I have a 1998 Acura 3.5 RL which I have just put a new/used engine into. It badly carbon fouls the spark plugs within seconds although it is in closed loop. My scanner shows a calculated load of 62% - 65% at idle. TPS is reading only 11.4% which is correct. What sensor is Acura using to calculate the load on the 3.5 RL? I am assuming I have a vacuum routing problem.
All of them, not just one.
Thank you Dennis. I realize that more then just one sensor is used in the calculation of load. However this car is not moving, it iis in park idling and reading 65% load with only 11.4% throttle angle, 12 degrees of initial timing 115 degrees intake air temp, 180 degrees coolant temp. With proper reference , signal and ground to the TPS. And will carbon foul the plugs in seconds (more of soot then carbon) This signafies an extremely rich condition although a lot of air must be entering the cylinders in order to cause the soot to accumalate. So although you are correct, I'm wondering which of the normal load sensors is most likely to cause the excessive load calculation under the idle situation. I am guessing the MAP sensor or is Acura using a combination of MAP BARO or a Pressure differential sensor? The vehicle is not mine I have been asked to do the diagnostic. Already I found transmission vent was plugged and incorrectly routed, power steering was perculating, and fuel pressure regulator was routed through the EGR transducer, among other problems. Am I correct or can you think of another scenario. Any help would be greatly appreciated. Thank you
Sorry I wouldn't began to advise you here. Make all right as far as hook up goes is all I can suggest.
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SOURCE: My Mom's Acura is gutless! The code reader shows
Mileage?
5 (2.5) or 6 (3.2) cylinder?
On 5 change wires and distributor cap and rotor button. Use Borg Warner wires, they are low resistance.
Use NGK iridium plugs.
Use injector cleaner.
Replace fuel filter.
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