Are 991 Porsches reliable?
The 991 is an extremely reliable car and does not have the issues associated with the 996 or early 997.
Are there any problems with the Porsche 991?
Though, there is one relatively common issue: faulty change over valves (COVs). Porsche 991 cars have multiple COV solenoids, each used to route vacuum to a different part of the vehicle (e.g., heater shut-off valve, exhaust flaps, etc.). Otherwise, owner reviews and online resources generally portray the 991 as a reliable car.
When to replace CoV solenoids on Porsche 911?
Porsche has used the COV in many circumstances throughout the 911 chassis, so if you have a failure related to a mechanical device controlled by vacuum, look for a failure in the COV solenoid in the system first. Most recently, the 991 cars have had all of their COV solenoids replaced in a maintenance campaign.
How can I tell if my Porsche 911 has a problem?
An early telltale sign can often be one exhaust tailpipe being more sooty black than the other. The sound of this problem is not a tick like a bad lifter, it’s more a rhythmic knock and usually shows up first on the passenger bank of the flat 6 engines.
Why is my abs not working on my Porsche?
If you are getting ABS failure and PSM failure drive to workshop message on the dashboard when you press the brake pedal or start to drive the problem may be the brake light switch. This problem can affect any Porsche, including 911, Cayman, The brake light switch is very inexpensive and takes only a few minutes to replace.
Can a Porsche 991.2 auto start stop?
Stephen – yes, the 991.2 will behave like you describe, but in practice it’s very difficult (for me anyway) to consistently avoid pressing the brake hard enough to trigger ASS.
An early telltale sign can often be one exhaust tailpipe being more sooty black than the other. The sound of this problem is not a tick like a bad lifter, it’s more a rhythmic knock and usually shows up first on the passenger bank of the flat 6 engines.
What happens when you disconnect the battery on a Porsche 996?
Most systems are different on the 996. For example, the PSM isn’t affected by a battery disconnection, but it usually gives a heart stopper message on a 9×7. Window resetting and DME adaption are different. I’ll try to post something on the 996 forum in a day or two. Hi Richard. Look forward to it. Always a pleasure 2019 VW Up! GTI Tornado Red
Why is my PSM deactivated on my Porsche?
Just had this come up & “start/stop deactivated” on my 2012 981 3.4S. Anyone else had this issue. Maybe it’s the famous ‘sticking brake pedal’ problem. If you’re not familiar, the brake pedal bush gets tight and the brake stays slightly on. If it’s really bad you notice the loss of power. That de-activates the PSM.