AEM EMS Problem
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i HAS questions ?
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From: OH
AEM EMS Problem
I posted this on the AEM forum as well, but it takes forever to get a response there. Anybody on here have a clue as to whats could be going on/what to check out next. Here are my two posts from the thread I started.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
I originally had my UEGO controller set up with the brown wire from the UEGO controller running to pin B14, Sensor Ground, on a 1020 box (instructions were somewhat confusing). I was able to get the car started, but it idled high and the air/fuel ratio read ~19:1. I was going to get the Idle% vs. Target table sorted out, but I wanted to take care of the air/fuel problem first. I searched on here, and found that the brown wire should not be connected to the EMS. I pulled the plug for the entire B section connector out, as the only wire in it right now is the brown wire. After doing this, the ECU does not see any power when I turn it the key to ON. I tried the stock ECU and it gets power and kicks on the fuel pump. I've checked all the fuses under the hood and under the drivers side of the dash, are there any I could be missing or is there anything else that could be wrong?</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
I put a multimeter on both power sources using both the AEM and the stock ECU. When the AEM is hooked up, it shows 0V but it shows ~8V when the stock ECU is in there, running across Power Ground 1 and Power Source 1, same thing for PG2 and PS2. When I hook the positive of the multimeter up to PS1 or PS2, and the negative to the chassis ground under the hood, it shows ~12.3V with my stock ECU in there. When I plug in the AEM, it shows ~9.5V going into the ECU. I've tried plugging the brown wire back in to see if that would fix the problem, but nothing happens when I do that either.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
I originally had my UEGO controller set up with the brown wire from the UEGO controller running to pin B14, Sensor Ground, on a 1020 box (instructions were somewhat confusing). I was able to get the car started, but it idled high and the air/fuel ratio read ~19:1. I was going to get the Idle% vs. Target table sorted out, but I wanted to take care of the air/fuel problem first. I searched on here, and found that the brown wire should not be connected to the EMS. I pulled the plug for the entire B section connector out, as the only wire in it right now is the brown wire. After doing this, the ECU does not see any power when I turn it the key to ON. I tried the stock ECU and it gets power and kicks on the fuel pump. I've checked all the fuses under the hood and under the drivers side of the dash, are there any I could be missing or is there anything else that could be wrong?</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
I put a multimeter on both power sources using both the AEM and the stock ECU. When the AEM is hooked up, it shows 0V but it shows ~8V when the stock ECU is in there, running across Power Ground 1 and Power Source 1, same thing for PG2 and PS2. When I hook the positive of the multimeter up to PS1 or PS2, and the negative to the chassis ground under the hood, it shows ~12.3V with my stock ECU in there. When I plug in the AEM, it shows ~9.5V going into the ECU. I've tried plugging the brown wire back in to see if that would fix the problem, but nothing happens when I do that either.</TD></TR></TABLE>
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