Hello All,
I have a 1994 Mark VIII that I have been driving for the last 10 years. Recently, it started burbling at idle, and then a bit later it started stalling. When it is at a high RPM it seems to run a bit smoother, but it will put black marks on the pavement behind the exhaust, as there is so much unspent fuel. I ran codes on it, and got 159, 121, & 96.
With those codes in mind, I put in a new TPS, MAF, Cam Sensor, Fuel Filter, Fuel Relay, Pressure Regulator, Plugs, Wires, and Coils. If anything, the car is running even worse, as it will only make it a single mile down the road. Oil doesn't have anything bad in it, neither does the coolant. When I changed the plugs, they were wet, much like a carbureted motorcycle when it is flooded. I would have initially thought it was a stuck fuel injector, but all the plugs were wet, not just one. My current theory is that maybe the ECU has gone bad, as I can't understand why it would be behaving this way. Winter is Coming™, and I am running out of time before I won't be able to wrench on it. This is the first time I have been stumped by anything the car has needed. Any thoughts on my mystery? I would appreciate any suggestions.
Thank you.
-Plagueis
I have a 1994 Mark VIII that I have been driving for the last 10 years. Recently, it started burbling at idle, and then a bit later it started stalling. When it is at a high RPM it seems to run a bit smoother, but it will put black marks on the pavement behind the exhaust, as there is so much unspent fuel. I ran codes on it, and got 159, 121, & 96.
With those codes in mind, I put in a new TPS, MAF, Cam Sensor, Fuel Filter, Fuel Relay, Pressure Regulator, Plugs, Wires, and Coils. If anything, the car is running even worse, as it will only make it a single mile down the road. Oil doesn't have anything bad in it, neither does the coolant. When I changed the plugs, they were wet, much like a carbureted motorcycle when it is flooded. I would have initially thought it was a stuck fuel injector, but all the plugs were wet, not just one. My current theory is that maybe the ECU has gone bad, as I can't understand why it would be behaving this way. Winter is Coming™, and I am running out of time before I won't be able to wrench on it. This is the first time I have been stumped by anything the car has needed. Any thoughts on my mystery? I would appreciate any suggestions.
Thank you.
-Plagueis