Question about 1996 Volvo 850

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Have no spark or injector switching

Have replaced the crankshaft sensor plus coil module still not working any ideas pls

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You will need to check for power at the coil and computer, it sounds like you have a bad fuel injection system relay. Sometimes referred to as the DME relay in Bosch systems, which is what I think you have.

Posted on Mar 08, 2009

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97 oldsmobile achieva wont fire changed coil pack spark plugs cam sensor still wont start


Make sure battery has a full charge and battery connections all good.
If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse.
If you having a problem with more than one system, I want to check for rpm signal, that usually comes from the crank sensor. Not sure why you replaced cam sensor? I always want to check sensor wiring circuits before replacing anything. Don't replace anything unless your testing points in that direction.

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2006 saturn ion will run fine be drive for while then all sudden will die and won't restart from 10 min to few hours last time replace fuel pump that was not problem still does it any ideas


You need to test ,see what's missing while it won't start . Spark ! fuel pressure test, injector . Pull spark plug wires off same coil , crank engine , is there a spark jumping from one coil tower to the other ? If not the crankshaft position sensor or ignition module is bad . Saturn No Start Case Study featuring Beau Danner I would say just because I know GM ,the ignition module or crank sensor is bad .

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How do replace ignition control module in 1998 K-1500 5.0 liter vortec


This system does not use the ignition module used on the DI systems in the past. The VCM controller now controls the ignition control (IC) and bypass functions.
The crankshaft sensor, located in the front engine cover, is perpendicular to a target wheel attached to the crankshaft. The target wheel is equipped with slots situated 60 degrees apart. As the crankshaft rotates, the target wheel rotates past the crankshaft position sensor. The rising and falling edges created by the slots cause a signal to be sent back to the VCM. This signal occurs three times per crankshaft revolution and is referred to as the 3x signal for V6 applications. The signal occurs four times per crankshaft revolution and is referred to as the 4x signal for V8 applications.
The VCM then utilizes this 3x (V6) or 4x (V8) signal in order to provide the correct spark to the engine by way of the single coil driver module. The single coil driver module is basically an electronic switch that when commanded by the VCM, causes the primary coil voltage to breakdown, energizing the secondary coil and providing a spark via the coil wire to the distributor cap. The distributor consists of the following components:
The system consists of the following components:
?€¢
Vehicle control module (VCM)


?€¢
Distributor


?€¢
Ignition coil driver module


?€¢
Ignition coil


?€¢
Crankshaft position (CKP) sensor


Now which part do you want to replace ?

?€¢
Cap and rotor


?€¢
Camshaft position sensor


?€¢
Gear drive and shaft

The camshaft drives the distributor shaft which rotates providing a spark to the correct cylinder by way of the cap and rotor. The camshaft position (CMP) sensor functions much like the crankshaft sensor previously described but provides only a 1x signal to the VCM. That is, for every 2 rotations of the crankshaft, there is 1 rotation of the camshaft. Note that the camshaft position sensor will not affect driveability. The sole purpose of the camshaft position sensor is to provide the VCM with the necessary information for the misfire diagnostic trouble codes (DTCs).

Sep 06, 2015 | 1998 Chevrolet K1500

1 Answer

Crankshaft sensor and ignition module keep taking a dump.


I would check for a short somewhere in the wire harness or check the bell for true on crank balancer make sure its not rubbing pickup

Aug 14, 2012 | 1990 Oldsmobile Cutlass Ciera

1 Answer

97 pontiac transport no power to ignition module


Not sure if I am following you right.
The engine has 3 coils that fire the plugs. The coils are mounted on a module that provides voltage and ground to the coils.
The module gets power from a 20amp fuse marked "Inj" for injector.
The computer controls the module based on info from the various sensors.
A mechanic would do a pin test on the module to diagnose a no spark condition.

Jul 15, 2012 | 1997 Pontiac Trans Sport

4 Answers

There is no spark thus car won't start. the battery is fine, it turns over good, it is not flooded, the spark plugs are new, the ignition coil was just replaced, what else controls the spark


The Crankshaft Position Sensor and the Ignition Control Module also control the spark. It depends on whether your vehicle is equipped with the 2.2L engine or the 2.4L engine as to where these components are located and what they look like.

Jan 29, 2011 | 1996 Chevrolet Cavalier

1 Answer

I have a po 300 engine code random cylinder misfire i change cap rotor and wires problem still exists


PO300 - Random/Multiple Cylinder Misfire Detected

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crankshaft position (CKP) sensor (POS) signal to vary, Powertrain Control Module (PCM) or Electronic Control Module (ECM) can determine that a misfire is occurring.

Causes:
- Improper spark plug
- Insufficient compression
- Incorrect fuel pressure
- The injector circuit is open or shorted
- Fuel injectors may be faulty
- Intake air leak
- The ignition signal circuit is open or shorted

Solutions:
- Perform Injector Service
- Replace Spark Plugs
- Replace Injectors
- Replace Ignition Coils

Jan 27, 2011 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

1988 2.8 Multi Port INJ. w series Engine turns..


Crankshaft sensor is what ECU uses to fire injectors. Check it out with a voltmeter. Look for continuity, resistance and voltage. Look over connectors they are likely to be corrored or lose.
The coil is where the spark is made in this vehicle check it for leakge, resistance and voltage and corrosion .

Apr 13, 2010 | 1988 Chevrolet Celebrity

2 Answers

I have a 93 Eagle Talon with good fuel pressure and no spark


could be crank & cam sensor if they do not meet in sinc they will not get spark

Nov 13, 2009 | 1993 Eagle Talon

1 Answer

1990 gmc 6500 topkick with no spark or injector pulse. all 4 wires on the ignition coil have battery voltage with key on. is coil shorted or is the ignition module bad?


You are jumping to conclusions. Slow down.
No spark AND no injector pulse indicates none of the desired outputs were triggered. The ignition module makes spark when it receives a crankshaft position sensor signal, and then transfers control of that spark to the computer after it starts. The module takes its crank sensor signal and generates an RPM count that it forwards to the PCM(main computer) which is used for triggering the injectors and controlling timing. SO, if you had a bad crank sensor OR a bad ignition module, you could lose both spark AND fuel. a coil would not disable injector pulse. modules RARELY fail in a manner that disables RPM reference to the computer causing it to not fire the injectors...At this point, I would TEST the crank sensor as the next step. If its easier, 1 of the wires on the module goes directly there so you can test the crank sensor at the module.

Sep 18, 2009 | 1990 GMC K3500

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