bodhi_boyd
Probationary Member
- 24
- 0
- Jul 19, 2016
-
Olathe,
Kansas
down to the last check engine light on my 97 gst and its a P0300 random multiple misfire. I've been tracking this thing down for a while now and its got me scratching my head.
other pictures of the engine bay are in my profile, some of them are old and have been addressed (recirc)
list of things that have been addressed:
spark plug wires (import direct, orielly brand)
spark plugs changed often(bpr6es)
coil packs
power transistor
crank position sensor
performed boost leak test and has multiple leaks at the couplers.(currently working on them, i know they cause issues.)
recently did compression test and tested 160's across all cylinders
timing was recently corrected by a reputable shop, was 4 teeth off (i know)
catalytic converter was toast so instead of blocking flow i knocked it all out
special note would be the rpms.
most of the time they sit at 0 on the tach but when hooked up to a scanner the rpm value is at around 1k.
occasionally feels like a normal functioning vehicle but can go back to running like garbage at the drop of a hat.
have had it completely not start/die on me. guessing from the cold weather and low rpms.
resists acceleration big time when its running like that
here's a couple pics i took with the scan tool hooked up let me know if anything looks off. things that jumped out at me were the tps at 5% at idle and the O2 readings
other pictures of the engine bay are in my profile, some of them are old and have been addressed (recirc)
list of things that have been addressed:
spark plug wires (import direct, orielly brand)
spark plugs changed often(bpr6es)
coil packs
power transistor
crank position sensor
performed boost leak test and has multiple leaks at the couplers.(currently working on them, i know they cause issues.)
recently did compression test and tested 160's across all cylinders
timing was recently corrected by a reputable shop, was 4 teeth off (i know)
catalytic converter was toast so instead of blocking flow i knocked it all out
special note would be the rpms.
most of the time they sit at 0 on the tach but when hooked up to a scanner the rpm value is at around 1k.
occasionally feels like a normal functioning vehicle but can go back to running like garbage at the drop of a hat.
have had it completely not start/die on me. guessing from the cold weather and low rpms.
resists acceleration big time when its running like that
here's a couple pics i took with the scan tool hooked up let me know if anything looks off. things that jumped out at me were the tps at 5% at idle and the O2 readings
