My 96 neon sputters when driving, but when I first drive it in the morning, it is fine for about 20 or so miles. Then starts sputtering, hesitating or doing what feels like are light misfires. The spark plugs, wires and ignition coil are new and I have put SeaFoam in the tank after the Chevron fuel injector/system cleaner didn't work to clean it, but it still happens. It felt like it got better for about 10 minutes when I cleaned it, but then it started again. When I originally checked the code it was random misfire p0300 which wasn't of much help because I can already feel that. I had replaced the spark plugs, wires, coil, fuel pump, cleaned fuel filter, pcv and now it is showing a p1391. So here are my questions: Where is the PCM located (in general) would I be able to change that myself? Where and How do I change the crank position sensor? Do I have to replace the head gasket when I replace this sensor? Which likely is it most likely to be?
SOURCE: auto question,I have an 96 Dodge Ram w/ 5.2L V8
I would check the injector. Pull the plug and check for corrosion. Use on ohm meter to check the injector. The resistance should be 11 to 15 ohms. Check it against another injector. they should be close. You can also check the injector plug. best to use is a noid light, but you can use the meter. set it to dc volts to check. the numbers should jump everytime it fires. since you got a 300 and 301 misfire it tells me that you have an intermitant misfire in cylinder 1. The other sensors are still good don't replace them. The coil is still good, because when it starts to go, it will have misfires on all cylinders or will not work at all. The crank sensor is the one that detects the misfire, again don't replace it because it's not bad, it's just doing it's job. If the injector and harness check out good then I would start check the cylinder for compression and mechanical problems
did you have the ignition coil checked? the coils on the chryslers like to go bad also causing the random p0300 code,
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I don't mind changing the parts, I just need to know where, how etc. I don't need diagnosis necessarily
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