DavsR
Well-known member
I have never posted in the discussion area of the forum, so my apologies if this is in the wrong area.
PROBLEM: Car will not drive past 4-4.5 rpm and when boost is built it goes immediately rich, timing doesn't always get retarded. I have ECMLINK v3 and I do not log knock during the time that timing is retarded. Boost will only build to 3-5 pounds then I have to let off the throttle because my AFR jumps to 9:1. When I accelerate WOT or past RPM range it starts to feel as if I hit a wall and or lack of fuel or spark. In normal low rpm driving car accelerates fine and the car idles perfectly. Freeway driving is fine as long as i don't accelerate rapidly. I do notice that when i'm shifting between gears the car goes rich instead of immediately lean.
ATTEMPTED SOLUTIONS: Problem started after my ECU Burned up, literally caused a small fire in the ECU. I've replaced TPS (1g and 2g), CAS (green top), ISC (black) and ECU (rebuilt like new); all seem to be in working order. I have my Front O2 being simulated currently since the wires have cracked on two of the four and one is completely broken. I have base timing set at 5 degrees and TPS volt at .63; My current maps are set after the evo 8, but changing back to stock makes no difference.
IDEAS for SOLUTION: I think I'm going into OPEN loop as soon as the car see's boost which is causing me to run extremely rich. Car jumps from 14.9 to 9 as soon as a little boost is present. I think it maybe associated to my front O2 Sensor problem, but I though that if I had it simulated then the ECU would not use it for OPEN/Closed loop. Another idea I have thought of is that I have a weak spark that is blown out at any level of boost causing my rich mixture with little to no knock.
HELP: If anyone has experienced this in the past or found a solution to a problem similar to mine I would greatly appreciate your input. Thank you ahead of time.
PROBLEM: Car will not drive past 4-4.5 rpm and when boost is built it goes immediately rich, timing doesn't always get retarded. I have ECMLINK v3 and I do not log knock during the time that timing is retarded. Boost will only build to 3-5 pounds then I have to let off the throttle because my AFR jumps to 9:1. When I accelerate WOT or past RPM range it starts to feel as if I hit a wall and or lack of fuel or spark. In normal low rpm driving car accelerates fine and the car idles perfectly. Freeway driving is fine as long as i don't accelerate rapidly. I do notice that when i'm shifting between gears the car goes rich instead of immediately lean.
ATTEMPTED SOLUTIONS: Problem started after my ECU Burned up, literally caused a small fire in the ECU. I've replaced TPS (1g and 2g), CAS (green top), ISC (black) and ECU (rebuilt like new); all seem to be in working order. I have my Front O2 being simulated currently since the wires have cracked on two of the four and one is completely broken. I have base timing set at 5 degrees and TPS volt at .63; My current maps are set after the evo 8, but changing back to stock makes no difference.
IDEAS for SOLUTION: I think I'm going into OPEN loop as soon as the car see's boost which is causing me to run extremely rich. Car jumps from 14.9 to 9 as soon as a little boost is present. I think it maybe associated to my front O2 Sensor problem, but I though that if I had it simulated then the ECU would not use it for OPEN/Closed loop. Another idea I have thought of is that I have a weak spark that is blown out at any level of boost causing my rich mixture with little to no knock.
HELP: If anyone has experienced this in the past or found a solution to a problem similar to mine I would greatly appreciate your input. Thank you ahead of time.
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