98 mustang cobra

66StangGuy · 12-02-2002, 12:05 AM

my friends 98 mustang cobra.. mostly stock except gears. anyway when he tries to start the car it wont start. were assuming its a fuel problem, if you turn the key off and then to the on posistion a few times 3 or 5 then try to start the car it will run for about 3 minutes then it starts to die out. sound like it has a miss but i think its lack of fuel pressure, eventually after stumbiling for 1 minute or so it stalls out and stops and wont start agian untill we mess with the key.

my other question would be could this be a computer issue.. i know that when the motor is running cold it runs rich and idels higher. i was wondring if the computer was going into lean condition and causing this problem. is there a way i can trick it into thinking the motors cold ans see if this helps.. other then pull the wire to the sensor cuz i figured that but i didnt get a chance to mess with anything much yet.

anyone have any ideas to help figure it out. also theres a new fuel pump..pickup and i checked codes...it reads that the o2 sensors are bad but could that be because of the lean condition from the computer? or is this a faulty fuel pump. thanks guys

12-02-2002, 12:05 AM	#1
66StangGuy Registered Member Join Date: Feb 2002 Location: Diamond Bar Posts: 258	98 mustang cobra my friends 98 mustang cobra.. mostly stock except gears. anyway when he tries to start the car it wont start. were assuming its a fuel problem, if you turn the key off and then to the on posistion a few times 3 or 5 then try to start the car it will run for about 3 minutes then it starts to die out. sound like it has a miss but i think its lack of fuel pressure, eventually after stumbiling for 1 minute or so it stalls out and stops and wont start agian untill we mess with the key. my other question would be could this be a computer issue.. i know that when the motor is running cold it runs rich and idels higher. i was wondring if the computer was going into lean condition and causing this problem. is there a way i can trick it into thinking the motors cold ans see if this helps.. other then pull the wire to the sensor cuz i figured that but i didnt get a chance to mess with anything much yet. anyone have any ideas to help figure it out. also theres a new fuel pump..pickup and i checked codes...it reads that the o2 sensors are bad but could that be because of the lean condition from the computer? or is this a faulty fuel pump. thanks guys __________________ 66 mustang-292-Holley 4160-World Castings Windsor Sr.-Hooker super comp headers-MSD box & Coil.3.55 gears. B&M Z-Gate-Black leather racing seats with 4pt harnes.

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