Rough idle can be caused by dirty fuel injectors, incorrect idle speed, exhaust restrictions, vacuum leaks, incorrectly installed or damaged spark plugs, a defective or clogged fuel pump or fuel filter, failing electrical components such as
the ignition control module,...
Rough idle and excessive shaking of the engine could be due to a bad tank of gasoline, dirty fuel injectors, incorrect idle speed, exhaust restrictions, vacuum leaks, incorrectly installed or damaged spark plugs, a defective or clogged fuel pump or fuel filter, failing electrical components such as
the ignition control module, plug wires, coils, and spark plugs, a defective airflow sensor, dirty oxygen sensors and other causes.
Hi - the diagnostic trouble codes you mention are: 33 - Manifold Absolute Pressure circuit / sensor malfunction: wiring open circuit / shorted circuit to positive, hose blocked / leaking, MAP sensor, 34 - manifold Absolute Pressure circuit / sensor malfunction: wiring shorted to ground, 42 -
ignition control module circuit...
I'm guessing backprobing doesn't work since
the ignition control module is built into the coil...
If theres
an ignition control module, or something similar that controls the spark by taking readouts on various ignition and engine sensors, that's where I'd start.
If you have a manual look at the ignition system or like
ignition control module or ignition coils and check those for moisture.
Not exact matches
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The alarm will also be activated if the
control module / receiver detects voltage from the
ignition before either of the following conditions occur:
Body electrical:
Ignition module, ignition switch, electronic spark control detonation sensor and con
Ignition module,
ignition switch, electronic spark control detonation sensor and con
ignition switch, electronic spark
control detonation sensor and controller.
The anti-theft function is armed if the transmitter sends the LOCK message to the
control module / receiver when the
ignition is OFF.
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Control Modules, Emission
Control, Engine, Engine Systems, Exhaust System, Frame, Fuel System, Heated Systems, Heating, Horn,
Ignition Control Instrument Cluster, Lamps, Message Systems, Navigation / Telecommunication, Power Systems, Quick Reference, Restraints, Security, Speed
Control, Steering, Tires / Wheels, Transmission and Transfer Case, TurboCharger, Vehicle, Vehicle Theft, Wipers / Washers, Wiring
Ignition timing is adjusted by the power train
control module (PCM).
Front and rear wiper motor, transmission and linkage; power window motor; window regulators; power seat motor; steering column multi-function switch and individual switches for turn signal, headlamp, dimmer, wiper, washer and cruise
control; clock spring / spiral cable; mirror motor switch; brake light switch; neutral safety switch; glove box light switch; courtesy light switch; cooling fan relay; air
control solenoid; air regulator valve; idle air
control motor; electronic
ignition module;
ignition coil; engine distributor including shaft, gear, bushings and
modules; electronic throttle
control; throttle position sensor; vehicle speed sensor; manifold absolute pressure sensor; knock sensor and barometric pressure sensor.
A powertrain
control module (PCM) examines various engine functions as well as a block - mounted acoustic knock sensor to determine optimum
ignition timing.
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control module, 58X crankshaft reluctor ring, dual variable valve timing, digital crank and cam sensors, individual coil - on - plug
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Distributor;
ignition lock cylinder; engine wiring harness; washer pump motor and switch; automatic climate
control programmer; electronic instrument cluster; fuel gauge; cooling sender; cruise
control module; power seat motor; neutral safety switch; reverse indicator switch; stop lamp switch; starter drive; starter solenoid; electric horn.
FAST's latest valve timing
control module and associated harness provide a plug - and - play interface among the Ford Coyote, FAST XFI Sportsman ECU, and an XIM
ignition module.
Ignition module; ignition coil; computer timing control unit; powertrain control module; EVP sensor; knock and camshaft sensor; crank angle sensor; engine cooling fan motor; cruise control switch; power antenna motor; convertible top motor; power sunroof motor; power mirror switch; power mirror motor; power seat switch; overdrive switch; audio dashboard console (radio / C
Ignition module;
ignition coil; computer timing control unit; powertrain control module; EVP sensor; knock and camshaft sensor; crank angle sensor; engine cooling fan motor; cruise control switch; power antenna motor; convertible top motor; power sunroof motor; power mirror switch; power mirror motor; power seat switch; overdrive switch; audio dashboard console (radio / C
ignition coil; computer timing
control unit; powertrain
control module; EVP sensor; knock and camshaft sensor; crank angle sensor; engine cooling fan motor; cruise
control switch; power antenna motor; convertible top motor; power sunroof motor; power mirror switch; power mirror motor; power seat switch; overdrive switch; audio dashboard console (radio / CD only).
Engine and dashboard main wiring harness; washer pump motor; electronic instrument cluster; fuel gauge; cooling sender; cruise
control module; power seat motor; convertible top motor; power sunroof motor; power seat switch; neutral safety switch; reverse indicator switch; stop lamp switch; overdrive switch; radiator cooling fan motor; reverse indicator switch; electric horn; cruise
control transducer; engagement switch and servo; distributor; horns; power antenna motors; washer pump motors; window regulators;
ignition coils; knock sensor; crankshaft position sensor; camshaft position sensor.