QuestionQUESTION: I have a 94 s10 every time I try to stay at a consistent speed its starts back firing a little and slows down other days the more gas I give it it will bog down and almost die it will idle all day long with no problems I have changed spark plugs new wires pcv valve new vacuum house just on top of the motor and cleaned my egr valve. Also when I get to a half a tank if gas it seems to do it more often its a 2.2l 5 speed and my gas mileage is terrible right now
ANSWER: HI NATHAN,THIS SOUNDS LIKE A FUEL RELATED PROBLEM. SUCH AS WEAK FUEL PRESSURE,CAUSED BY POSSIBLY A BAD FUEL FILTER [PARTIALLY PLUGGED OR A BAD FUEL PUMP LOOSING PRESSURE. IF YOU HAVE A FUEL PRESSURE GAUGE CK TO SEE IF IT HAS ABOUT 35 LBS.IF YOU DO NOT HAVE A GUAGE THEN REPLACE THE FUEL FILTER ANYWAY AND HOPE FOR THE BEST. IF PROBLEM IS STILL THERE YOU WILL NEED TO GET THIS PRESSURE AND [VOLUME]CHECKED AT A SHOP ...HOPE YOU GET LUCKY AND IT IS JUST A FILTER PLUGGED..BEING THAT THIS HAPPENS AT THE SAME SPEED AND GET WORSE,SOUNDS LIKE A FILTER PROBLEM...HOPE THIS HELPS YOU,,,,,,,,,, TOM
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QUESTION: I just finished changing my fuel pump and fuel filter and still the same results could this possibly be a coil pack? Plus I keep failing emissions for high hydrocarbons I have already put near 300$ in this truck and am getting very frustrated please help
AnswerHI NATHAN,,DID YOU CK FOR FUEL PRESSURE ??? IF THE FUEL PRESSURE WAS OK I WOULD NOT OF REPLACED THE PUMP...HOWEVER NOW THAT THIS IS DONE WE CAN ASSUME THE FUEL PRSSURE IS OK. YOU ASKED COULD THIS BE A COIL PROBLEM YES,BUT WE ARE GUESSING.. I KNOW ALOT OF THE PEOPLE I GET ON THIS SITE LIKE TO FIX THERE CARS THEMSELVES BUT,THIS IS EXPENSIVE TO GUESS. I WOULD LIKE TO HELP YOU BUT IN THIS CASE IT MAKE SENSE TO TAKE THIS TO A SHOP THAT CAN SCAN THIS PCM TO CK FOR DATA.THIS WUILL BE MUCH CHEAPER THEN GUESSING..YOU MAY HAVE SOMETHING LIKE A SHORTED OXYGEN SENSOR CAUSING EXCESSIVE AMOUNT OF FUEL CAUSING EMISSION FAILURE AND SO ON..LET ME KNOW IF YOU GET THIS TRUCK SCANNED AND THEN WE CAN GO FROM THERE. WHEN I SAY SCANNED, I MEAN NOT JUST TROUBLE CODES,I WANT LIVE DATA TO SEE WHAT IS NOT IN CORRECT SPECS..MAP OR MASS AIR SENSOR,OXYGEN SENSORS AND SO ON..THEY CAN ALSO CK COIL OUTPUT FOR YOU AS WELL. LET ME KNOW ,,,TOM..
