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O2 sensor or vss

badkarma

Jr. Member
Joined
Aug 16, 2010
Messages
167
I have a 75 sport with stroked 347 with Holley avenger EFI And a c4.Intermittent issue have come to conclusion it is not fuel lines or pump. Never a issue at idle but when rolling the speedometer cuts to 0 then resets. Then motor cuts out immediately after needle jumps it then may run fine or just start jerking While cutting on off. If it dies it immediately restarts. The other may be a ground I have a painless harness. Thanks ��
 
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