What causes a Porsche 911 starter to fail?
The electrical portion of the ignition switch is another source of trouble. This small part often wears out and fails after many years. Some symptoms of this problem is an ignition switch that requires a lot of force to start the car. Another symptom is headlamps that flicker on and off when you wiggle the key.
Why is the Check Engine light back on on my Porsche 911?
The fault codes will suggest faulty O2 sensors. This results in many folks replacing the front O2 sensors in the hopes of solving the problem, only to discover that within a few hundred miles the check engine light is back on. The problem is actually caused by the MAF failing and by owners blindly believing the reported engine faults.
What causes the AOS to fail on a Porsche?
The AOS has caused numerous issues on Porsche engines. As the membrane in the AOS fails, oil is sucked into the air intake. Initially this can show up as a check engine light for fuel adaptations and the oil can be deposited on the o2 sensors causing emission faults.
Is there a problem with my Porsche 911?
At one time or another, everyone will have problems starting their 911. It’s almost inevitable with older cars of any make, and Porsches certainly are not exempt. What do you do when the car won’t crank? There are a few steps and procedures that you can follow to track down the problem.
The electrical portion of the ignition switch is another source of trouble. This small part often wears out and fails after many years. Some symptoms of this problem is an ignition switch that requires a lot of force to start the car. Another symptom is headlamps that flicker on and off when you wiggle the key.
How to find out if your Porsche 911 has an electrical problem?
Start by disconnecting your battery ground, and connecting an ammeter to the battery negative and to the chassis. The ammeter will show the amount of current that your electrical system is draining from the battery. When you hook the meter up, it will most likely show that there is some small current flowing through the system.
The AOS has caused numerous issues on Porsche engines. As the membrane in the AOS fails, oil is sucked into the air intake. Initially this can show up as a check engine light for fuel adaptations and the oil can be deposited on the o2 sensors causing emission faults.
What causes smoke at the start of a Porsche 911?
The smoke at startup can also be caused by a air oil separator (AOS) that is going bad but not completely failed yet. The M96 and M97 engines are famed for cylinder scoring – deep gauges in the cylinder liner, usually associated with a knocking noise and eventually catastrophic engine failure.