hey my 1991 Mercury grand Marquis will not start, unless you spray starting fluid in the throttle body then it will, it will Idle (kinda high) and go down the road will no issues I can hear, when I turn it off I have to do it all over again, so far I have replaced the fuel pump, computer( from salvage yard), air temp sensor and coolant sensor, and fuel regulator, Even if I turn the key on 5 times then try starting I have no luck. I'm slowly losing hope, Stumped on it and getting closer to having someone look at, at a shop (I usually do my own work). Anyone have any Ideas????? Maybe tomorrow I'll try a new fuel filter even though I replaced it last year.