1995 t-bird 4.6 V8 190,000 miles car will stumble and sometimes stall in weather below 50 degrees or so. seems to do this when going from idle till you get over 1000 rpm but will run fine when idle until you put the car in gear and accelerate this problem will diminish when the car gets to operating temp. any help will be greatly appreciated.

I ASKED ABT SOME MORE SYMTOMS YOU MIGHT OF ENCOUNTERED. I HAD A 95 4.6L TBIRD THAT WUD STUMBLE ON THE ROAD, RPM GAGE WUD ACT ERRATIC AND SPUTTER WUD SHUTDOWN, IDLING AT STOP SIGN OR CROSSING A STREET THE CAR WUD HESITATE AND/OR SHUTDOWN, OR IT WUD REV ITSELF AND THEN SHUTDOWN OR GO BACK TO NORMAL. i never had a check engine light!
NOW THESE PROBLEMS WERE GOING OFF AND ON SPORADICALLY. CHANGED OUT VARIOUS PARTS, SENSORS AND EVEN HAD THE DEALERSHIP TROUBLESHOOT IT FOR A MONTH AND COULDNT FIND ANYTHING.

I CAME UPON THE PROBLEM BY LUCK. ANYWAYS IT TURNED OUT TO BE THE FREAKING WATER TEMP SENSOR HARNESS CONNECTOR FOR THE COMPUTER(this sensor had been replaced before). (4.6L had two water temp sensors. one for the dash gage and one for the computer)WIGGLING THE WIRE CONNECTOR WHILE AT IDLE, IT MANIFESTED ALL THE SYMTOMS ABOVE. I UNPLUGGED THIS CONNECTION FROM THE SENSOR AND THE COOLING FAN ENERGIZED (and run continously and also got a chk engine). THE CAR BEHAVED NORMAL AT IDLE. i DROVE THE CAR LIKE THIS FOR A MONTH AND NEVER EXPERIENCED THOSE SYPTOMS AGAIN. WAT I DID WAS CLEAN THE WATER TEMP SENSOR CONNECTOR. IT HAD SOME CRUD BUILD UP INSIDE. HOOKED UP THE CONNECTOR BACK TO THE WATER TEMP SENSOR AND FAN SHUT OFF AND NEVER EXPERIENCED ANY MORE PROBLEMS. THIS ENGINES WERE ALSO KNOWN TO STAY HOT ABOVE THE ENGINE DUE TO HOOD BEING SO CLOSE AND NOT LETTING AIR CIRCULATE. I HOPE THIS HELPS OUT.-GIL I ASKED ABT SOME MORE SYMTOMS YOU MIGHT OF ENCOUNTERED. I HAD A 95 4.6L TBIRD THAT WUD STUMBLE ON THE ROAD, RPM GAGE WUD ACT ERRATIC AND SPUTTER WUD SHUTDOWN, IDLING AT STOP SIGN OR CROSSING A STREET THE CAR WUD HESITATE AND/OR SHUTDOWN, OR IT WUD REV ITSELF AND THEN SHUTDOWN OR GO BACK TO NORMAL. i never had a check engine light! NOW THESE PROBLEMS WERE GOING OFF AND ON SPORADICALLY. CHANGED OUT VARIOUS PARTS, SENSORS AND EVEN HAD THE DEALERSHIP TROUBLESHOOT IT FOR A MONTH AND COULDNT FIND ANYTHING. I CAME UPON THE PROBLEM BY LUCK. ANYWAYS IT TURNED OUT TO BE THE FREAKING WATER TEMP SENSOR HARNESS CONNECTOR FOR THE COMPUTER(this sensor had been replaced before). (4.6L had two water temp sensors. one for the dash gage and one for the computer)WIGGLING THE WIRE CONNECTOR WHILE AT IDLE, IT MANIFESTED ALL THE SYMTOMS ABOVE. I UNPLUGGED THIS CONNECTION FROM THE SENSOR AND THE COOLING FAN ENERGIZED (and run continously and also got a chk engine). THE CAR BEHAVED NORMAL AT IDLE. i DROVE THE CAR LIKE THIS FOR A MONTH AND NEVER EXPERIENCED THOSE SYPTOMS AGAIN. WAT I DID WAS CLEAN THE WATER TEMP SENSOR CONNECTOR. IT HAD SOME CRUD BUILD UP INSIDE. HOOKED UP THE CONNECTOR BACK TO THE WATER TEMP SENSOR AND FAN SHUT OFF AND NEVER EXPERIENCED ANY MORE PROBLEMS. THIS ENGINES WERE ALSO KNOWN TO STAY HOT ABOVE THE ENGINE DUE TO HOOD BEING SO CLOSE AND NOT LETTING AIR CIRCULATE. I HOPE THIS HELPS OUT.-GIL