Mazda 1994 rx7 fd3s pulsation dampener failure. Caused loss of fuel and damage to wire harness. The fuel leaked onto and into the wire harness and caused the harness to become saturated, damp and brittle. I also had to pay to replace and install new pulsation dampener, wire harness, intake gasket and a few other parts do to the pulsation dampener failure. I also had to pay for labor. Total was around $1600.00 usd. I am not happy and I hear this damper fails all the time for my local dealer.
The worst 1994 Mazda RX-7 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine6
- Fuel system4
- Suspension3
- Electrical2
- Airbags1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine6
- Fuel system4
- Suspension3
- Electrical2
- Airbags1
- Body1
- Brakes1
- Locks1
Recalls 3
Service brakes, hydraulic: power assist: vacuum: hoses, lines/piping, and fittings
- What is wrong
- Oil mist contained in the engine intake air can collect over time in the brake vacuum check valve preventing the check valve from opening at the specified pressure reducing power assist to the brakes.
- Risk
- Brake performance can be diminished increasing the risk of a vehicle accident.
- Remedy
- Dealers will replace two vacuum hoses, including the check valve, with modified hoses.
Recall number 96V149000 · Recall details
Fuel system, gasoline: delivery: hoses, lines/piping, and fittings
- What is wrong
- Residual engine heat can cause premature deterioration of the fuel hose causing the hose to leak. Also, removing and reinstalling the deteriorated fuel hoses increases the likelihood of a leak.
- Risk
- This condition can result in an engine compartment fire.
- Remedy
- Dealers will install an additional control unit for the electric cooling fan. The fan will then activate after the engine is turned off when the coolant exceeds a specified temperature. The fuel hoses will also be replaced with revised hoses.
Recall number 95V069000 · Recall details
Engine and engine cooling: cooling system
- What is wrong
- The radiator cap pressure relief valve release pressure is set too high. This can cause the coolant to reach temperatures that exceed the thermal design limits of some components of the coolant system. Should this occur, engine coolant can leak collect on top of the engine.
- Risk
- If engine coolant leaks onto the hot engine exhaust manifold from the top of the engine, an engine compartment fire can result.
- Remedy
- Dealers will inspect the vehicles and if any vehicle exhibits coolant leakage or if the coolant level has dropped to the point where the coolant loss would be sufficient to trigger the coolant level warning system, components potentially subject to deterioration from overheating would be replaced. These parts include the water pump bearing housing, the water level sensor and radiator upper hose, the thermostat gasket, and all water hoses located above the engine. In addition, all vehicles in which those components are replaced would also have the cooling system and other systems that carry flammable liquids checked to make certain that engine overheating had not caused any problems in those systems. Any identified problems will be repaired. The radiator cap, filler cap, and filler cap body of all recalled vehicles will be replaced by newly designed parts.
Recall number 94V094000 · Recall details
Technical service bulletins for the 1994 Mazda RX-7 22
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Radio Unlocking Codes.
- In support of the new MRT distribution, Mazda will ship to dealers a new Dual Purpose Diagnostic Leak...
- In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer
- In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer
- Speedometer replacement procedure
- In accordance with federal regulations, follow the procedure listed below when replacing a...
- Battery test procedure requirements
- Speedometer replacement procedure
- Experiencing oil leak at rear stationary gear o-ring / on - car replacement procedure
- Information regarding seat belt extenders
1994 Mazda RX-7 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 |
|---|---|---|---|---|
| 1.3L 2‑cyl | RWD | 15-16 | 22-23 | 18 |
What 1994 Mazda RX-7 owners say
Most recent owner complaints, unedited.
Consumer states: the cooling fans do not come on after the vehicle turned off. The vehicle over heats unless the parking lights are turned on. It get to hot before the fans come on.
I have been informed that this is a major cause of engine fires. This should be replaced by the manufacturer. *jb ***dimsii ivoq entry posted after 12/12/02 cut-over to artemis****770782
This seems to be a common failure for this car. Not only is it an expensive repair, but from what I understand this 'pulsation damper' failure has lead to many fires in this car. I believe the problem is happening again and I hope I don't have to pay another $500 to have it repaired again. I think that because it is so dangerous and so common in this car, mazda should accept some of the responsibility.
I came extremely close to an engine fire. My engine bay was soaked with fuel. Now half the engine has to be taken out in order to fix this problem. I shouldnt have to fix this. The rx-7 has been around long enough to be able to come up with a suitable fix for this problem. I dont want this to happen again. It is very dangerous. Why is this not on the fuel system recall fix list. It is know to fail.
Common failure of fuel plusation damper results in fuel leak under hood and engine fire. Should issue recall and design strong part.
There was coolant leak from vehicle onto engine. Vehicle was not included in recall 94v094000. Dealer has replaced water pump, radiator hoses and gaskets. *ak
Stricker that latches to hood latch broke off from hood assembly. Consumer felt that hood may fly up while driving. Consumer has same problem as mentioned in recall 00e069000; but this vehicle was not included due to VIN.
Recall 00 e 069 000. Stricker has separated causing hood to stay open. Recall was issued for after market parts only.
Pulsation damper on fuel rail leaks fuel onto engine and wiring.
Compare the 1994 Mazda RX-7
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Questions about the 1994 Mazda RX-7
Is the 1994 Mazda RX-7 reliable?
Owners have filed 18 complaints about the 1994 Mazda RX-7, fewer than a typical RX-7 model year.
What is the most common problem with the 1994 Mazda RX-7?
Engine and cooling, with 6 complaints. Next is fuel system (4).
How many recalls does the 1994 Mazda RX-7 have?
3 recalls, covering service brakes, hydraulic, fuel system, gasoline and engine and engine cooling.
Was there a recall on the 1994 Mazda RX-7 engine?
Yes, 1 recall: 94V094000. Check your VIN to see if your car still needs the free repair.
What gas mileage does the 1994 Mazda RX-7 get?
Official estimates for the 1994 Mazda RX-7 range from 18 mpg combined. The most efficient version (1.3L 2-cyl, RWD) gets 15-16 city and 22-23 highway.
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