Can I swap to fuel injection myself or do I need a professional shop? How big of cam can I use? The injectors are pulsed on and off and the width of the pulse is lengthened or shortened as required. One of the best ways to retrofit fuel injection is to still take advantage of the research General Motors put into it and find a used factory system. Why should I swap to fuel injection? This pump is recommended for all vehicles with in-tank pump mountings. Code 52: Fuel Calpak Missing. Painless or Painfull, try our Harness Here we will compare Apples for,Apples or will we?. Unlike batch fire injectors, these injectors are not opened several at one time, but one at a time to allow more precise control of air fuel ratio.
You can also use the turbo 350 and 400 transmissions. What is the ninth injector? Air passages are larger to enhance volumetric efficiency, hollow valve stems, aluminum roller rocker arms and stronger valve springs have also been added. How do I get a speed density computer? These bolts are part of special clips that slide and lock into various slots in the housing that allow for different mounting options. All Corvette units were 350s. The accompanying sidebar Sensor-Tivity Training will outline what the sensors are and what they do. The air cleaner height and the air cleaner neck size could be an issue, but those are readily solvable the same as they are with a carburetor.
Some of these things can be omitted on some installations. Please note that some specifications are in lb. Both are located on the firewall in the engine compartment, just behind the battery on the drivers side. Summary: If you have a no start condition or if the L-98 starts and then dies, check the above items in sequence to see if all the events are occurring as required. I'm here to share information with folks, but I did the work to take the pictures and write this site, so if you want to use my stuff, credit me some sane way. Today, the majority of new cars dont require a tune-up for 100,000 miles.
The A slot is the diagnostic slot and the B slot is the ground slot. The polished finish looks good when freshly polished, but you have to maintain it to keep it looking good all the time. An electric pump is definitely required as referenced above for all Port Injection systems. If your engine displays a trouble code. How much should I pay for a unit? Code 46: Vehicle Anti Theft Fault. Can I swap to fuel injection myself or do I need a professional shop? If you should get a check engine soon display.
Make sure you ground yourself before messing around inside the computer - static electricity can be deadly to sensitive and often expensive electronics. But, just as a high- flowing carburetor can be too big for a mild to stock engine, so can the fuel injection. One idea I had would be to use spacers that would go under the existing intake manifold that would have injector bungs in them and use a throttle body on top of the original intake manifold. As they say, you get what you pay for. Although carburetors haven't been used on new cars since the mid-'80s hot rodders haven't moved as quickly.
The wiring for these systems are not interchangeable, without modifyingthe wiring harness. This code will be flashed three times. Nothing could be further from the truth, but its a tough sell to nonbelievers. Throttle Body The throttle body is an important piece. The only adjustment is idle control, and this too is factory set. They have new performance screens and all other parts to service the injectors. This is called an injector pulse width.
Parts Car I went out and got a to use as a parts car for what I needed here. Code 72: Gear Selector Switch Circuit. The 1227727 computer was used in both V6 and V8 models - most notably in the Corvette for 1990 and 1991. That would definitely look cool, but would be a bear to create for someone with limited fabrication skills such as myself. Make sure to measure your actual hood clearance to be sure, though. The '89-up computer fires all eight injectors right on top of the valves so that you get better cold starting.
Go too big and the torque will start to drop. Why should I change to speed density? Intake tubes runners are interchangeable for all model years, however the left intake tube through 1988 has a mounting for the cold start injector, for 89 and up this mounting is deleted. In the first picture you can clearly see the weather seal the is crimped onto the wire and terminal assembly as part of the wire crimping process. Fuel Line Nuts 20 lb. Can I mount the computer in the engine compartment? The familiar feedback loop of the oxygen sensor tells the computer when the desired air fuel ratio is reached, and idle speed continues to be controlled by the idle air control valve. Code 14: Coolant Sensor Circuit Low.
That means I am automatically heading to the aftermarket or to a custom fabrication source for the intake manifold modifications and the matching custom fuel rails I will need. 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. In 1989 the cold start injector was deleted from the system. What is the ninth injector? A copy of that picture is shown below with the specific part I'm interested in called out. Our C3 Vette harness is a harness designed for a easy installation and No need to pass thru fire wall other than for service light, and brake signal if 700.