Question about Cars & Trucks
No power to the injectors, no injector driver (ground side) due to a burned out ECU
Posted on Aug 09, 2017
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Posted on Jan 02, 2017
SOURCE: no pulse at injectors
The normal way that injectors are controlled is via the permanent application (ignition on obviously) to one side of the coil that operates the enclosed piston, and the precisely timed application of ground (negative) to the other side of the coil.
The transistors that control this switching under the command of the engine computer are typically contained within the computer itself.
Measuring the voltage at the injectors is not productive since the common multimeter is incapable of detecting the very short pulses that activate the coil. Some kind of visual means would be needed to observe this pulse such as an oscilloscope or an engine analyzer equipped with a 'scope.
It's unlikely that all of the switching transistors (or the injectors) have failed simultaneously so either the computer has a problem or there is no fuel being delivered to the fuel rail that feeds the injectors. You should find a pressure regulator that sits between the fuel line coming from the tank that controls the fuel pressure for the injectors. This device seem to be a sore point in many vehicles and can make it appear that the injectors are not working. Many fuel rails have a fitting similar to a tire valve to allow the testing of the pressure being delivered. I would recommend you check this before assuming that the injectors are at fault.
Posted on Nov 14, 2008
injector pulse is just controlled by the ecm or computer as some would say,u said u replaced wires? did u have a fire or melt wires? ecm is known to go bad on these,had a few of these trucks back in the day.
Posted on Feb 16, 2009
This sounds like a main relay problem here is a diagram its located under the dash under steering column its the brownish -orange box in the picture. http://www.tegger.com/hondafaq/mainrelaylocation/7-main_relay_closeup.jpg Good luck and thanks for using FIX YA
Posted on May 15, 2009
The crank sensor is what pulses the ijectors,and makes the spark,so I would start at the crank sensor.Let me know how you come out.Check for any blown fuses also.Ecm fuse would cause this,but it may be called anything ,so check all fuses.
Posted on Sep 10, 2009
SOURCE: how do i get to feul injectors
YOU HAVE TO RELIEVE FUEL SYSTEM PRESSURE.REMOVE THE INTAKE MANIFOLD COLLECTOR.REMOVE VACUUM HOSE FROM THE FUEL PRESSURE REGULATOR.REMOVE FUEL HOSES FROM THE FUEL RAIL.REMOVE FUEL RAIL BOLTS AND INJECTOR HARNESS CONNECTORS.REMOVE INJECTORS AND FUEL RAIL AS AN ASSEMBLY.REMOVE INJECTORS FROM RAIL BY PUSHING THEM OUT.REMOVE DISCARD FUEL INJECTORS ORINGS REPLACE WITH NEW ORINGS LUBRICATE NEW ORINGS WITH CLEAN ENGINE OIL.YOU HAVE TO BUY ORINGS FOR FUEL INJECTORS AT THE DEALERSHIP.BESURE TO TAKE OLD ORINGS SO WILL GET THE RIGHT SIZE ORINGS.
Posted on Mar 20, 2010
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