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I have a new cap and rotor new crankshaft position sensor new coil and new ignition module but still no spark

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What kind of vehicle? Possible coil wire from cap to coil. Possible bad pick up coil assembly in distributor. Possible power supply issue

Posted on May 02, 2015

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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

2000 Chevy express Van 4.3 motordistributor cap and rotor new friendship position sensor new coil and its mission module our new still no spark


If the ignition coil, crank sensor,ignition ,module ,cap and rotor are new then possibly a bad pick up coil inside the distributor bad ignition coil wire from dist. to coil or missing power supply

May 02, 2015 | Chevrolet Express Cars & Trucks

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

2 Answers

I have fuel but no spark. what can it be?


it could be a crank sensor, ignition module, coil, if this has a distributor could be pickup coil or a bad distributor, bad cap/rotor. could also be a PCM problem on the ignition circuit.

Aug 24, 2014 | 2001 Jeep Cherokee

1 Answer

Having trouble starting my 1995 Jeep Grand Cherokee. Changed out distributor cap, rotor, module and spark ignitor coil and no luck. Checked for spark by taking loose a spark plug wire and using a sc


is the check engine light on. it sounds like a bad sensor crankshaft positioning sensor or camshaft positioning sensor will cause it not to start.

Aug 16, 2014 | Jeep Grand Cherokee Cars & Trucks

1 Answer

1986 Chevy Truck, 350, no spark, new ignition control module, new coil and cap and rotor.


Try a new pickup coil inside the distributor. The computer can't compute spark timing without that information about the crankshaft position.

Sep 25, 2013 | Cars & Trucks

1 Answer

NO FIRE AGAIN


Make sure fuel pump is getting power. Im not sure but I think ignition is wired through fuel pump so if it dont pump fuel it wont spark either

Feb 22, 2013 | 1999 GMC Jimmy

1 Answer

Van won't start - no spark. Changed Ignition coil, ignition module, distributor cap and rotor. Still no spark


CHECK IGNITION FUSE, DEPEND ON MODEL VECHICLE COULD HAVE BAD CRANKSHAFT POSITION SENSOR.

Aug 06, 2011 | Chevrolet G20 Cars & Trucks

1 Answer

My engine turns but no spark I changed ignition coil and still no spark,what could it be?


Depending on which engine your car is equipped with; the following components could be at fault.

Crankshaft Position Sensor
Camshaft Position Sensor
ECM (Engine Control Module)
Distributor Cap or Rotor
Fouled Spark Plugs
Bad Plug Wires

If they haven't been replaced in the last 30K miles, I suggest you check and /or replace the the plugs and wires first.

If your engine is equipped with a distributor, check and/or replace the distributor cap and rotor if it hasn't been replaced in the last 30k miles.

If your engine is equipped with crank or cam sensors have them tested.

Mar 21, 2011 | 1990 Volkswagen Cabriolet

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