On 4/18/2021 I was driving my 1991 porsche c2 on the 10 freeway in monterey park, ca when suddenly I heard a loud bang sound from the engine. I got off the freeway and stopped and found that the entire engine cooling fan had completely sheared off and broke apart along with the fan belts. Less than 5 years ago the same engine cooling fan had to be replaced because it broke apart. This fan also broke apart about 20 years ago! The current incident caused damage to the alternator and air conditioner compressor and the belts and small dents to the back lid.
The worst 1991 Porsche 911 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine1
Recalls 4
Steering: steering wheel/handle bar
- What is wrong
- A part of the steering column upper universal joint cracked during the manufacturing process.
- Risk
- This condition could result in noise and free play in the steering system and if left uncorrected, will result in loss of steering control.
- Remedy
- Dealers will inspect the universal joint for cracks and will replace cracked joints with new parts.
Recall number 96V147000 · Recall details
Electrical system: wiring: fuses and circuit breakers
- What is wrong
- After the engine has been turned off, the rear heater will automatically operate in order to dissipate heat in the engine heating system. During this operation, the resistor for the rear heater blower can become overloaded due to a binding or seized rear heater blower.
- Risk
- The overloaded resistor can create heat sufficient toignite the plastic air pipe to which it is connected, resulting in an enginecompartment fire.
- Remedy
- Porsche dealers will install a new resistor containing a circuit breaker.
Recall number 93V204000 · Recall details
Service brakes, hydraulic: power assist: vacuum: hoses, lines/piping, and fittings
- What is wrong
- The hydraulic brake pressure reduction valve causes the rate of hydraulic pressure reduction to slow down, which may result in the rear wheels locking-up even with the anti-lock brake system in operation.
- Risk
- Rear wheel lock-up may result in loss of vehiclecontrol and an accident.
- Remedy
- Porsche dealers will install a modified hydraulic brake pressure reduction valve.
Recall number 93V205000 · Recall details
Vehicle speed control
- What is wrong
- The ball sockets on the cruise control linkage can break, allowing the cruise control linkage to become detached on one end and jam on nearby components, which could impair throttle plate operation.
- Risk
- Impaired throttle plate operation could prevent theengine from returning to idle, resulting in unwanted engine speed and possiblevehicle accident.
- Remedy
- Replace the current plastic ball sockets with a new linkage using steel ball sockets, and lubricate the cruise control relay lever. Owners are advised not to use the cruise control until the modification is installed.
Recall number 92V142000 · Recall details
Technical service bulletins for the 1991 Porsche 911 92
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Special tools and equipment information for the Boxster, Cayman, 911, and Panamera
- Information for PIWIS tester update 42.300.050 & .052
- Instructions on manufacturers certificate for approved C20 engine oils
- Instructions on manufactures certificate for approved Porsche C30 engine oils
- Instructions on manufactures certificate for approved Porsche A40 engine oils
- Information for PIWIS tester update 42.300.040 & .041
- Information for PIWIS tester update 42.300.035
- Information for PIWIS tester update 42.300.030
- Parts information for parts withdrawal involving the glass roof
- Special tools and equipment information on PIWIS tester update 42.250.050
1991 Porsche 911 fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 3.6L 6‑cyl | RWD | 14-15 | 21-22 | 16-17 |
| 3.6L 6‑cyl | 4WD | 14 | 21 | 16 |
| 3.3L 6‑cyl | RWD | 12 | 20 | 14 |
What 1991 Porsche 911 owners say
Most recent owner complaints, unedited.
Compare the 1991 Porsche 911
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Questions about the 1991 Porsche 911
Is the 1991 Porsche 911 reliable?
Owners have filed 1 complaint about the 1991 Porsche 911, fewer than a typical 911 model year.
What is the most common problem with the 1991 Porsche 911?
Engine and cooling, with 1 complaint.
How many recalls does the 1991 Porsche 911 have?
4 recalls, covering steering, electrical system and service brakes, hydraulic.
What gas mileage does the 1991 Porsche 911 get?
Official estimates for the 1991 Porsche 911 range from 14 to 17 mpg combined. The most efficient version (3.6L 6-cyl, RWD) gets 14-15 city and 21-22 highway.
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