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Tranny issues??

xparatroop501

New Member
Joined
Feb 15, 2014
Messages
41
Loc.
Olathe, KS
I just bought a 66 U13FL with a later model 289 and rebuild C4 from a 74 bronco with a B&M ratchet shifter. Engine runs and idles ok, but everytime I shift into Drive it dies. Anyone have any suggestions? I am new to the EBs so I am just at the beginning stage of learning.

Thanks in advance!
 

70_Steve

Old Guy
Joined
Dec 13, 2002
Messages
8,317
Engine runs and idles ok, but everytime I shift into Drive it dies. Anyone have any suggestions?
My first thought is a vacuum leak.

IF I remember correctly, idle speed will be around 700 in Park or Neutral, but you should shoot for 550 in Drive.If you get it to idle a 550 in drive but in Park the idle speed is way high, look for a vacuum leak.
 

Rustytruck

Bronco Guru
Joined
Feb 24, 2002
Messages
10,875
Idle speed in gear you need 650 to 700 rpm, out of gear in park or neutral close to 900. cold weather choke closed about 1100 rpm.
 
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