I replaced the brush pack in the alternator, had autozone test and charge the batery, and replaced the ignition coil. The truck still wont start. To test for fire, i pulled one plug wire, placed a screwdriver into the wire end, and held the shaft against the block while turning over the ignition. no spark, nothing.
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The spark and fuel system needs to be inspected.---------
The spark plugs are getting fouled or very loose, can cause sputtering problem.Inspect the spark plugs and coil packs.The spark plugs gets power from coil pack.If the spark plugs are very old and dirty, then it needs to be replaced.---------------
The **** problem also relates to faulty worn out spark plugs or clogged fuel filter or low fuel pressure or problem with ignition coil pack.-----------
When coil pack stops giving power to spark plug the car will **** while driving.----------
So very first thing you get tested is spark plugs and ignition coil packs.If they are tested good, but looks very dirty/ worn out, that can also be the reason.----------- But if spark plugs and ignition coil tested ok and cleaned properly, but still same problem, then get fuel pressure tested.If fuel pressure is low, the fuel pump and fuel filter are the cause of problem.-----------
Also one more thing, " IS there check engine light coming ON dash" ? If yes, then get the car scanned at autozone service center.Its absolutely free to get car scanned at autozone.They do it for no charge.-------
In scanning you will get error codes, as per error codes, it will point towards faulty part, causing this sputtering and jerking problem.-----------------
But if there is no check engine light ion dash, then get the above mentioned possibilities checked.That will help.Thanks.Helpmech.
If by 'no fire' you mean no spark, check all of your fuses, and have the ignition module (located under the coil packs) checked. Autozone can usually check the ignition module for free. If it has spark, it could also be the fuel pump going out.
Looks like you are having a battery problem, your battery is weak and not able to hold the cars charge. When u let the car sit the battery will lightly charge itself but once you turn it on and drive it begins to drive, the cars accesories will drain out the battery and the alternator will do its job by charging but the battery is just too weak or it could be the alternator not putting out enough amperage to charge the battery sufficiently, the alternator could be seizing on you when u are driving, stopping and rotating off and on, if thats the case then your car will shut off. I would do a load test on your battery then if that checks out ok then go for the alternator. The load testing tool can be purchased at any AutoZone or Lappens, Pep Boys etc..