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'04 Ram 4.7L injectors how they work
It is really a simple set up that makes a car run. The components involved are as follows,
Computer, temperature sending unit, oxygen sensors, throttle position sensor, fuel pump and a few others that help complete the process. The fuel pump keeps the fuel pressure to 44-55 psi . The injectors are in the closed position and can only be opened with an electrical pulse. The pulse is sent to the injector by the computer. The length of the pulse is determined by the information given it by the temperature sending switch and the throttle position sensor. The computer see how hot the engine is and how much throttle the driver wants. Then it sends the current to the injector, pulse time, that opens the injectors for milla seconds. The oxygen sensor measures the amount of air in the exhaust and sends that result to the computer which analyzes all the information and makes changes to the pulse time and makes the changes to have a fuel mixture of 14.7 to 1 ratio of air to fuel. This happens about 20 times a second depending on your speed.
2004 Dodge Ram
on Feb 19, 2019
My 2004 dodge ram turns over but sounds like is not getting fuel what can i do
I know I had the same problem with my 2004 3500 Cummins...try turning the key to the crank position and let it go (this will allow the fuel pump to run for about 25 seconds, basically priming the pump). Try starting the truck again, if it cranks over and sounds rough this is normal. Let it run until it goes back to normal. If you cannot crank the truck over keep repeating the process above (making sure you turn the key to the off position after each time you try). **This information I found out of my Chilton Dodge Repair Manual**
2004 Dodge Ram
on Feb 21, 2014
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