ECOTEC v6 on 808 ecu

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robkeith
Posts: 23
Joined: Tue Jan 06, 2015 6:25 pm

Re: ECOTEC v6 on 808 ecu

Post by robkeith »

Hi Vlad,

understand what you are saying but i travel that route regularly and only recently have had an issue, hence suspect lean out, will need to check fuel pressure whilst driving, alternatively possible faulty ignition module?
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vlad01
Posts: 7780
Joined: Mon Oct 08, 2012 6:41 pm
cars: VP I S
VP I executive
VP II executive
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Location: Kyneton, Vic

Re: ECOTEC v6 on 808 ecu

Post by vlad01 »

ignition you get very notifiable shudder/bucking and more than often crackling/backfiring exhaust. A lean condition is possible but usually you get a code for "lean condition" which should give 44 but it may not be lean enough or even entering closed loop to trigger any code that relates to that.

I wouldn't bother until you get the gear and sus it out in TP, its all guess work otherwise. You need a wideband o2 as well. I recommend the 14point7 spartan 2.

here is the list of codes.

12 No spark pulses at CPU or else good system, no codes
13 Oxygen sensor output remained at .35-.55 volts for more than one
minute after warmup. Possible open circuit.
14 Coolant sensor indicated a temperature above 130C for 3 seconds
after engine ran for 20 seconds. Probably a short
15 Coolant sensor indicated a temperature below -30C for 3 seconds
when MAT > - 13 or engine running over 1 minute. Probably open
circuit
21 Throttle pos sensor above 2.5 volts for 2 seconds when engine
speed below 1600 rpm
22 Throttle pos sensor below .2 volt for 2 seconds while engine running
23 MAT sensor shows < -30 degrees C for 3 seconds after engine
running 1 minute or coolant > 30C. Probably an open circuit.
24 No speed sensor pulses when engine between 2000-4000 rpm,
throttle closed, high vacuum, not in neutral and all for 5
seconds
25 MAT sensor showed above 145 degrees C for 2 seconds after
engine ran for over 1 minute. Possible short circuit.
31 Unknown Error Code
32 Unknown Error Code
33 MAP sensor voltage too high (> 4.00 v). Possible vacuum leak to
sensor or faulty sensor.
34 MAP sensor voltage too low (< 0.25 v) with ignition on or
engine running >1200 rpm and throttle open >20%
35 Closed throttle idle speed is more than 75 rpm above or
below correct value for more than 45 seconds
41 No Crankshaft reference pulses. Ignition voltage < 11 volts etc.
42 Open or short on EST or BYPASS line to ignition module.
43 Engine Knock Sensor open or shorted.
44 O2 sensor showed < 0.250 volt for over 20 seconds while
operating closed loop
45 O2 sensor showed > 0.550 volt for over 50 seconds while in
closed loop with engine running over 1 minute and throttle open
more than 2%
51 Check insertion of MEMCAL in socket and bent pins.
52 Check that CALPAK is in place, fully inserted, and no bent pins
53 Car's alternator has produced >17.1 volts for over 2 seconds.
Check charging system
54 Unknown error code
55 ECU A to D error. Check ECU grounds, or excessive input voltage

I just copied this from another site, I did noticed 31 is listed as unknown. Its open MAT sensor from memory
I'm the director of VSH (Vlad's Spec Holden), because HSV were doing it ass about.
robkeith
Posts: 23
Joined: Tue Jan 06, 2015 6:25 pm

Re: ECOTEC v6 on 808 ecu

Post by robkeith »

thanks Vlad, only codes iv seen are 24 & 45 which i put down to trying to auto calibrate the LPG computer, which requires 3000 RPM for an extended period whilst in park. have since reset the ECU and will look for other codes in the next few days, have made up an interface cable to connect to ECU via the aldl plug and when the usb-RS232 connector arrives oi will have a look at the outputs if all works! previously have tried to get tec1 to talk to the ECU without success (connected OK but couldnt download info?)

Thanks for the error codes, i had this already but wasnt aware of the 31 code
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