why dosen't may car start when going from heated o2 4wire back to stock 1 wire

[bpman1234]

yea got this motor with heated 02kit i got a code 13 and could not get ed t crank it my millivolts up to the 777-790 it stays at about 500-539 no higher when turning the fuel reg up i can see the fuel bpresser go up on the guage but no change on my scanmaster withmillvolts .so i tried o go ack to stock 1 wire and the car just cranks but doesnt start .i only tried to crank it twice for about 3-5 seconds.so went back to the wire and it starts .help would be greatly appreaciated thaks

 

[granatl]

Cars start in open loop mode (i.e. they don't use the signal from the O2). So, your issue doesn't make sense to me. Could it be that you knocked a wire loose elsewhere?
Code 13 = Oxygen Sensor Circuit Open

 

[bpman1234]

ok gonna check all my wires .

 

[bpman1234]

hey granatl you were right my negative wire from bat to chassie was very frailed i hookedup a fat ground from bat to chassie just to see and bam.fired right up i new it was alittle suspect but i had check ground everywhere on the car and a was getting it even inside but i guess it wasint solid enough .that goes totell you on these cars grounds you first suspect .when something going wrong .but now i am getting 90 on my bl readings i know its has to be 100-150.under accceleration it hesitates or pops i tink if i fix the block lean i fix that problem.do you have any ideason that please reply so close .its been 2 years since i kicked somones ford or chevy with my little six.thanks in advance