My problem started after replacing the gas tank and both fuel pumps on my Euro 323i. The car ran mostly fine before the repair, except for the dirty gas and possible failing pumps.
After the repair, the car would only start if the MAF was unplugged. I have a friend with another Euro E30 with the same MAF. We swapped them out - My car still had the same problem, and his ran fine, so I know the MAF is ok.
Tonight I took the cover off my MAF, and found that if I hold the meter so the MAF is wide open, the car will run with it plugged in. It will however only run for a few minutes before just shutting down.
I have triple checked for vacuum leaks, and found none. The fact that the car runs with the MAF wide open suggests vacuum leaks are not the problem.
My thought now is that the fuel pressure regulator may be bad and the car is getting too much fuel. When the fuel pressure regulator fails, would it cause the fuel pressure to go up or down? Could the previous rusty tank have caused the regulator to fail by passing rusty gas through it?
I'm also thinking there may be a timing problem. Does anyone know if that could cause this?
My final thought is that the L-Jetronic computer is failing. I find this unlikely since those rarely fail because they're so simple, especially compared to the Motronic computers.
Can anyone help me with any ideas? Any thoughts are greatly appreciated.
Thank You
After the repair, the car would only start if the MAF was unplugged. I have a friend with another Euro E30 with the same MAF. We swapped them out - My car still had the same problem, and his ran fine, so I know the MAF is ok.
Tonight I took the cover off my MAF, and found that if I hold the meter so the MAF is wide open, the car will run with it plugged in. It will however only run for a few minutes before just shutting down.
I have triple checked for vacuum leaks, and found none. The fact that the car runs with the MAF wide open suggests vacuum leaks are not the problem.
My thought now is that the fuel pressure regulator may be bad and the car is getting too much fuel. When the fuel pressure regulator fails, would it cause the fuel pressure to go up or down? Could the previous rusty tank have caused the regulator to fail by passing rusty gas through it?
I'm also thinking there may be a timing problem. Does anyone know if that could cause this?
My final thought is that the L-Jetronic computer is failing. I find this unlikely since those rarely fail because they're so simple, especially compared to the Motronic computers.
Can anyone help me with any ideas? Any thoughts are greatly appreciated.
Thank You
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