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Re: 1999 Dodge Ram 1500 Van. No injector pulse on a NOID...
If your 1999 Dodge Ram 1500 Van is not producing an injector pulse until you add starting fluid, and then it fires up and the injector pulse returns, there may be a problem with the fuel system. Here are a few steps you can try to troubleshoot the issue:
Check the fuel pressure: A low fuel pressure can prevent the injectors from functioning properly. Use a fuel pressure gauge to check the pressure at the fuel rail, and make sure it is within the specified range for your vehicle. If the fuel pressure is low, there may be a problem with the fuel pump or fuel filter.
Check the fuel injectors: The fuel injectors may be clogged or malfunctioning, preventing them from delivering fuel to the engine. You can try cleaning the injectors, or have them tested at a reputable repair shop to determine if they are the source of the problem.
Check the wiring and connections: Make sure that all of the wiring and connections to the fuel injectors are secure and in good condition. Any damaged or loose wiring can prevent the injectors from functioning properly.
Check the engine control module (ECM): The ECM is responsible for controlling the fuel injectors and other engine functions. If the ECM is faulty, it can cause problems with the fuel system. You can have the ECM tested at a reputable repair shop to determine if it is the source of the problem.
If these steps do not resolve the issue, it is best to have your vehicle diagnosed by a professional mechanic. They will be able to diagnose the problem and recommend the appropriate repairs.
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Spray some starter fluid into the throttle body. If it starts, then you have a fuel problem. Check the pressure with a gauge. Should have depending on which engine, 42 psi. If you do not have that, then probably fuel pump. If you have pressure, then then possible injectors are not firing. Check the fuses for the ignition system. If you have a noid light then check to see if the injectors are pulsing. Hook up a scanner and see if computer is receiving information from crank sensor.
The code that came up is for a camshaft sensor. The cam sensor usually controls injector pulse. Pick up a noid light at your local parts store which should be very cheap. Connect noid light to plug at injector and crank vehicle. If the noid light lights up, then you know that you are getting a signal to injectors and your cam sensor is working. If it doesn't light up, it's possible that your new part can be defective ( it is possible). Because you have a Chrysler product and a no start condition, check to see if you have spark causing the no start. If you have no spark, check your crankshaft sensor. Chrysler products are known for crank sensors to go bad. If you have spark, further testing is required. I hope this helps and have a great day.
Durangos are known for crank sensors to go bad. Make sure that your battery is fully charged so you know that isn't an issue. If you don't have the proper equipment, try this.. Your going to need someone else's help for this. Pull one of the spark plug wires, using a screwdriver, put the tip of the screwdriver into the wire and hold the shaft of the screwdriver about a quarter inch away from a good ground source. Have your assistant turn the key and crank the engine while you check to see if you have spark. If you can, visit your local parts store and ask for a noid light that will fit your vehicle. It's usually about $10-$12. The purpose of the noid light is to check for injector pulse. Disconnect the plug for the injector and connect the noid light in it's place. Once again, crank the engine and check to see if the noid light lights up and pulses. If the crank sensor is bad, you should have no spark and no injector pulse. Replace crank sensor if so. If you have spark, check for fuel and or fuel pressure. Listen for the fuel pump to energize when the key is turned. Also try spraying starting fluid into the throttle body. If it starts, your having fuel issues. I hope these tips help. Good luck.
First question is are you getting spark to the plugs ? Then are you getting fuel to the injectors, and injector pulse ? Have you checked the ASD relay ? I would check those things next.
Hi there: You will have to pinpoint what the engine is missing... spark / fuel / compression
All
three of these are tested when the engine is being cranked over. There
are two way of checking for fuel. Fuel pressure and fuel trigger. Both
are very important and must be present for the engine to start. Fuel
pressure is self explanatory. You just hook up the gage and see what the
reading is. Fuel trigger is check with a noid light. The injector gets
unplugged and the noid light gets plugged in to the injector clip. With
the engine cranking over, this light must blink. This is the signal to
the injectors from the computer. You can have all the fuel pressure in
the world, but it wont matter if the injector is not pulsing gas into
the cylinder like it should.
Compression tester,
spark tester, fuel pressure gage and noid light are all accessible at
your local auto store. All three tests play a very important part in
diagnosing a no start condition. Be extremely careful when doing these
tests.
Hope this helps; also keep in mind that your
feedback is important and I`ll appreciate your time and consideration if
you leave some testimonial comment about this answer.
You need to find out if you have enough fuel pressure, and if you have injector pulse. A noid light is a simple kind of test light that you can get at a parts house to test injector pulse. Unplug an injector and plug the noid light into the harness. Have someone crank the engine, if it flashes then your injectors are firing. Check all the fuses under the hood. You should have 55 to 60 psi fuel pressure.
You need to use a LED type test light for the injectors or a Bosch style Noid light for the injector. To test the cam/crank sensor signal you either need a scanner to read them or a lab scope to show you a signal. The pickup plate in the dist handles the injector timing, the crank sensor provides a RPM signal. They both feed the computer information for ignition timing. Good fuel pressure, injector activity(Noid), and good spark out of the coil. The coil is what I replace the most of.
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