What would cause cylinder 2 and 3 work correctly but no spark on 1 and 4 coils are good what could cause this would it be the module or the computer?
Trust me your 1/4 coil is junk. you dont need all three
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Your passlock security is activated or failing. Many things can cause this. 1 or more of three things. The key chip is bad, the ignition cylinder that reads the key is bad, or the TDM (Theft Deterrant Module-computer that reads the info) is bad. All of which can shut down your vehicle by keeping it from starting, or shutting down while driving.
It is possible. Anything that could cause a computer to quit working can cause a no bus message. The "bus" is the system the computer on the vehicle use to communicate. No bus means that you can't communicate with any of the modules and the modules can't communicate with one another. You either have a bad module or an interruption somewhere in the bus.
did you changed your thermostat? You MUST keep around 195 degree thermostat in the vehicle at ALL TIMES due to the computer system. The ignition module usually gets hot due to corroded electrical connections at the ignition module and or the module is HEAT SENSITIVE and needs to be replaced. (plug wires) Ignition misfire can produce a variety of driveability symptoms including hard starting, rough idle, hesitation....
If you are talking about all of the plugs you have some wire tracing to do. The coils are on each cylinder and have a wire harness that goes to each coil. Trace that harness back to where they all join together and check that the wires are plugged in properly to the rest of the harness. From there trace it back to the computer and make sure that plug is correctly plugged in and…
It means you have a mis-fire on multiple cylinders. If it was only one cylinder it would have a number other than 0 like for example: P0301, that means cylinder 1 is mis-firing, but yours has a zero which means more than one cylinder is mis-firing. If I were you I would basically just check (with a volt meter) the Ignition Control module (the plate the coils sit on and connected to) and see if…
What would cause the cooling fan to not turn on on an 86 4 cylinder Taurus Fan and relay module are both new and temp gauge works?
I was told the computer was bad. I would test the computer first. It may also be the ignition module. I had the same problem with my '94 Mazda truck. It would be running fine and then just shut off. Also had trouble starting up every now and again. Usually i could just tap on the ignition module several times and it would start right up.