I know I've posted this problem more than once. And I know that so far no one has had any ideas I haven't already tried. But here we go, one last time.
My car has a serious air fuel mixture problem. At idle, it blows large clouds of both black and white smoke. Throughout the driving range, the vehicle sputters profusely. Pushing the accelerator to the floor negates the problem. The vehicle consumes extremely large amounts of fuel. If the throttle position sensor is unplugged, the car performs nominally throughout the driving range. However, it runs extremely rich without the sensor connected. When I replaced the computer, the car ran perfect for 10 minutes. But after shutting the car off, it later went back to running exactly like it had before. But during those 10 minutes, it behaved perfectly. So, my current thesis is that the wiring from the ECM is at fault. What I need to know is, how comprehensive is that harness? Do I have to rewire the entire vehicle to fix this? 1987 Mustang LX hatch, 2.3 N/A. Is it likely that the wiring to the air fuel mixture circut is faulty, and that that circut is being burned out by the malfunction? Every sensor is brand new, and are all in working order. This problem is a conundrum for me, and every mechanic I've talked to about it.
My car has a serious air fuel mixture problem. At idle, it blows large clouds of both black and white smoke. Throughout the driving range, the vehicle sputters profusely. Pushing the accelerator to the floor negates the problem. The vehicle consumes extremely large amounts of fuel. If the throttle position sensor is unplugged, the car performs nominally throughout the driving range. However, it runs extremely rich without the sensor connected. When I replaced the computer, the car ran perfect for 10 minutes. But after shutting the car off, it later went back to running exactly like it had before. But during those 10 minutes, it behaved perfectly. So, my current thesis is that the wiring from the ECM is at fault. What I need to know is, how comprehensive is that harness? Do I have to rewire the entire vehicle to fix this? 1987 Mustang LX hatch, 2.3 N/A. Is it likely that the wiring to the air fuel mixture circut is faulty, and that that circut is being burned out by the malfunction? Every sensor is brand new, and are all in working order. This problem is a conundrum for me, and every mechanic I've talked to about it.