as stated it starts and then promptly stalls. so far i have removed and tested the TPS all good , removed maf cleaned and inspected removed idle bypass valve cleaned, appears to be working maybe ? also have good fuel pressure at all times. can you test idle bypass and maf with a multi meter if so how ?
this problem started as it would idle but not run , would brake down as you tried to rev the motor and then would go back to idle, now it will just starts and then stalls out and will restart and stall out again. i have used timing light to check that the spark is their all the time , sparks to the last turn so that indicates that it is most likely turning off the injectors . no alarms on the nano other than o2 sensor (yes it is a bit fumey) but was not a problem until now? dose the CPS turn off injection when faulty also can this be tested with multi meter. no alarms on dash or check engine light . it appears that my problem may be associated to something that turns off the fuel system. any help appreciated.
1998 4.0L GEMS