73 Dana 60.
Sinnamon:  1969 Charger R/T - T5 440, 727, 3.23 8 3/4 high school sweetheart.