QuestionQUESTION: My 2000 ford ranger, 4.0L v6 over the past few months has had fuel injectors go out. I decided to replace all of them. Recently after I replaced all of them I had another one go out. I have come to the conclution that it has to be electrical. My mechanic has run all diagnostic tests on it and has found nothing wrong with the computer or wiring. After they put a new injector in the check engine light turns off and it runs fine again for about 2 months till another injector goes out. What could be causing this problem? Is it my computer system? Is it possibly a faulty wire? Please help me cause obviously my mechanic can't.
ANSWER: hey there, sorry to hear you are having problems. I dont think you will find anything wrong with the computer system, you will see other signs of failure, i Do need to know the code that is stored in the computer triggering that check engine light. get back to me when you have that code available, I do fear that the mechainc is installing the wrong kind of injectors, i will be able to tell with that code, talk soon
Chris
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QUESTION: I talked to the mechanic and he cant remember the code number off hand but he said it was the code for a faulty injector. I have had to replace the #4 cylinder injector 3 times now, they have done tests on the computer twice now and can't find anything wrong with the wiring or computer but the mechanic said he drove it to test it and it started shuttering while accelerating again. he told me that they put the same fuel injectors that come stock with the truck.I forgot to tell you that when this problem started, when I would let my truck warm up in the morning, I could hear one of the cylinders not firing then it would start firing and then stop firing and a few seconds latter start firing again. It would do this every time I would start the truck up. I was able to hear this through my exhaust cause I have a flowmaster on it.
Answerhey again, well this sounds like a very rare problem that even i have never seen befor, I need you to have the following checked, have your mechanic do pin tests or pattern tests on the cam, and crank sensors. the crank is a reference point for ignition timing for the cylinders and the cam sensor is the reference point for the fuel injectors, make sure the voltage is steady and the charts are normal. also when the enngine is misfiring have hime use a N.O.E.D light on the injector wires, this will show if there is a pulse going to the fuel injector, only on Ford computers can this tsting go more into depth, our computers are made specifically for tests other scanners cant do and these are not for sale to the public. I hate to say this but you may have saved a little bit more time and money if you just went to the dealer to have them figure out something as complex as this, but if you want let take it to your mechanic and get him to take those readings and let me know waht happens. good luck
Chris
