MAP AEM 3.5 BAR/Wideband issues
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MAP AEM 3.5 BAR/Wideband issues
I have an LS Turbo setup, tuned on EcTune. MAP sensor is an AEM 3.5 Bar. It is wired correctly. For some reason when I go to start the car now, at KOEO the sensor reads 5.40-5.90 in Hg (1.67 Volts) via Datalogger, as if I had a massive vacuum leak. I have looked for any sort of vacuum leak and cannot find any.
When I go to start the car, it cranks over a few times and then acts like its barely catching but won't start, I blip the throttle a few times and it will catch JUST enough to start and I can give it gas, it starts and idles and the MAP sensor just starts reading correctly 15.80-16.30 in Hg @ ~1V (idling). I thought it was the MAP sensor itself (had another 3.5 Bar AEM) so I got a new one, and it didn't change anything.
Has anyone had this issue as well?
Is it EcTune itself?
Would it be the Ostrich or the ECU for any reason?
If I had voltage draw off the battery somewhere, could that do it? If so, I don't understand why I would see the correct voltage at KOEO.
On a separate note, after driving for about 10 minutes, my water temp gets hot (212F +) and my wideband O2 sensor seems to just die. On AEM UEGO gauge, it reads "- - -" and on Datalogger reads 16.40 AFR (max that it will read). If I pull over and let the car cool down for a few minutes, the O2 comes back. Not a gradual comeback, but immediately back to 12.5-13.0 like nothing was wrong. The wiring is fine.
Does anyone know why this happens or how to fix it?
P.S. yes I know I have a cooling issue (working on it).
When I go to start the car, it cranks over a few times and then acts like its barely catching but won't start, I blip the throttle a few times and it will catch JUST enough to start and I can give it gas, it starts and idles and the MAP sensor just starts reading correctly 15.80-16.30 in Hg @ ~1V (idling). I thought it was the MAP sensor itself (had another 3.5 Bar AEM) so I got a new one, and it didn't change anything.
Has anyone had this issue as well?
Is it EcTune itself?
Would it be the Ostrich or the ECU for any reason?
If I had voltage draw off the battery somewhere, could that do it? If so, I don't understand why I would see the correct voltage at KOEO.
On a separate note, after driving for about 10 minutes, my water temp gets hot (212F +) and my wideband O2 sensor seems to just die. On AEM UEGO gauge, it reads "- - -" and on Datalogger reads 16.40 AFR (max that it will read). If I pull over and let the car cool down for a few minutes, the O2 comes back. Not a gradual comeback, but immediately back to 12.5-13.0 like nothing was wrong. The wiring is fine.
Does anyone know why this happens or how to fix it?
P.S. yes I know I have a cooling issue (working on it).
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