How much do Porsche 911s depreciate?
A Porsche 911 will depreciate 44% after 5 years and have a 5 year resale value of $102,962. The Porsche 911 is one of the greatest cars of all time, and is virtually problem-free and indestructible. As a result, it holds its value terrificly well.
Why did my Porsche 911 fail the smog test?
My Porsche 911 just failed the smog test because the emission monitors were incomplete… specifically the oxygen sensor monitor. I’ve driven it for at least 100 miles but I still can’t get the monitors complete. Do you happen to know the exact drive cycle to follow to get the monitors ready?
When did Porsche 911 start using fuel injection?
In 1980, emissions requirements forced the introduction of an oxygen sensor into the system, which helped the engine to better run at the appropriate mixture level through the regulation of fuel pressure inside the fuel distributor. The two primary adjustments for the CIS are the idle speed and the mixture adjustment.
Are there any problems with the Porsche 911 CIS?
Although the CIS has a reputation for reliability, it is also known for having a few characteristic problems. Warm and cold start problems are common, as well as backfiring and poor performance at startup. On the early 911s, the CIS didn’t even operate properly, until the car was warmed up.
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.
What was the difference between 1974 and 1977 Porsche 911s?
The 1974 models usually lived a bit longer because they didn’t have thermal reactors, and the 1977 models had improved Dilavar head studs, but none of the “S” cars were reliable in any modern, or even contemporaneous, sense of the world.
My Porsche 911 just failed the smog test because the emission monitors were incomplete… specifically the oxygen sensor monitor. I’ve driven it for at least 100 miles but I still can’t get the monitors complete. Do you happen to know the exact drive cycle to follow to get the monitors ready?
What should I do with my Porsche 911?
A. Start your Porsche 911 and let it idle for approximately 2 1/2 minutes. This will allow the ECU to diagnose oxygen sensor aging; meaning the computer will be monitoring the oxygen sensor warm-up period and reaction to rising exhaust temperatures. During this period the ECU is also testing the Secondary Air Injection system. B. Begin driving.
How does the ECU work on a Porsche 911?
A. Start your Porsche 911 and let it idle for approximately 2 1/2 minutes. This will allow the ECU to diagnose oxygen sensor aging; meaning the computer will be monitoring the oxygen sensor warm-up period and reaction to rising exhaust temperatures. During this period the ECU is also testing the Secondary Air Injection system.