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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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AE101 4A-GZE ignition timing issues. Timing doesnt change going from DIAG mode to normal operation!
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Tue, 30 November 2004 13:06
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as per usual this is probably some really simple stupid oversight of mine or i'm just horribly worried for no reason....
With the 4A-GZE --> turbo AE101 conversion im doing, i now have everything running and working OK... but having problems with the ignition timing.
Here's the point form of whats happened:
# Currently set up as smallport gze with 100kW intake, exhaust, alternator, PS pump and aircon (ps/aircon belt removed for now). Of course complete Ae101 gze electrics are in place
# Got engine started, ran ok so i took it to exhaust shop to get exhaust welded on.
# Get home tonight
# Put ECU into DIAG mode by shorting Te1 and E1, then starting motor
# Took note of fault codes 51, 21, 24
# With engine still running and at operating temp, set ignition to 10deg BTDC
# Turn off engine.
# Remove wire shorting Te1 and E1
# Start engine
# Check ignition timing - is STILL 10deg BTDC!!!!. so turn off engine
# Put ECU back into DIAGNOSTIC mode
# start up and again set ignition timing to 10deg BTDC
# remove the short whilst engine running, and checked timing
# STILL 10deg BTDC!!!!! :angry: :angry:
Now this is a serious problem to me!!!!!
On the smallport 4A-GE in my AE71, following the above when i removed the short, the ignition timing automatically JUMPED up to about 20-30deg BTDC. This is normally how you check that the ignition timing control in the ECU is working, AFAIK.
can anyone shed any light or experiences my way??
FYI = codes are for O2 sensor (not connected yet), THA (air intake temp - also not installed yet) and A/C switch (also not connected). Otherwise i havent yet seen any other codes. I only got these codes whilst the car was running. I will attempt the non-starting DIAG mode in the morning or something.
[Updated on: Tue, 30 November 2004 13:11]
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