Windows, power locks, manual locks, doors, trunk, tailgate, mirrors, power and manual seat controls, seat belts, sunroof, convertible top, glass defects.
The 1999 Porsche 911 is known for its performance, but it does have some reliability issues, like the internal leak at the oil separator. This problem can lead to fuel trim and oxygen sensor limit faults, which might affect the car’s efficiency and emissions. While it’s a classic ride, keeping an eye on these issues is key to maintaining its legendary status on the road.
Brake pads, brake rotors, brake calipers, anti-lock braking system (ABS), brake lines, brake master cylinder, brake booster, parking brake, brake sensors, regenerative braking system (if applicable).
The 1999 Porsche 911 has been known to experience various faults due to an internal leak at the oil separator, which can lead to engine performance issues and potential damage if not addressed promptly. While this problem is a notable concern, regular maintenance and timely repairs can help mitigate its impact on the car’s overall reliability. It’s important for owners to keep an eye out for symptoms and address them quickly to maintain the vehicle’s performance.
The 1999 Porsche 911 is a classic ride, but it does have its quirks, like the persistent coolant loss due to a small leak at the coolant reservoir. This issue can be a bit of a headache, as it requires regular monitoring and maintenance to prevent overheating. While its not a deal-breaker for many enthusiasts, its something to keep in mind if youre considering this model.
The 1999 Porsche 911 is known for its performance, but one common issue is the potential for the rear main seal and intermediate support cover O-ring to leak oil. This problem can lead to oil drips and, if not addressed, might cause more significant engine issues over time. While it’s a concern for owners, regular maintenance and timely repairs can help maintain the car’s overall reliability.
The 1999 Porsche 911 is a classic ride, but it’s not without its quirks. One of the more common issues owners face is valve cover leaks, which can be a bit of a hassle to deal with. Despite this, many enthusiasts still find the overall reliability of the car to be solid, especially if it’s well-maintained.
The 1999 Porsche 911 is known for its performance, but one common issue that pops up is the check engine light due to various leaks. These leaks can stem from things like the oil separator or vacuum lines, which can be a bit of a hassle to diagnose and fix. While it’s a bit of a nuisance, staying on top of maintenance can help keep your 911 running smoothly.
The 1999 Porsche 911 is known to have some issues with the check engine light coming on due to cam tensioner and timing problems. These issues can be a bit of a headache, as they might lead to more significant engine troubles if not addressed promptly. While the car is a classic and offers a thrilling driving experience, potential buyers should be aware of these reliability concerns and consider regular maintenance to keep it running smoothly.
The 1999 Porsche 911 is known for its thrilling performance, but one common issue that pops up is engine noise from the intermediate shaft area. This problem can be a bit concerning as it might indicate potential wear or failure of the intermediate shaft bearing, which is crucial for engine reliability. While not every 911 from this year will experience this issue, it’s something to keep an eye on if you’re considering buying or currently own one.
The 1999 Porsche 911 is a classic ride, but it’s not without its quirks. One common issue is the difficulty downshifting from second gear, which is often due to an internal transmission problem. While this can be a bit of a headache, many owners find that with regular maintenance, the car remains a reliable and thrilling drive.
The 1999 Porsche 911 is known for its thrilling performance, but like any older sports car, it has its quirks. One common issue is the monitor warning lights, which can sometimes be overly sensitive, so it’s a good idea to keep an eye on them and address any alerts promptly. Additionally, regular brake inspections are crucial, as the braking system can experience wear and tear over time, impacting overall reliability if not maintained properly.
Cruise control, keyless entry system, push-button start, wiper motor, warning lights, power mirrors, interior lighting, exterior lighting, dashboard indicators, electronic parking brake, tire pressure monitoring system (TPMS), alarm and security system, remote engine start, heated and ventilated seats, heated steering wheel, wireless charging pad.
The 1999 Porsche 911 is known for its thrilling performance, but it does have some reliability issues, particularly with misfires caused by a failed mass air flow sensor or a failed purge valve. These problems can lead to engine performance issues and may require timely repairs to maintain the car’s overall reliability. While these issues are not uncommon for a vehicle of its age, regular maintenance can help keep the 911 running smoothly.
Dashboard rattles, squeaks, wind noise, door seals, weather stripping, water leaks, air leaks, excessive road noise, suspension noise, drivetrain noise, exhaust rattles, engine bay noises.
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No major problem has been reported
No major problem has been reported
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No major problem has been reported
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No major problem has been reported
The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.
Pressure loss on your vehicle? U3576 flags a Stack Differential Pressure Sensor circuit fault—possible HVAC failure. Scan, inspect wiring, replace sensor.
Coolant mixing valve sensor fault lights up on your vehicle—risking overheating. Scan U3575, test the sensor, and promptly reprogram or replace it.
Coolant temperature spikes or no heat in your vehicle? U3574 signals a faulty Coolant Mixing Valve—run a module scan and arrange reprogramming or replace.
Engine overheating or coolant warning on your vehicle? A faulty coolant mixing valve control circuit can cause temp loss—scan, reprogram or replace now.
Temp gauge spikes and overheating on your vehicle? U3572 means Stack Outlet Coolant Temp Sensor 2 circuit fault—scan or replace to prevent engine damage.
Temp gauge spikes and overheating in your vehicle? Faulty Stack Outlet Coolant Temp Sensor 1 can overheat engine—scan circuit and schedule module repair.
Coolant temperature warning on your vehicle? A Stack Inlet Coolant Temperature Sensor Circuit can cause overheating—scan, test and replace/reprogram.
Warning light or loss of power from your vehicle’s Anode Multifunction Valve? It threatens system reliability—scan the code and replace the valve promptly.
Your vehicle flashes U3568—Anode Multifunction Valve control circuit fault, risking loss of function. Scan, test the circuit, then reprogram or replace.
Power loss or boost warning in your vehicle? A faulty Anode Inlet Pressure Sensor 2 circuit can trigger limp mode—scan, test wiring and replace sensor.
Fuel pressure warning on your vehicle? A faulty Anode Inlet Pressure Sensor 1 circuit can cause erratic fuel delivery—scan the code, test the sensor, an…
Hydrogen pressure warning on your vehicle? Faulty Hydrogen Supply Line A Pressure Sensor 2 circuit can cut fuel‑cell output—scan and replace the sensor.