So we decided to take another look at a few of the differences that you should be aware of and what to look for when scouting the junkyards for one. A scan tool is generally the best way to troubleshoot engine problems and with the 1994 and later Corvette, it is virtually mandatory. Do the research, ask all the questions, and decide for yourself. Note that this is a 20% improvement over another proven form of fuel injection. The last box in the tree will have the problem and how to correct it. The older units can be converted to the more desirable speed density by changing the harness and computer for classic truck retrofitting applications. Most parts interchange, but not all.
Make sure you ground yourself before messing around inside the computer - static electricity can be deadly to sensitive and often expensive electronics. Can I disengage the ninth-injector cold-start function? The simplicity of this system makes it easy to spot all the specific components. Code 33: Mass Air Flow Sensor High. In the beginning it would not run after it warmed up. Do I need to use a special fuel pump? Distributors are not interchangeable for these different engines.
Code 25: Intake Temperature Sensor Circuit High. A Mass Air Flow sensor has an extremely fine wire inside its bore. Note that this is a 20% improvement over another proven form of fuel injection. Can I disengage the ninth-injector cold-start function? Using the factory wiring harness can be cumbersome due to many nonessential connectors. I found that using a small paper clip works well, but I had to sand the paper clip to make it slightly smaller in diameter so it would fit inside the space in the connector.
They work okay if properly mounted—which is close to the tank away from heat. The wiring harness only has four wires to hook up ignition switch, fuel pump, starter, and ground. This way, the injectors could be sized small enough to be more easily controlled at idle. Fuel Injection Specialties Telephone: 210. Sometimes the computer carries 16197128 or 16198260, but they should all be functionally interchangeable for the purposes of this swap. This is trivial to change when you are making and wrapping your own wiring harness - just lay out the wires as needed and tape them up as you go.
At this time the engine is operating in open loop mode and will continue to do so until the engine warms up. The Corvette units are the same as the F-body units except that the fuel-rail fuel inlets are on the passenger side, and all Camaro fuel-rail inlets are on the driver side. In 1985, the Corvettes and Camaros used an iron small-block cylinder head. If I choose to wire the fuel pump relay without using the oil pressure sensor, that's one more thing I don't need to hook up. Code 24: Vehicle Speed Sensor Circuit. An engine is like an air compressor.
Swapping to fuel injection has many advantages. Speed density also provides better mileage, performance, and drivability. There is a Shraeder valve on the passenger side fuel rail near the rear of the engine and if you measure the pressure there after the pump runs, you should see between 40-42 pounds of pressure. Pressure Regulator Bracket 44 lb. A 30 % increase in horsepower, torque and fuel economy is seen over carburetion.
The wiring for these systems is not interchangeable, without modifying the wiring harness. Using the 1985-89 engine, the computer, prom, and knock sensor will have to be changed to 1990-92 components. Your hub for horsepower Get first access to hit shows like Roadkill and Dirt Every Day Join free for 14 days now Most people have heard that a mass air flow sensor is more desirable when changing the cam or making engine modifications. Please note that some specifications are in lb. This pump supplies 35 psi regulated fuel pressure to the Bosch style fuel injectors, and enough volume to handle all the requirements of the engine while under load. Some of these things can be omitted on some installations.
Look for computers with these numbers 1227730, 16198262, 16196344, and 8889196 and weather-proof computer 1227727 and 16198260. Specializing in website content and design for the automobile enthusiast, he also has many years of experience in the auto repair industry. Anything above that it backfires and bogs down. Computer The computer I chose is computer part 1227727. Code 22: Throttle Position Sensor Circuit Low. This was the 1st year for Sequential port Injection in these cars.