1999 ford ranger 4x4 4.0L motor is skipping replaced camshaft sensor,crankshaft sensor,new coil pack,new plugs,wires,and replaced mass air flow sensor,now its still skipping and codes pulled are showing 1151,1152,and 1309 which is showing engine is overloading fuel to motor,and engine misfire

sounds like you didn't get the wires on the correct plugs .

Hi Paula,

You didn't mention if you changed the plug wires.

You mentioned replacing the camshaft sensor. Have you checked the Crankshaft Position Sensor? Or the Mass Air Flow Sensor (may need cleaning)? Or the Throttle Position Sensor?

TIMING BELT BROKEN!!

Check and see if you have a Camshaft sensor. Also check your wires to the crankshaft sensor connector to see if they are broken. Go to Autozone.com for a wiring and fusebox layout for free. Just register your truck.

Could be that you have a relay for each coil and one is bad. If so, sometimes Ford uses the same relay many times and the horn relay may interchange. You can use the horn to test the switched relay.

Sparkplugs are not the only cause for a misfire... there could be any number of things.
- The cause of misfire should be fairly easy to pinpoint if the problem is present all the time. A quick look at the spark plugs can tell a lot. Signs of arcing on ignition coil, distributor cap or rotor can also point to a faulty part. Basics, such as the compression, timing and fuel pressure need to be checked.
- A faulty on-plug ignition coil is typically identified by swapping the coils between the cylinders and checking if the misfire moved with the coil or stayed at the same cylinder. If a bad ignition coil is replaced, it's good idea to change all the spark plugs as well.
- The engine might need to be checked for vacuum leaks. The short term fuel trim (STFT) and long term fuel trim (LTFT) need to be checked with a scan tool to see if the air/fuel mixture is not too lean. Often a bad mass air flow sensor causes the engine to run lean causing misfire.
- Pressure testing of the cooling system might be needed to check for a leaking head gasket.
- Valve adjustment may need to be checked, as valves that are out of adjustment can cause misfiring at a cold start, which is, a fairly common issue in Honda engines.
- When the misfiring happens only at idle, the EGR valve and purge valve need to be checked, as either one could be stuck open.
- Faulty mechanical valve train components like worn camshaft lobes or stretched timing chain can also cause the engine to misfire; they too might need to be inspected carefully.
- Sometimes a broken or damaged tooth at the crankshaft or camshaft sensor gear can be the source of misfiring; checking the sensor signal with an oscilloscope can help if crankshaft position sensor or camshaft position sensor are suspected.

Have you checked for intake leaks?

means misfire in #5 cylinder. found this for you. hope this helps
Common Problems That Trigger the P0305

• Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
• Incorrect ignition timing
• Vacuum leak(s)
• Low or weak fuel pressure
• Improperly functioning EGR system
• Defective Mass Air Flow Sensor
• Defective Crankshaft and/or Camshaft Sensor
• Defective Throttle Position Sensor
• Mechanical engine problems (i.e.-low compression, leaking head gasket(s), or valve problems

Common Misdiagnoses

• Fuel Injectors
• Oxygen Sensor(s)
• Power Train/Drive Train problem

Catalytic converter or fuel pump.

try changing the coil packs