Car failed smog, code P1493, the ambient temp sensor. Replaced by a mechanic, with the part bought at Auto Zone. We ran the car for less than a day and the check engine and battery lights came back on, about six and half hours after part was replaced. What else could be causing the issue?
SOURCE: Check engine light
A multi misfire may mean that one or more of the following has happened:
Faulty spark plug or wires, Faulty coil (pack), Faulty oxygen sensor(s), Faulty fuel injector(s), Stuck/blocked EGR valve / passages, Faulty camshaft position sensor, Defective computer.
The engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wire, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the the problems were faulty fuel injectors.
Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.
Good luck and hope this information helps, keep me posted, be glad to help you get the truck running 100% again. Not sure if your running a K&N air filter, and if you are there may be a flim of oil on the MAF sensor that is making you run lean. You may want to spray down the MAF sensor with a can of MAF cleaner.
SOURCE: p1493 code
If you are running any extra systems, ie amps, subs, high watt speakers, etc. etc. you may need to get a better batter, like the blue. or yellow top one. check with auto zone.
SOURCE: Check Engine light. Misfire Cylinder 4. Keeps coming back
Dodge 2001 Caravan....check all the wiring hhorness for all the injectors they always melt....and possibly yu will need a nes ecm...i have fix two caravans with the same codes and both had to have the injector wires replace with the ecm....good luck
cyber1
SOURCE: 1994 Dodge Dakota. Check
Go to AutoZone have them put it on there computer and clear the code....its FREE
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