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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I got a friend to check my installation of the new coil & all wires. Everything is fine but there is no spark still. SOS: what can be wrong pls?


Is there B+ going to the coil's , is there control from the ignition module or PCM , is the crankshaft position sensor good ? Always test before replacing parts , you want to know exactly what is wrong . The correct part to replace !

Maybe you should think about taking this to a Qualified ASE certified Technician !

Sep 06, 2015 | Cars & Trucks

1 Answer

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

2 Answers

I've replaced everything to do with ignition spark on ky 1998 gmc pickup it has a 350 vortech engine why am I jot getting spark at the spark plugs ?


There is a spark control modal in the distributor most books do not tell you about it . if you have replaced everything else try that

Apr 19, 2015 | GMC Cars & Trucks

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

1 Answer

My mother has a 1993 Oldsmoblile Cutlass Cierra. It's a 3.3. She had a new engine put in it last year. Now her car died yesterday. She had to have it towed home so my brother could look at it. He got...


Check for spark. My guess would be the ignition module going out, but could also be the crank sensor. The module sits under the coils. Check all coils for spark. If any coil doesn't spark, you can try replacing just that coil, but the problem may still be the module underneath. If you have a meter, run a resistance check on each coil from the terminals to ground. If the same coil that doesn't fire aslo has a different resistance, replace that coil.
If you have a meter, check the AC voltage on each of the crank sensor wires shown as compared to ground or battery positive. If the AC voltages are different on the three wires, suspect the sensor is bad, but also check the tone ring on the pulley (Fig 2 below) for any damage.
Please see my tip at http://www.fixya.com/cars/r5821173-doesnt_car_start_gasoline_engines for how to check for spark. These are genericinstructions.
The 3.3L engine is the only one with the C 3 I system. REMOVAL and INSTALLATION C3I Module See Figure 1
  1. Disconnect the negative battery cable.
  2. Unplug the 14-way connector at the ignition module.

jturcotte_1656.gif
Fig. Fig. 1: Distributorless C 3 I coils and module system - 3.3L engine
  1. Tag and disconnect the spark plug wires at the coil assembly.
  2. Remove the nuts and washers securing the C 3 I module assembly to the bracket.
  3. Remove the 6 bolts attaching the coil assemblies to the ignition module.

To install:
  1. Install the coil assemblies to the ignition module and install the 6 attaching bolts.
  2. Install the nuts and washers attaching the assembly to the bracket.
  3. Connect the spark plug wires.
  4. Engage the 14-way connector to the module.
  5. Connect the negative battery cable, then reset the clock, radio and any other accessories.

Ignition Coil(s)
  1. Disconnect the negative battery cable.
  2. Tag and disconnect the spark plug wires.
  3. Remove ignition coil attaching bolts, then the ignition coil from the module.

To install:
  1. Install the coil(s) and attaching bolts.
  2. Connect the spark plug wires.
  3. Connect the negative battery cable, then reset the clock, radio and any other accessories.

Dual Crankshaft Sensor
See Figures 2, 3 and 4
  1. Disconnect battery negative cable.
  2. Remove serpentine belt from crankshaft pulley.
  3. Raise and safely support the vehicle.
  4. Remove right front tire and wheel assembly, then the inner access cover.
  5. Remove crankshaft harmonic balancer retaining bolt and crankshaft harmonic balancer.
jturcotte_1657.gif

Fig. Fig. 2: Harmonic balancer with interrupter rings on C 3 I system
  1. Unplug the electrical connector from the sensor and remove the crankshaft sensor from the vehicle.

To install:
  1. Loosely install the crankshaft sensor on the pedestal.
jturcotte_1658.gif

Fig. Fig. 3: Dual crankshaft sensor - C 3 I system
  1. Position the sensor with the pedestal attached on special tool J-37089.
  2. Position the tool on the crankshaft.
  3. Install the bolts to hold the pedestal to the block face. Tighten to 14-28 ft. lbs. (20-40 Nm).
  4. Tighten the pedestal pinch bolt to 30-35 inch lbs. (3-4 Nm).
  5. Remove special tool J-37089.
  6. Place special tool J-37089 on the harmonic balancer and turn. If any vane of the harmonic balancer touches the tool, replace the balancer assembly.

A clearance of 0.025 inch is required on either side of the interrupter ring. Be certain to obtain the correct clearance. Failure to do so will damage the sensor. A misadjusted sensor of bent interrupter ring could cause rubbing of the sensor, resulting in potential driveability problems, such as rough idle, poor performance, or a no start condition.
  1. Install the balancer on the crankshaft and install the crankshaft balancer bolt. Tighten to 200-239 ft. lbs. (270-325 Nm).
  2. Install the inner fender shield.
  3. Install the tire and wheel assembly. Tighten to 100 ft. lbs. (140 Nm).
  4. Lower the vehicle.
  5. Install the serpentine belt.
  6. Connect the negative battery cable, then reset the clock, radio and any other accessories.
jturcotte_1659.gif

Fig. Fig. 4: Distributorless C 3 I positioning tool J-37089 for installing dual crankshaft sensor.system - 3.3L engine

May 07, 2011 | 1990 Oldsmobile Cutlass Ciera

2 Answers

1999 dodge caravan with 2.4 cylinder engine. no spark. check timing, replaced coil pack, replaced computer still no spark any ideas


Crankshaft senor. This sensor supplies info to the ECM, that inturns sends the info to the ignition module that controls the spark. Check the codes.

Feb 07, 2011 | 1999 Dodge Caravan

1 Answer

Crankshaft position sensor location


1990 Chevrolet Cavalier 2.2L TBI 4cyl
The Crankshaft Position Sensor is located under hood, center, rear engine area, below ingnition coil pack and DIS module, mounted in engine block.

87c675c.jpg

Fig. 1: View of the CKP sensor-to-crankshaft reluctor relationship

Crankshaft Position (CKP) Sensor
A magnetic crankshaft sensor (Hall Effect switch) is used which is remotely mounted on the opposite side of the engine from the DIS/IC module. The sensor protrudes in to the engine block, within about 0.050 in. (1.27mm) of the crankshaft reluctor.

I really hope help you wuth this (rated this help). have a nice day, good luck.

Sep 25, 2009 | 1990 Chevrolet Cavalier

1 Answer

Need to know what fires coil 1995 mercury sable both wires to coil have power when key is turned on car cranks no spark from coil new coil what gives the coil extra power to fire


what engine? 3.0L 2 Valve? 4 Valve?
3.4L SHO engine?

The PCM (engine computer) fires the coils, but it is never the cause of a problem. I suspect it is the crankshaft position sensor on the front of the engine by the crank pulley. easy to change.

Crankshaft Position Sensor The crankshaft position sensor (CKP sensor) (6C315) is a variable reluctance sensor triggered by a 36-minus-1 tooth trigger wheel located on the crankshaft pulley and damper. The signal generated from the crankshaft position sensor is called the crankshaft position (CKP) signal, which provides base timing and crankshaft speed (rpm) information to the ignition control module (ICM) (12K072). Base timing is set at 10±2 degrees before top dead center (BTDC) AND IS NOT ADJUSTABLE. The powertrain control module (PCM) (12A650) will use this information with the spark advance information to determine ignition coil (12029) turn on or turn off time.

Sep 15, 2009 | 1995 Mercury Sable

3 Answers

Im not getting any spark in my 96 Corsica


Ignition module may be bad. It should be located under the coils, the coils usually plug into the ignition module. Also might be a bad crank or cam sensor

Sep 11, 2009 | 1996 Chevrolet Corsica

1 Answer

Car wont start


I noticed you replace the crankshaft sensor, but not the CAMshaft sensor.
The Ignition module takes the input of both sensors to tell the coil when to energize.
This sensor should come up as an error code when you attach a obd reader.
Even if your light is not on - there may be a code. If it is not your vehicle originally, some people pull the bulb!

Jan 21, 2009 | 1993 Pontiac Bonneville

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