Puma Energy plans to convert the old KFC building on the corner of Clontarf Road and Carrington Street into a petrol station operating seven days a week.
It would be next to homes on its west side, with opposition centering around traffic modelling, lighting issues, pollution and odour, and space for the trucks.
There were also gripes with the plan for the station to operate around the clock, although Puma now plans to be open 6am to 10pm all week.
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READ NOWCity of Cockburn councillors at last week's meeting were expected to back the proposal following two previous refusals.
The second refusal in May pushed the application in the path of the State Administrative Tribunal for mediation.
But a late amendment made by a business owner in the adjoining lot to the north regarding a carriageway easement encouraged councillor Lyndsey Wetton to request for more time.
The deferral was also backed through deputations from the business owner and Puma Energy.
Marisa Leccese and Carmelina Pruiti have taken up the fight for residents, and they continued that on Thursday.
The pair argued the safety concerns were real and having a station so close to homes would negatively affect the amenity for residents.
As the main carer for her ill husband, Lesley Portelli (72), a resident who has lived at the home directly next to the site since she was 16, said she was not sure how much longer she could continue the fight against it.
"I just don't want them there," she said.
"Everything is going to be different."