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I have no spark in my 1990 ford taurus. Am I right to think it is the crankshaft position sensor/ camshaft position sensor, EEC, or the wiring between them based on the details below? If yes, where ar
Ran out of gas, tried to restart many times- cranks but won't start, turned hazards on, returned filled gas- plenty, batt. now dead, charged and jumped- wouldn't start (did I blow the EEC/PCM if I charged with key in the ON position- for the hazads?), towed home. Checked fuel shut-off/ inertia switch- hadn't popped, removed fuel filter, primed fuel pump- 4-5 oz of gas came out, replaced filter, tested Schrader valve- seems to have sufficient psi, hmmmmm...?
Checked spark- no spark and plugs wet (what happened?). Took the ignition control module to O'Reilly's- everything passed, rented OBD- no codes, looked up test for ignition coil and misread the test- bought a coil without need, bought plugs and wires, replaced all three, tried the test again- I get a light on my test light at the (+) wire to the coil and the (-) wire to the coil, however, when I crank the engine the test light does not flash as the test said it should when connected to the (-) wire of the ignition coil. So, I am told to check wiring from EEC to ign. coil at the EEC looking for a constant light- couldn't identify wire and gave up on that. If the light had consant light there the wire could be deemed ok and now the driver/transistor in the EEC would need to be looked into through examining the powers/ grounds to the EEC, but more probably the crankshaft position sensor and the camshaft position sensor and then the EEC itself.
This is where I am now. I want to test the two sensors and I want to know if I have properly narrowed the problem down to the sensors, EEC, and wires between them using the ignitiion coil test or if something else could be wrong like a problem in the distributor (PIP sensor?).
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What your Explorer has is actually called the EEC-IV. It is sort of like an ECU. The EEC stands for "Electronic Engine Controls". Your EEC-IV Does this:
Powertrain Control Module (PCM)
Throttle Position (TP) sensor
Mass Air Flow (MAF) sensor
Intake Air Temperature (IAT) sensor
Idle Air Control (IAC) valve
Engine Coolant Temperature (ECT) sensor
Heated Oxygen Sensor (HO2S)
Camshaft Position (CMP) sensor
Knock Sensor (KS)
Vehicle Speed Sensor (VSS)
Crankshaft Position (CKP) sensor
The EEC microcomputer circuit processes the input signals and produces output control signals to the fuel injectors to regulate fuel discharged to the injectors. It also adjusts ignition spark timing to provide the best balance between driveability and economy, and controls the IAC valve to maintain the proper idle speed. The EEC is located in the engine compartment. Post your engine size and I can tell you where it's at.
Every engine has to have a way to know where the cylinders are and thus when to fire the spark plugs. Since your engine does not have a crankshaft sensor, the only means that the onboard computer has to know where the crankshaft is would be the sensor in the base of the distributor. This sensor monitors the position of the camshaft and thus can ascertain the position of the crankshaft as well. This, or the computer itself is the most likely culprit if you are failing to get spark.
You visually checked for spark and there was none? #3 and #4 show to be on same coil, each coil fires two plugs. Battery has a full charge? The red wire at coil pack is voltage, it has good voltage? Any applicable trouble codes?
The yellow wires with different tracer colors are grounds controlled by the pcm, one ground for each coil. Did you check voltage on ground wire engine cranking? I can't rule out a faulty coil driver in pcm. It's possible your old coil pack damaged the coil driver in pcm? If that is the problem, hope it didn't hurt the new coil pack.
P0340 - Camshaft Position Sensor Circuit Malfunction This indicates that a problem was detected in the camshaft position sensor circuit. Since it says circuit, that means the problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Don't just replace the CPS (camshaft position sensor) and think that will definitely fix it.
Symptoms can include: * Hard starting or no start * Rough running / misfiring * Loss of engine power
Causes A code P0340 could mean one or more of the following has happened: * a wire or connector in the circuit could be grounded/shorted/broken * the camshaft position sensor may have failed * the PCM may have failed * there exists an open circuit * the crankshaft position sensor may have failed
Possible Solutions With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try: * Visually inspect all the wiring and connectors in the circuit * Check for continuity in the circuit wiring * Check the operation (voltage) of the camshaft position sensor * Replace the camshaft position sensor as required * Check the crankshaft position circuit as well * Replace circuit wiring and/or connectors as required * Diagnose/replace the PCM as required
The Cam Position Sensor is located on the drivers side; the intake manifold is cut out where is sits on top of the engine block. Its black in color and has two 5.5 mm. screws that you'll be able to see.
Removal 1. Remove the engine front cover. 2. CAUTION: This pulse wheel is used with several difference engines. Install the pulse wheel with the keyway in the slot stamped 30 or30 RFF only (orange in color). Remove the ignition pulse wheel.3. Install the damper bolt. 4. NOTE: LH shown, RH similar. Remove the LH and RH spark plugs. 8.80 Page 2 5. Rotate the crankshaft clockwise to position the crankshaft keyway in the 11 o’clock position and position the camshafts in the correct position. This will position the number one cylinder at Top Dead Center (TDC). ^ Verify that the camshafts are correctly located. If not, rotate the crankshaft one additional turn and recheck.
2000 Ford Taurus V6-3.0L DOHC VIN S Camshaft Position Sensor: Service and Repair REMOVAL 1. Disconnect the battery ground cable. For additional information, refer to Battery. 2. Remove the Camshaft Position (CMP) sensor. 1 Remove the electrical connector. 2 Remove the bolt and the CMP sensor. INSTALLATION 1. To install, reverse it removal procedure 1. To install, reverse the removal procedure.
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