10-06-2013, 02:52 PM
howdy, I just bought a 97 Pontiac sunrunner 1.6 16v. ive been trying to repair an engine miss. it runs flawless at idle and pulls good to any gear or rev in neutral, to about 4300 rpm then the ses light flashes and the motor cuts out, it comes back on in an instant and misses again, if I hold the throttle down it will rev to 55oo+ at this point with all the missing the exhast smells pretty gasy. I tried to capture the miss on a live link dtc reader, but as soon as it misses the data stops. it has lost communication twice with the reader and is very slow to set up a link. ive installed new ngk wires and gapped the plugs. the issue disappears as soon as the revs drop below that 4300 mark and all is well.
as the miss is a complete 4 cyl non fire im looking at things common to all 4 cylinders, like bad crank sensor, ignition coil, etc. or could it be computer rebooting? only dtc logged was for p0400.
thx j
as the miss is a complete 4 cyl non fire im looking at things common to all 4 cylinders, like bad crank sensor, ignition coil, etc. or could it be computer rebooting? only dtc logged was for p0400.
thx j