That is like a million to one shot. The problem, if any, must lie with some part of the circuit that all 3 injectors have in common. Maybe they all share the same ground.
Capiche?
Not usually. They use the same power source but are grounded at different times by the engine computer.
Its possible one bad injector could damage the others, but that rarely happens.
An injector is an electric valve with a small coil and magnet inside.
I'm stumped. Was getting codes for 2 4 6 misfire and the injectors replaced plugs and found number 6 coil melted. I ended up replacing 2 4 6 coils. I looked over the wiring to the injectors. Now I'm thinking got to be a module or computer
Well you have to be careful - a code 302 just means cylinder two is not producing power. If you have injector problems you should also get injector codes. Same thing with coil problems. You could check each injector for resistance if you have injector codes.
Trouble codes are a good start but seldom tell you what the actual problem is.
P0202 p0204 p0206 p0300
The 300 code is a random miss and the others are for injector circuit problems. That means the problem could be the injector or the wiring or the ECM that controls it. If the injectors ohms test ok, and no problem is found with the wiring, it could be a driver inside the ECM.
Its almost never three injector failures at the same time, unless one shorted to ground and killed the others with it.
I'm beginning to think ecm. But I will check the injectors first thanks for the help
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The fuel injectors are independent of each other hence all three would not fail at the same time.
What is likely is that the +12DV supplied to each bank is common to three injectors. Each side has a separate fuse see attached wiring diagram. Find the fuse, replace and try again. If fuse fails check each injector for resistance. The one that is shorted is bad.
You can disconnect all three by removing the electrical plug. Replace fuse and plug each injector one at a time and check the fuse each time. If the fuse blows again replace the defective injector
If all are OK check wiring harness for shorted wire.
Hope this helps?
Testimonial: "I went through the fuses they seemed good. I gotta wait till tomorrow get my voltage meter from work. Now when you say disconnect the injectors you mean at each injector? I seen a wore harness with plug but I assume that is for all 6"
There appears from the wiring diagram two banks of injectors each bank of three has their own fuse. I don't know where the fuses are are located but assume that they would be in the power distribution fuse/relay panel under hood.
With the meter you should be able to measure the 12 volts at each injector and confirm the problem
A failed fuse can fool you. Use a meter to verify continuity for each suspected fuses.
Thanks for your help. Greatly appreciated
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