DEMONIC1589

hey guys, new to the forum, i have a 1993 MUSTANG GT, i'm sure there might be a thread already about this problem but i have been unable to find it, but either way, problem i'm having is after i drive my car for a bit especially on a hot day, the car runs fine then seems like its not getting any fuel, starts poping and losing power, then it just shuts off, after a few mins i'll start back up and run for 2-3 mins and again start poping and shuts off, when i let her sit for awhile she starts up and runs fine, then after a bit same thing happens. it sounds like a back fire type pop. any help with this matter will be appreciated. i was told by a local foxbody owner, that it could be the lines to the fuel pump, that they are to skinny for the pump, and that i should replace them and it should fix the problem. so i'll be trying that on monday. but any other info please help.

dawson1112

TFI module on the distributor.

bluebeastsrt

I wouldn't replace the fuel lines. Check your fuel pressure at the schrader valve if you think it's fuel related. I would bet on the TFI module.

DEMONIC1589

tfi is new and not the fuel lines the wires that go to the top of the fuel pump (electrical)

DEMONIC1589

well forgot to list the mods it has done, has explorer gt40 uppper/lower, bbk shorties, underdrive pulleys, cai...going to put the stock alternator pulley back on, due to low voltage, and going to put stock Tb back on also. has a no name brand TB, i think its a 70mm, tbh i dont remember.

bluebeastsrt

The stock power supply to the pump is more than adequate. So the wiring going to the pump shouldn't be your problem. You can get a multimeter and check the voltage at the ECM. Should be close to 12 volts. Check with key on.

DEMONIC1589

cool, i'll check that out, and keep you guys updated

dawson1112

I highly doubt its fuel related, more likely ignition. PIP inside of dizzy or coil .

That popping is why I say ignition related, fuel related issues generally just cause it to bog down.

bluebeastsrt

I totally agree. 100 percent. It seams the op is set on checking for a fuel issue first. Once voltage is verified to the pump and pressure is verified from the pump. He can move on to the most likely problem. I'm still betting TFI.

dawson1112

Yea even though he says its new, I have seen more than my share of new TFIs fail.