BoobieTrap
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« on: October 25, 2017, 12:01:58 AM »
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I have converted my 1.8t narrowband to wideband, originally disabling ECU EGT in the ECU and running an EGT gauge inside the car (with an audible alarm when EGT>900).
I have recently upgraded to a GTX30 and the manifold came with an EGT sensor, so I have wired it in, 12V, 0V and ECU pin 61.
Initially I just want to check how ECU EGT sensor compares to my gauge (they are both located in the manifold). However, when logging tats_w, I get a constant 1,110C. I initially assumed that leaving EGT sensor disabled in the ECU will prevent any fault codes/limp modes etc but still provide me with a valid EGT reading but I see now that it may not be the case.
Am I right in assuming that leaving CDATR, CDATS, CATR disabled and only enabling EGT only via ESKONF will give me valid EGT readings via tats_w? Or should it work regardless and my EGT sensor is toast?
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TijnCU
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flying brick
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« Reply #1 on: October 25, 2017, 02:36:06 AM »
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The oem egt sensor comes with a seperate controller. I assume that you can not wire any generic sensor to this pin for correct readings. Can you elaborate on the type of sensor you are trying to use?
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BoobieTrap
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« Reply #2 on: October 25, 2017, 03:26:18 AM »
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Sorry, should have said that I used OEM Audi EGT sensor 06a919529, which came with the controller. I got it second hand so I don't know if it actually works, hence I wanted to check if it gives good readings before enabling all the diagnostics for it in the ECU.
I am using 06A906032HJ ECU which I crossflashed with Audi TT BAM hex file. When I converted to this wideband ECU, I have originally disabled EGT, VVT, Rear o2, CAT etc, and now I am trying to re-introduce the EGT sensor but I need to check that the sensor/controller works correctly first.
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TijnCU
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« Reply #3 on: October 25, 2017, 05:20:00 AM »
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Another possibility is that your HJ ecu does not read on that EGT pin.
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BoobieTrap
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« Reply #4 on: October 25, 2017, 05:36:53 AM »
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It's possible, however, I know that that pin is related to heating/cooling in some way. The APX narrowband ECU uses that pin (61) for Air Con pressure switch, and before I realized this I had the fans behaving erratically on start up (constantly going ON and OFF) on the wideband ECU. Once I disconnected the pin and connected it to the EGT controller, the fans started behaving correctly.
I guess what I am asking is whether enabling EGT via ESKONF but disabling the EGT diagnostics via CDATR, CDATS and CATR should result in correct EGT readings being logged via ME7logger?
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fknbrkn
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« Reply #5 on: October 26, 2017, 12:28:19 AM »
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y no enable ATR and test?
5min talking
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BoobieTrap
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« Reply #6 on: October 26, 2017, 12:59:09 AM »
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Because I am still tweaking MLHFM/KFLF as I've hit ps_w limit and I don't want EGT limp mode to be interfering until I've sorted it.
I think I will just have to wait until I'm happy with those before checking/enabling all EGR functionality.
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prj
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« Reply #7 on: October 26, 2017, 04:10:21 AM »
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The sensor is damaged. Even with the keyword disabled it should still read.
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BoobieTrap
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« Reply #8 on: October 26, 2017, 04:28:34 AM »
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That's useful, thank you.
Do you know if there is a way to bench test the sensor+controller?
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