Are there any mechanical problems with my Porsche 911?

Listed below are Porsche 911 common mechanical problems with their likely resolutions. These are the most frequent 911 problems diagnosed by our repair shops over the years. An accurate diagnosis of an issue by a Porsche mechanic typically saves you time and money – see our guide to local independent Porsche repair shops that can help.

How long has the Porsche 911 been around?

The Porsche 911, which has been around since 1963, is one of the most iconic sports cars of all-time. But that doesn’t mean it’s without problems. Each generation of the 911 has unique issues buyers need to watch out for.

Why did Porsche change the engine on the 996?

Engine liquid-cooling was added to the fourth generation 911, also known as the 996. Rumor has it, Porsche made the design change to be more competitive with sports cars from other manufacturers. Unfortunately, the added level of complexity proved troublesome out of the gate.

Are there any problems with the Porsche 997?

Consequently, aficionados were relieved when the 997 was introduced in 2012. Although the updated Porsche is more mechanically sound than its predecessor, it does have some known issues. For one thing, the dreaded IMS bearing problem carried over into early models (pre-2006).

What is the MSD system for a Porsche 911?

The MSD system allows you to adjust this RPM level by plugging in modules into the unit. The main MSD unit recommended for the 911 is the 6AL, part number 6420. This kit contains all the wires, connectors, mounts and crimping hardware that you will need to install the unit in your 911.

Where is the tachometer on a Porsche 911?

The tachometer wire inside the CD box connector is black with a purple stripe down the side. This wire needs to be connected to the tachometer output on the side of the MSD unit.

Where is the Orange Wire on a Porsche 911 ignition unit?

The orange wire is connected to the positive (+) terminal of the coil, whereas the black wire is connected to the negative (-) terminal. The thinner red wire needs to be connected to a switched voltage source. The best place to do this is to tap into the electrical connector that used to go to the CD box.

Where is the CD box on a Porsche 911?

The CD box is the small metal box on the left side of the engine compartment that makes a high-pitched whine when the ignition is turned on. If you need to replace the CD box, I recommend that you replace it with one of the better and cheaper MSD units.

Is the Porsche 992 C4 a good car?

Porsche 992 C4S: an engaging drive… Parked next to my 993, the 992 is a big car. A good-looking car too, every angle kind to it, some details a masterclass, like the front for example: the hood’s shut-line continues forward, eating into the front bumper by a centimetre.

How many Porsche 911s have bad IMS bearing?

However, in the real world less than 5% have actually failed or can be directly linked to an engine failure. Porsche shipped approx. 77,000 vehicles to the USA that could have a bad IMS bearing. Even the most enthusiastic counting of IMS failures produces a total around 3500 or less than 5%.

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.

Do you mean 997 C2S or C4s?

Thanks, do you mean 997c4s, thats what im looking at. How was the 2s in the wet? As a driver of a C2S for the past 12 months I have been amazed by the levels of grip even in the wet…..with the right setup I can’t see why anyone would need a 4S…..I would also guess on track the 2 wheel drive would continue to be the better bet……

What are the most common problems with a Porsche 911?

Below is a list of some of the most common Porsche 911 problems that we’ve seen over the years. Common Engine Problems with the Porsche 911 • Leaks in the rear main seal • Failure and premature wear of the intermediate shaft bearing

Are there any problems with the 911 996 series?

911 996 Series (Carrera, GT3-1, TT, GT2) (MY1998 – 2005) 996 Series (Carrera, Carrera 4, Carrera 4S, Targa) So many “common problems” The RennTech.org community is Member supported! Please consider an ANNUAL donation to help keep this site operating. Click here to Donate Welcome to RennTech.org Community, Guest

When did the Porsche 911 Carrera 997 come out?

The 911 Carrera 997 was Porsche’s second go round at moving on from the air-cooled 911. The car is fun and exhilarating to drive, yet can be used every day. After the success and issues with the 996 versions of the 911, Porsche launched the 997 revised version in 2005.

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.

Where is the brake light switch on a Porsche?

The Porsche brake light switch is mounted above the brake pedal. You can’t determine if the brake light switch is defective or not by looking at the brake lights. To determine why your Porsche ABS and PSM lights come on, you need to diagnose the problem.

Why are my Porsche 911 brakes going down?

This happens with age when the master cylinder seals wear out and are no longer able to sustain pressure. After making the replacement the entire system will need to be bled. Also, check all bleed nipples and hoses just to be certain there is no leak there. How to troubleshoot a Porsche 911 brakes when the pedal goes down to the floor?

What causes vibration when braking a Porsche 996?

The most common causes for vibration when braking are warped rotors or a bent hub. However, if nothing has been hit a bent hub is unlikely. Chances are that this is a rotor problem. What type of brake fluid should be used on a Porsche 996 braking system?

What causes a car to lose braking power?

Loss of braking power suggests that the brake booster system has failed. Most common causes are: The outcome is that the brake pedal becomes hard and all assisted power is lost. Consequently, it takes much longer to stop the vehicle; a serious safety hazard, which needs to be addressed immediately.

What should I do if my Porsche 997 key fob is not working?

Remove the key and press one or more of the remote buttons to ensure it’s working properly. (Related Article: Porsche 997: How to Replace Key Fob Battery – Rennlist.com) Figure 1. Check and replace the key fob battery if necessary. It may need to be re-synced to work properly.

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 should I do if IMS fails on my Porsche?

If you own a 911 or Boxster with an IMS failure, you have really two options: replace the engine or sell the car for parts non-running. Refurbished engines range from around $10,000-$15,000 for a 911 and $5,000 to $8,000 for Boxsters; this does not include installation, which takes about 8 hours with a Porsche familiar technician.

What causes an oil leak in a Porsche 911?

A failing air oil separator (aos) is the likely cause of rear main seal failure and oil leaks, as it is in other VAG cars. Crankcase vacuum exceeds the normal range in the engine under heavy acceleration and sucks in air damaging the rear main seal.

What happens to the battery in a Porsche 911?

Leaving the battery to drain completely usually shortens the life of the battery as well. A flat battery on a 911 can be a pain. To access the battery or engine compartment requires battery power for the electric hood release – not easy with a flat battery. If this happens, use the following procedure:

Which is the best review of a 2000 Porsche 911?

Edmunds’ expert review of the Used 2000 Porsche 911 provides the latest look at trim-level features and specs, performance, safety, and comfort. At Edmunds we drive every car we review, performing road tests and competitor comparisons to help you find your perfect car. Read the full in-depth review of the Used 2000 911 at Edmunds.

When was the last redesign of a Porsche 911?

The current 911 was last redesigned in 1999 when the official platform designation changed from 993 to 996.

What kind of front spoiler for Porsche 911 Carrera S?

TechArt Type I Front Spoiler for 997.2 Carrera / S / GTS The new TECHART 2009 Aerokit I program for Porsche 911 models explicitly expresses the silhouette and details… TechArt Type II Rear Spoiler for 991 Carrera / S The TechArt Type II rear wing not only generates more down-force but looks more aggressive too.

What kind of diffuser does Porsche 997 Carrera use?

TechArt Rear Diffusor for 997 Carrera Replaces the rear valence on 997 models with TechArt’s black diffuser with polished strip. Werks One Composites Carbon Fiber Diffuser for 997.2 Carrera / S / GTS The Werks1 Carbon Fiber rear diffuser kit bolts up to any 997.2 model.

What are side skirts on Porsche 911 Carrera shark Werks?

TechArtType I Side Skirts for 991.2 Carrera / S The TechArt Type II rear wing not only generates more down-force but looks more aggressive too. TechArtSide Air Outlet Louvers for 991.2 Carrera / S The TechArt Type II rear wing not only generates more down-force but looks more aggressive too.

How to troubleshoot a Porsche 911 blower motor problem?

In the case of the rear blower motor, the switch is connected to the red handles on the floor of the car. Check the switch with a continuity tester to make sure that it is working properly. Finally, if all the other tests fail to locate the problem, the wiring may be at fault.

What causes a Porsche 911 engine to wobble?

The wobble occurs at the bottom of the stroke and results in the piston skirt dragging against the cylinder wall thereby scoring the liner. More recently, this issue has also been seen on the later engines. An early telltale sign can often be one exhaust tailpipe being more sooty black than the other.

When did Porsche stop making the 911 SC?

As of model year 1984, the SC version was again replaced by the 911 Carrera. Until model year 1978, the window surrounds and door handles of the 911 SC were chrome-plated, like those of the previous 911 models; as of model year 1979, they were anodized black – as in the Carrera models.

What kind of engine does a Porsche 911 SC have?

The 911 SC was fitted with 15″ cast aluminium wheels from ATS as standard. The exterior mirrors of the 911 SC were electrically adjustable and painted in the exterior color. The 911 SC was powered by a 3.0-liter flat engine, the output of which was increased slightly over the years.

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.

How to troubleshoot a Porsche 911 Carrera engine?

Here’s a few useful 84-89 carrera tidbits that others sent me while going through my recent diagnosis. 1. Remove a spark plug wire and insert a test plug into the wire, place it next to the engine, have someone crank the engine and look for a spark (or remove one of the plugs and do the same).

Why is my Porsche 911 engine not starting?

If the relay doesn’t fix it, it could be the DME computer itself, faulty sensors (flysheel speed and position), or faulty grounds. Try disconnecting the DME computer and cleaning the contacts. 7. Check all ground connections (brown wires) for corrosion. Disconnect them, clean them, and replace.

What to do if your 911 engine starts?

If you have one available, swap in a known working DME computer from a 911 friend. Be careful that you have the right production year and part number because there are differences in the pin mappings. 11. If the DME is okay, you can listen to the injectors with a stethoscope, if they click, then power is getting to the injectors.

Where are the DME fuses on a Porsche 911?

All DME-related fuses are up front, but there are three fuses under the plastic cover at the left rear side of the engine compartment. 9. If you have one available, swap in a known working DME computer from a 911 friend. Be careful that you have the right production year and part number because there are differences in the pin mappings.

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.

Can a bad IMS bearing cause a Porsche to fail?

Yes, be clear, the IMS bearing is a weak point and it will fail. However, in the real world less than 5% have actually failed or can be directly linked to an engine failure. Porsche shipped approx. 77,000 vehicles to the USA that could have a bad IMS bearing.

https://www.youtube.com/watch?v=z14tvzA_svk

Where can I get a Porsche 911 Carrera fixed?

German Auto Center is a premier Porsche repair center in Austin, TX that has seen and fixed many 911 issues over the last 35 years. The Porsche 911 Carrera is an outstanding vehicle that provides power and performance, but it isn’t bulletproof. Below is a list of some of the most common Porsche 911 problems that we’ve seen over the years.

What to do if your Porsche 911 Fuse has blown?

If the relay checks out, then you want to make sure that the fuse is still good. Identify the proper fuse, and check to make sure that it has not blown. Also, the long tubular fuses that the 911 uses are susceptible to corrosion building up on the terminals. Make sure that the fuses are clean and securely seated.

Why is it bad to buy a Porsche?

A lot of people will have to pay more for a new engine than their car is worth. Because Porsche has not addressed this issue publicly and will not grant potential victims an extended warranty or a free mechanical fix of the problem, many otherwise good used cars are now tainted. It is certainly affecting resale value.

Is there a class action suit against Porsche?

An owner in Toronto bought an ’05 Boxster just out of warranty and had the problem soon after he bought the car. He’s trying to pull together a class action suit against Porsche. I recall reading about an owner in Britain who won a case against Porsche.

What kind of problem does a Porsche 911 have?

Less common are leaks from the cam seals and scavenger oil pump seals. Valve cover leaks are obvious and fairly straightforward to fix on most models. The valve covers do not have a gasket – instead a liquid gasket sealer is used.

Are there any IMS bearing failures in my Porsche?

The IMS bearing failures are mainly in the 2001 through 2004 motors; maybe as many as 8% have already failed or will eventually. The fix is to have that bearing upgraded before it goes. Later engines have a stronger design. The motor in my car was replaced under warranty at around 45K miles with the newer design.

Why does my Porsche 911 make a knocking noise?

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. The root cause of this issue is open to discussion, however, wear in the piston rings and liners causes the piston to wobble.

Is the Porsche 911 the most reliable car?

In fact, Porsche 911s are considered one of the most reliable cars ever made, and Consumer Reports has just reported Porsche the best brand of 2020. Even so, there are some annoying problems that 911 owners complain about.

How long has the Porsche 911 been in production?

Even if owners have to endure a few small problems, the 911 has been a marvel of automotive engineering since 1964. The classic lines of the Porsche 911 remain largely unchanged after 56 years in production. Also unchanged is the legendary 911 reliability.

Why does my Porsche make a squealing noise when I brake?

This noise is often mistaken for a malfunction; however, that is rarely the case. Brake squeal is a result of a condition called stick-slip, [that causes] microscopic vibrations that create noise to be broadcast by the brake rotor which acts as a speaker. Necessity dictates that the Porsche brake system be designed with large rotors and pads.

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