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17-10-2013, 06:50 PM | #91 | ||
5.6L x 2 pilot
Join Date: Dec 2009
Location: Canbra
Posts: 15,088
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My guess without seeing the software or the hardware, is that this data you are seeking will vary between ECUs or families of ECUs. With my Quarterhorse tuning, I rely on a strategy file - which is effectively a memory map between the software and the ECU memory locations of each PID. Strategy files vary between the different ECU families, so my guess, no one database, if it existed will cover all ECUs and PIDs.
For the sake of $10, I have bought a ELM327 to check it out. I know my tuning software has the ability to report OBDII functionality which requires a strategy loaded. I will report back when and if I can find out more when my scanner turns up. Cheers Stu
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2002 AU II LTD 5.6L 342ci T3 Short, AFR165 heads, Comp XE270HR-12 Cam, Brembo 4/4s(355/330), T3 5 spokes, LC-1 wideband, Whiteline HD swaybars, TCE 3K Hi Stall, PWR Auto Trans Cooler, Koni shocks, King Low Springs, Hurricane headers, 100 cpsi cats, Twin 2.5" exhaust. Quarter Mile: 13.73 @ 105.86mph Runner Up NA/DA to BF Fairlane/LTD Geelong AFD 2024 2002 XR8 pursuit 250 Custom twin 2.5" exhaust w Herrod modifed extractors, Tuned with Moates QH
Last edited by auIILTD; 17-10-2013 at 06:53 PM. Reason: addinfo |
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17-10-2013, 07:10 PM | #92 | |||
Auto Nerd
Join Date: Feb 2012
Location: Sydney
Posts: 808
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Quote:
Normal narrow band O2 sensors will switch above 0.5v and below 0.5v in closed loop. The reason they switch is that the computer will adjust the pulse width of the injectors once it receives a signal from the o2. <0.5v equates to lean and >0.5v for rich. It switches from rich to lean in order to obtain the ideal stoichiometric. This would be the first sign of life when inspecting the o2. To check o2 response, pull a vacuum line somewhere. You want to see voltage drop towards zero. To check computer response, you will need to identify the signal wire of the o2. There will be 2 heater wires reading battery voltage and a ground that should be <100mv. This will leave the signal wire. By using a test light, jump battery ground to the signal wire to simulate a lean signal. You should hear a change in RPM as the computer tries to add extra fuel to the mix. Hope this helps. |
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17-10-2013, 07:23 PM | #93 | ||
5.6L x 2 pilot
Join Date: Dec 2009
Location: Canbra
Posts: 15,088
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Great post Evgeni.
Further to that, I have read that the reason the ECU will swing the mix rich to lean is to maintain the functionality of the catalytic converters. They go rich/lean to maintain the oxygen levels outputted. The swing will only go rich or lean by about 3% from stoich. Those with a ELM327 and Forscan will see this in their Short term fuel trims at idle. Cheers Stu
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2002 AU II LTD 5.6L 342ci T3 Short, AFR165 heads, Comp XE270HR-12 Cam, Brembo 4/4s(355/330), T3 5 spokes, LC-1 wideband, Whiteline HD swaybars, TCE 3K Hi Stall, PWR Auto Trans Cooler, Koni shocks, King Low Springs, Hurricane headers, 100 cpsi cats, Twin 2.5" exhaust. Quarter Mile: 13.73 @ 105.86mph Runner Up NA/DA to BF Fairlane/LTD Geelong AFD 2024 2002 XR8 pursuit 250 Custom twin 2.5" exhaust w Herrod modifed extractors, Tuned with Moates QH
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17-10-2013, 08:15 PM | #94 | ||
Regular Member
Join Date: Oct 2011
Location: Mildura
Posts: 357
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Thanks heaps Stu and Evgeni.
My readings were between 1.7 and 1.74 in closed loop, so something's definitely a miss there by the looks. Way rich. I'll do the more thorough testing Evgeni suggested and stop hijacking this thread!
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Current: 2000 AUII XR8 manual ute. 1966 XP Pursuit ute. 2012 Honda Euro manual (daily drive) Past: 1984 XE Falcon sedan 4.1L. |
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17-10-2013, 08:22 PM | #95 | |||
5.6L x 2 pilot
Join Date: Dec 2009
Location: Canbra
Posts: 15,088
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Quote:
I don't believe we are thread jacking. We are discussing the output you see from the scantool. Cheers Stu
__________________
2002 AU II LTD 5.6L 342ci T3 Short, AFR165 heads, Comp XE270HR-12 Cam, Brembo 4/4s(355/330), T3 5 spokes, LC-1 wideband, Whiteline HD swaybars, TCE 3K Hi Stall, PWR Auto Trans Cooler, Koni shocks, King Low Springs, Hurricane headers, 100 cpsi cats, Twin 2.5" exhaust. Quarter Mile: 13.73 @ 105.86mph Runner Up NA/DA to BF Fairlane/LTD Geelong AFD 2024 2002 XR8 pursuit 250 Custom twin 2.5" exhaust w Herrod modifed extractors, Tuned with Moates QH
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17-10-2013, 09:22 PM | #96 | ||
Auto Nerd
Join Date: Feb 2012
Location: Sydney
Posts: 808
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When you get readings outside of the set parameters, it can be useful to backprobe the sensor directly. With the ELM you are seeing what the computer sees as opposed to what the output of the sensor is, in the case that there is a discrepancy in the wiring.
1.7v may represent a partial short to power on the heater circuit for example. Should this be the case, you can probe the sensor side of the harness with the harness to the o2 unplugged. The zirconium element in the o2 produces its own voltage, so you can eliminate any effects from other power sources. Anyway, just a theory. |
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17-10-2013, 09:30 PM | #97 | |||
5.6L x 2 pilot
Join Date: Dec 2009
Location: Canbra
Posts: 15,088
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Quote:
Stu
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2002 AU II LTD 5.6L 342ci T3 Short, AFR165 heads, Comp XE270HR-12 Cam, Brembo 4/4s(355/330), T3 5 spokes, LC-1 wideband, Whiteline HD swaybars, TCE 3K Hi Stall, PWR Auto Trans Cooler, Koni shocks, King Low Springs, Hurricane headers, 100 cpsi cats, Twin 2.5" exhaust. Quarter Mile: 13.73 @ 105.86mph Runner Up NA/DA to BF Fairlane/LTD Geelong AFD 2024 2002 XR8 pursuit 250 Custom twin 2.5" exhaust w Herrod modifed extractors, Tuned with Moates QH
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10-12-2013, 12:10 PM | #98 | ||
Starter Motor
Join Date: May 2009
Location: Sale, VIC
Posts: 9
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Adding to this, I have an AU3 XR6 (VCT, Manual). Have connected a bluetooth ELM327 and logged some data to see why it's running crap and using too much fuel.
Getting some weird values, up to 2.8V on o2 (same with new sensor) and 10 degrees C on the ECT. Does not seem to go into closed loop, and long term fuel trim is at 0% (because it isnt in closed loop ever I assume?) Is anyone else getting weird spikes / errors on their oscilloscope in ForScan? Have replaced the o2, leads, coil, air filter, VCT solenoid, oil, checked earths (were bad, cleaned them up). Other values like MAP and IAT, spark advance, all seem OK, or at least in the ballpark.
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11-12-2013, 02:14 AM | #99 | ||
FF.Com.Au Hardcore
Join Date: Apr 2005
Location: Geelong, VIC
Posts: 5,267
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From your data, it looks like the head temp is 100degC but your engine coolant temp(ECT) is 9degC. I think there is your problem, either ECT sensor is faulty, or wiring from sensor to ECU is faulty.
Hmm then again, Im not sure where the coolant sensor is on the AU's. What does your temp gauge on the dash read? Is it normal? or does it always read low temp? I believe the ECT value needs to be closer to normal engine temp (80-93degC) for ECU to enter closed loop mode. On the BA, I've had the thermostat stuck open, causing engine temp to stay cool and use more fuel. Might pay to check thermostat. Good luck. Last edited by baboon; 11-12-2013 at 02:26 AM. |
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11-12-2013, 08:58 AM | #100 | ||
Starter Motor
Join Date: May 2009
Location: Sale, VIC
Posts: 9
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Cheers, yeah it seems Cylinder Head Temperature is the ECT in this case, had my stuffed for a while.
Forscan seems to be playing up, put the calculations into Torque pro last night and it gets good values. The dash gauge is perfect, never goes above 1/3 to 1/2 really. I have to do some more diagnosis I think. It had a corroded earth clamp, but after fixing it theres been no change.
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11-12-2013, 10:33 PM | #101 | ||
Auto Nerd
Join Date: Feb 2012
Location: Sydney
Posts: 808
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The temp sensor is in the back of the cylinder head on the drivers side and is pretty tight for access. If you need to access voltages, go to the tech resources and there is a pin out map for the electrical connector that is between the 5th and 6th intake runner. Makes life much easier.
Anyway, I get the same discrepancies on forscan. I believe it comes down to the sampling rate of the program and/or the programs ability to plot numeric values on a graph. The long time base in the scope facility is also not very useful. Look at the injector pulse width for example. This should be a digital square wave - an on/off signal and what you have is something that is far from that. The graph function will work for something like a tps, but anything quicker than that, which is pretty much everything else on the car, I would question the accuracy. Don't want to be critical though - It is still a fantastic tool for reading codes, but there has to be some limitations when you are trying to look at something that exists from milli second to milli second. |
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23-03-2016, 10:50 PM | #102 | ||
Starter Motor
Join Date: Apr 2014
Location: Earth
Posts: 17
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After reading this, i bought the ELM327 and downloaded Forscan but am unsure how to use them.
-What is the exact procedure for connection to the car/computer? -Once connected, do i turn the Key to IGNITION? -How do you use Forscan? (what steps do you use to get the best info? How do i save that info?) -How do i translate that info into usable information to sort out my car? Many thanks. Any and all advice greatly appreciated.
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Laser Beam |
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24-03-2016, 09:27 AM | #103 | ||||
Starter Motor
Join Date: Feb 2013
Posts: 4
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Haven't used mine for a while, but here goes.
Quote:
Quote:
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14-04-2016, 02:20 PM | #104 | ||
Starter Motor
Join Date: Apr 2014
Location: Earth
Posts: 17
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Cool. Cheers for the help. I carried the PC to the car and plugged it all in.
But I get an error message saying that the ELM327 is a 'clone' and it will not work. Can anyone tell me where to buy an ELM327 that will work for the AUII? Every seller I ask says the ELM327 won't work on my car, but clearly it does as you guys are using it. If you guys have a 'link' to the place where you bought your working ELM327, that would be bloody great. Cheers. They all look the same to me. I can't use a wireless one as im using a PC. Many thanks. P.S. I bought my ELM327 v1.5 from ebay, just like the link posted here before. It came with a little disc that gave my PC 2xViruses. I got the drivers from the manufacturer and they seem to work well. Forscan starts up and gives me a couple of 'Good to go' ticks, then it says the ELM327 is a clone and it can't do anymore for me.
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Laser Beam Last edited by LaserBeam; 14-04-2016 at 02:27 PM. |
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15-04-2016, 01:24 PM | #105 | ||
Irregular member
Join Date: Dec 2004
Location: Melbourne
Posts: 3,941
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I've got a clone/generic ELM327 also and I downloaded and installed these 4 drivers, it all worked fine:
http://www.totalcardiagnostics.com/s...-obd2-software
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2000 AU II FAIRLANE 75th ANNIVERSARY - big and shiny My hovercraft is full of eels! Movie Car Chase of the Week: Gene Hackman driving a 1971 Pontiac LeMans to chase an elevated train in The French Connection (1971). |
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22-04-2016, 12:32 AM | #106 | |||
Starter Motor
Join Date: Apr 2014
Location: Earth
Posts: 17
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Quote:
Cheers mate. I downloaded those 4 drivers about 10 seconds before seeing your reply. Happy they worked for you. Glad i'm on the right track. Keen to hook up the car to my PC. It's gonna be cool.
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Laser Beam |
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22-04-2016, 10:53 AM | #107 | ||
Regular Member
Join Date: Sep 2015
Posts: 66
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I'm trying to diagnose an ABS warning light, but can't seem to find a 'Brakes' section in Forscan? I've tried cleaning the ABS sensors, but would rather work from specific codes than just throw money/parts at it without knowing what's broken.
Am I missing something or looking in the wrong part of the program?
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Jeff '99 AU1 Fairlane |
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25-04-2016, 12:55 PM | #108 | ||
Regular Member
Join Date: Jan 2006
Posts: 454
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Faults codes will be displayed on the DTC screen
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BUILD AU II FAIRMONT GHIA HERS AU II Fairmont Ghia 7" DVD/GPS Radio 19" Wheels HIS FG XR8 Ute Lux Pack Tech Pack Touch Screen GPS |
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22-05-2016, 06:23 PM | #109 | ||
🚫⏰4️⃣🐃💩
Join Date: Sep 2012
Posts: 1,901
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So all I need to scan for fault codes on any AU (I, II and III) is a ELM 327 mini Bluetooth OBD2 adaptor, and FORScan Lite for Android and I should be able to read codes on my phone? Just checking.
Will both these also work with 2002 Ford Laser SR2 (Mazda 2.0 FSDE motor)? |
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22-05-2016, 06:57 PM | #110 | |||
5.6L x 2 pilot
Join Date: Dec 2009
Location: Canbra
Posts: 15,088
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Quote:
Cheers Stu
__________________
2002 AU II LTD 5.6L 342ci T3 Short, AFR165 heads, Comp XE270HR-12 Cam, Brembo 4/4s(355/330), T3 5 spokes, LC-1 wideband, Whiteline HD swaybars, TCE 3K Hi Stall, PWR Auto Trans Cooler, Koni shocks, King Low Springs, Hurricane headers, 100 cpsi cats, Twin 2.5" exhaust. Quarter Mile: 13.73 @ 105.86mph Runner Up NA/DA to BF Fairlane/LTD Geelong AFD 2024 2002 XR8 pursuit 250 Custom twin 2.5" exhaust w Herrod modifed extractors, Tuned with Moates QH
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23-05-2016, 06:15 PM | #111 | ||||
🚫⏰4️⃣🐃💩
Join Date: Sep 2012
Posts: 1,901
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Quote:
If I'm going to do this, I'm thinking might as well get an adaptor that can be used on almost any OBD2 Ford from 1999>. Or even other makes. The OBDLink MX looks like it's top shelf item. Specially reading the following in the description: Quote:
Can anyone confirm a Bluetooth or USB type adaptor that works 100% with FORScan on AU-FG please? |
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23-05-2016, 06:26 PM | #112 | ||
Regular Member
Join Date: Jul 2014
Posts: 138
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I had a bluetooth ELM327 but it wouldn't communicate with my AU but worked on other cars.
I then bought this USB one off Ebay and works perfect with FORscan and works fine on the AU. http://www.ebay.com.au/itm/231269919...%3AMEBIDX%3AIT |
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23-05-2016, 08:45 PM | #115 | ||
Regular Member
Join Date: Jan 2006
Location: Sydney , N.S.W
Posts: 427
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no mine is a ebay one...
http://www.ebay.com.au/itm/ELM327-OB...wAAOSw14xWOZTd used it on au1 au3 ba and a toyota camry |
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24-05-2016, 07:19 PM | #116 | ||
🚫⏰4️⃣🐃💩
Join Date: Sep 2012
Posts: 1,901
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Thanks. They both look like exactly the same unit.
What's the pro's and con's regarding Bluetooth vs WiFi? Can someone explain please? |
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01-06-2016, 05:47 PM | #117 | |||
🚫⏰4️⃣🐃💩
Join Date: Sep 2012
Posts: 1,901
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Quote:
And..... Great. Now I'm stuck with an adaptor that does not work with FORScan. |
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01-06-2016, 05:51 PM | #118 | ||
Regular Member
Join Date: Jan 2006
Location: Sydney , N.S.W
Posts: 427
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hmmm, i dont know what to say, its what im using, i actually used it today..
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01-06-2016, 09:17 PM | #119 | ||
Starter Motor
Join Date: Feb 2014
Posts: 1
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I recently bought a elm327 usb and downloaded forscan 2.2.5 software but as soon as I plug it into my au series 2 a message comes up unable to connect to vehicle please make sure the ignition key is on and try again so I've tried 7 times.in the left bottom corner it shows interface is connected but vehicle not could someone please help
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02-06-2016, 02:17 PM | #120 | ||
Irregular member
Join Date: Dec 2004
Location: Melbourne
Posts: 3,941
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Have you installed the drivers for the ELM327? The disc which came with mine was faulty so I downloaded the four drivers from here and it all worked without a problem:
http://www.totalcardiagnostics.com/s...-obd2-software
__________________
2000 AU II FAIRLANE 75th ANNIVERSARY - big and shiny My hovercraft is full of eels! Movie Car Chase of the Week: Gene Hackman driving a 1971 Pontiac LeMans to chase an elevated train in The French Connection (1971). |
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