hey guys wanted to pick the brains of this great group of triumph folk. I just purchased a 1999 955I daytona stock ECU tune and a high mount carbon fiber exhaust and have some problems with what I think has to do with either the injectors or the ECM.
When I first start the bike it will start and Idle ok but runs rough and shuts down after 30 seconds or so of idling. It also will shut off the instant I open the throttle the tiniest bit. So to me it seems like I am not getting enough fuel. I have checked and made sure all the IACV hoses are in good condition and in the correct locations, made sure the IACV valve is moving using TuneECU. The only codes I get from TuneECU are a PO113 Inlet Air Temperature Sensor Open Circuit or Short Circut to battery and a PO105 Barometric Pressure Sensor Circut Malfunction. I am guessing I got those codes from having the air box off and disconnected with the key on. Checked and verified I had good spark on all 3 cyclinders. The Fuel pump runs with the key on. I also disconnected the return line and held the valve open on the male plastic fitting and was getting a constant flow of fuel out the return line.
What I tried next is what baffles me. I figured I would pull the injectors to see if they were clogged. They looked to be in good condition and were not dirty or plugged with crud. I re attached them to the fuel rail and hooked everything back up. When I crank the bike over with the fuel rails sitting on a towel I get a nice spray from the injectors with the throttle closed. As soon as I touch the throttle while cranking in any way the injectors stop injecting instantly. If I shut the throttle again they resume injecting. So my question is this. Why are the injectors injecting fuel at idle but not when I give it throttle? Does this have to do with the TPS sensor? Or is it a function of the ECM? When I had TuneECU hooked up to it and rotated the throttle I get a voltage of about 4.3v to 4.5v at wide open throttle and it shows about 80% on the guage on screen. I suspected that was normal and that the TPS was fine. Do I need to reset it? I might be thinking wrong but is there a function on the ECM that shuts off the injectors during cranking if the throttle is opened? should I try to reflash the ECM to a different Map? I am not sure which one to use out of TuneECU and I don't want to grab at straws changing maps. I have been chasing this thing for weeks and reading in the forums for answers but it seems like no one else had this problem before. Any help or answers to my above questions is greatly appreciated. this is my first triumph and I would love to get this thing back on the road.
When I first start the bike it will start and Idle ok but runs rough and shuts down after 30 seconds or so of idling. It also will shut off the instant I open the throttle the tiniest bit. So to me it seems like I am not getting enough fuel. I have checked and made sure all the IACV hoses are in good condition and in the correct locations, made sure the IACV valve is moving using TuneECU. The only codes I get from TuneECU are a PO113 Inlet Air Temperature Sensor Open Circuit or Short Circut to battery and a PO105 Barometric Pressure Sensor Circut Malfunction. I am guessing I got those codes from having the air box off and disconnected with the key on. Checked and verified I had good spark on all 3 cyclinders. The Fuel pump runs with the key on. I also disconnected the return line and held the valve open on the male plastic fitting and was getting a constant flow of fuel out the return line.
What I tried next is what baffles me. I figured I would pull the injectors to see if they were clogged. They looked to be in good condition and were not dirty or plugged with crud. I re attached them to the fuel rail and hooked everything back up. When I crank the bike over with the fuel rails sitting on a towel I get a nice spray from the injectors with the throttle closed. As soon as I touch the throttle while cranking in any way the injectors stop injecting instantly. If I shut the throttle again they resume injecting. So my question is this. Why are the injectors injecting fuel at idle but not when I give it throttle? Does this have to do with the TPS sensor? Or is it a function of the ECM? When I had TuneECU hooked up to it and rotated the throttle I get a voltage of about 4.3v to 4.5v at wide open throttle and it shows about 80% on the guage on screen. I suspected that was normal and that the TPS was fine. Do I need to reset it? I might be thinking wrong but is there a function on the ECM that shuts off the injectors during cranking if the throttle is opened? should I try to reflash the ECM to a different Map? I am not sure which one to use out of TuneECU and I don't want to grab at straws changing maps. I have been chasing this thing for weeks and reading in the forums for answers but it seems like no one else had this problem before. Any help or answers to my above questions is greatly appreciated. this is my first triumph and I would love to get this thing back on the road.