That is definitely an interesting one , were you able to narrow down the exact issue that was causing it?
That is definitely an interesting one , were you able to narrow down the exact issue that was causing it?
yeah two pins were swapped at the map sensor.
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Okay, that all helps a lot. Thanks guys. I ordered a new MAP sensor and just have to wait for it to come in. The tune is on my laptop. I'll try and upload it later.
Originally Posted by Alvin
I wonder if that is happening on this one, because at key on it reads 105, and then when it gets running and I give it a little gas it goes down to 55-70; which to me would be the opposite with throttle wouldn't it? Although with a 2bar sensor, shouldn't it be reading 210 if it was flopped? I am using an aftermarket harness from speedway. Maybe it has always been wrong, but it ran on the MAF instead......
Key on not running should read atmospheric pressure, add the MAP voltage channel and see what voltage the PCM is seeing, I would check the wiring first, you will have a 5v, a ground, and a signal to the PCM that will vary between roughly 0.5 and 4.5v based on pressure, with the sensor unplugged you need to figure out which wire is which, 5v is usually gray, and ground should be black, you will need to confirm the 5v and ground with a meter.
If this is 2 bar COS you have to choose 2 bar MAP sensor from the channels menu. When you do it will read 0.0 Kpa KOEO. When you start it, it should read correctly. Just one of the GEN 3 quirks.
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Ah ha. Thats good info. I'll look at that for sure
Success! Bad MAP sensor right out of the box. Got a new one put on today and immediately fired up and running correctly. Barometric pressure is more on par at 84-85 (I live at about 5700ft) and it responds correctly when it starts. I had to take a ton out of the VE table to get the fuel right at idle. But it runs and idles the best it has ever. I added a ton to the idle airflow, but now that it is starting correctly, I may be able to bring that back down to more normal numbers. Maybe its fine the way it is?
New question. My TPS says 0.00 volts on a DBW throttle body. Accelerator pedal position is reading and throttle responds to input from my foot. Is this a DBW thing or am I looking at the wrong parameter logging?
Lastest log of start up and idle with a couple slight revs.
VE idle 7_25.hpl
Latest tune file where it starts and idles
54International 2 bar turbo VE tune 7_24.hpt
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