Question about 1991 Oldsmobile Cutlass Ciera

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In which area of the engine would I be able to find crank sensor

A shop already told me I need to change the crank sensor and ignition module in my 1990 cutlass ciera S and I don't know where in the engine compartment I should be looking

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CRANKSHAFT POSITION SENSOR

Fig. 8 Ignition Coil Module Assy 2.5L/4-151 in which area of the engine would I be able to fin - 42188531 The Crankshaft Position Sensor is mounted remotely on the bottom side of the ignition module.

RH Side Of Engine. 42277335

Front RH Side Of Engine

Applicable to: Cutlass Ciera & Cutlass Cruiser w/V6-231/3.3L

Posted on Dec 11, 2009

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1988 pont 6000 quit and would't restart. Generates 42 code. I have shop manual. Flow chart led to ign. module or ecm. I replaced both. The car idled for 20 min. and quit.


I don't know liter size of engine? I don't know exactly what testing you have done? I need more info?
You have dis ignition? Engine cranking, do you have spark at the plugs, proper fuel pressure and fuel injector pulse?
The purple wire with white tracer from ignition module to computer has a dc pulse with engine cranking? With bypass ignition, engine cranking, it's the ignition module that controls spark, during cranking rpms. Did you check voltage and ground for ignition module. With dis ignition, there is a crank sensor? I'm not saying replace anything. I would have replaced the --spark plugs and plug wires, Possibly the ignition coils.
I just don't know exactly what testing you have done?
If you have already done everything I suggested, then, pardon my post. Just trying to help.

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You may need a shop manual to get the test procedures.
You would need to know if you are getting power to the pink black wire going to the module, and a signal from the crank sensor.
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There is not a cam sensor on the 1.9 sohc or dohc engine. The ignition module looks at the collapsing magnetic field of the ignition coil to determine cam reference.

Did you mean crank sensor?

Are you coming up with a code for the cam sensor?

If so the fix is usually to remove the coils and ignition module from the transmission. Clean the area they mount to with a scotchbrite pad until all the corrosion is removed. Reinstall the ignition module and coils using new bolts available from saturn/GM. Clear the code.

In some cases the ignition module or the coil or the ignition wires can also cause this code if they are bad.

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The anti-theft system has nothing to do with spark . When it won't start check for B+ voltage at the ignition module . pin P a pink wire . Check pin K for a good ground . Check the 18X & 3X crank sensor signals to the PCM . It's good you have a snap on scan tool an can check sensor data , but to check cam an crank signal's you really need a scope ! Does your snap on tool have a lab scope ( oscilloscope ) Do you know what this is ?
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Do you have access to wiring diagrams ? Check electrical distribution in an out of the ignition switch .Free wiring diagrams here
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TSB'S that GM may have on this car. For what ?

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