02-09-2014, 09:17 AM
No scope yet - but an update:
1st: The purge solenoid - I recently replaced a "clicky" one with a junkyard one. Junkyard one doesnt click but as it turns out... it doesnt work either. You can blow right thru it, hence the leak. I replaced the "new" one for the old one that clicks on RPM rise, and no longer does pinching that hose affect idle.
2nd: Went to pull the clay out of the IAC port and dropped a chunk into the IAC - oops!
So I pulled the TB, recovered the clay and bench calibrated the TPS.
Put it all back together and the TPS was reading 5V at pin 2 on idle. By the time I figured out that I just re-installed the throttle cable wrong, TPS now at 0V idle - the engine had warmed and the ISC pinch test and connector removal worked! So - my initial "on car" tps calibration wasn't quite right like I thought it was.
TPS now calibrated for sure - its cooling down now and once the ECT shows truly cold, I'll time the re-start and see if anything changed.
1st: The purge solenoid - I recently replaced a "clicky" one with a junkyard one. Junkyard one doesnt click but as it turns out... it doesnt work either. You can blow right thru it, hence the leak. I replaced the "new" one for the old one that clicks on RPM rise, and no longer does pinching that hose affect idle.
2nd: Went to pull the clay out of the IAC port and dropped a chunk into the IAC - oops!
So I pulled the TB, recovered the clay and bench calibrated the TPS.
Put it all back together and the TPS was reading 5V at pin 2 on idle. By the time I figured out that I just re-installed the throttle cable wrong, TPS now at 0V idle - the engine had warmed and the ISC pinch test and connector removal worked! So - my initial "on car" tps calibration wasn't quite right like I thought it was.
TPS now calibrated for sure - its cooling down now and once the ECT shows truly cold, I'll time the re-start and see if anything changed.