2000 Dodge Dakota 2000 Dakota Running Very Rough and Stalli

2000 DODGE DAKOTA
192,000 MILES • V8 • 4WD • AUTOMATIC
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KENO-MAN
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I have a 2000 Dakota 4.7L A/T 4x4 192,000km's. It suddenly started running very terrible. I shut it off running great, ran into the store and came out 5 minutes later. It started no problem but then instantly started running very rough and stalling. I managed to get it home by holding my foot on the gas and brake. I connected my OB tester up and the only code that came up was P0202 Injector circuit/open cylinder 2. I changed the injector, and still the same but found that both injectors are working properly connected to the truck. I've disconnected the battery for 2 days and still no change.
Any idea's.?
Jun 14, 2010 at 3:40 AM
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JACOBANDNICKOLAS
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Did you check the power to the injector with a noid light?

Let me know.
Jun 14, 2010 at 4:10 AM
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KENO-MAN
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I didn't but my repair shop said the injector was working fine, he couldn't understand why the code was coming up.
Jun 14, 2010 at 4:26 AM
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JACOBANDNICKOLAS
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If the injectors are good and there isn no problem with them, I would recommend checking for vacuum leaks and checking fuel pump pressure.

Also, have the check engine light shut off and see if it comes back with the same code.
Jun 14, 2010 at 6:41 AM
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KENO-MAN
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I haven't yet checked the fuel pump pressure but I have cleared the codes a few times. It continually comes back with P0202 after a few minutes of running. My repair shop said it also came up with engine speed sensor, but I haven't seen that one yet. What happens if the PCM fails, will is still run or run rough.? If I can keep it running long enough, it still seems to have a lot of power.
Jun 14, 2010 at 7:03 AM
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JACOBANDNICKOLAS
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Yes to the PCM. It could still run, but I don't think that is where the problem is coming from. (not saying it couldn't be that) Some of the things that could cause this code are a bad injector. This is usually the cause of this code but it doesn't rule out the possibility of one of the other causes such as an open in the wiring to the injector, short in the wiring to the injector or a bad PCM

So yes, the PCM could be the cause, but if the injector is working, like your mechanic said, I would thing there is a wiring problem. I would ask if they checked all of that before replacing the PCM.
Jun 14, 2010 at 7:36 AM
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KENO-MAN
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The ring fell off the intake valve on cylinder two.
Jun 23, 2010 at 2:33 AM
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JACOBANDNICKOLAS
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Do you mean the valve spring retainer?
Jun 23, 2010 at 3:09 PM
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KENO-MAN
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No, the ring that the valve seats into when it closes.
Jun 25, 2010 at 2:56 AM
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JACOBANDNICKOLAS
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That isn't good. Let me know if you have other questions.
Jun 25, 2010 at 6:37 PM
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