Check engine light making me crazy

Saltydawg56

New Member
Dec 26, 2018
3
0
1
64
San Diego Ca
I've put a 5.0 out of 91 Mustang in my 65 Ranchero, running a Painless harness deleting all smog pumps etc, I'm throwing a code #34 which according to my research is a EGR issue, well, I have deleted the EGR valve with block off plate and the circuit plug, the car runs fine but this check engine light is making me crazy, also, the light goes out during acceleration but comes back on as soon as I back off the throttle, any help from the gurus????
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Saltydawg56

New Member
Dec 26, 2018
3
0
1
64
San Diego Ca
Its fully seated, it's actuallythe second one I've tried, got it a CJ pony I believe, the first one on ebay so thought I'd give a more reputable one a shot, with no change. Whats baffling to me is that the light goes out under acceleration