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1998 350 vortec with no spark and a new module under the distributor cap any ideas?

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I've had the same thing happen. My problem was a cracked rotor. Couldn't see the crack just black scaring where the juice was traveling. Try a new cap and rotor.

Posted on Dec 29, 2010

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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

1 Answer

Removing ignition module on 1996 chevy 5.0 vortec


Remove the distributor cap then the rotor and then remove the wire connectors hook to the module then remove the 2 screws that mount it to the distributor.Make sure you put the heat sink paste on the bottom of the new module before re-installing.

Jan 29, 2012 | 1996 Chevrolet K1500

1 Answer

97 gmc 2500 5.7l vortec, won't start, fuel pump works, tried using starting aid and nothing, hooked up a scan tool, and no errors came up, could it be the crank position sensor? or the distribution centre...


See if you have spark on at least two plug wires. If you do, but it is weak, you may just need a good tune up (plugs, wires, distributor cap, and distributor rotor). If you don't have spark or it is only on one wire, take the distributor cap off and see if the distributor is turning while someone turns the key. If it doesn't spin, you need a distributor because the bottom gear is broken or stripped. If it does spin, then it could be the coil, ignition module, crank sensor, fuse or wiring to any of these parts. It will take a lot of wire testing and diagnostics to figure out which part it is if it isn't just a simple tune up or distributor.
Hope this helps. Good luck!

Apr 12, 2011 | 1997 GMC Sierra

1 Answer

1993 4.3L. vortec turns over but won't start... New cap and rotor gas tank, fuel pump and CPI unit... Any ideas? Thanks


check for spark at the plugs check firing order in correct direction on cap in relation to direction of dist rotation remove cap wind engine to see that distributor drive gear hasnt stripped a tooth if these are ok if its electronic dist the module could be faulty

Apr 06, 2011 | 1993 Chevrolet S-10 Blazer

2 Answers

1979 ford f350 has no spark. replaced coil, plugs, ignition module and still no spark. please help!


1979 ford 400 Drove inot shop did a cam shaft change and put all back together and no spark! put new coil , distributor, eletronic brian , wires ,rotor, cap, and check wire harness for brroken wires . still no spark? ANY IDEAS??

Jan 12, 2011 | 1979 Ford F 350

1 Answer

Were do i find the module and the ingition coil on a 1992 chevy truck vortec motor


module is under the distributor cap, bolted to the plate that the cap bolts to. It will have two wiring harness' attached to it. The coil is off to the side on the passenger side If I remember right and it too has two wiring harness' attached and one "spark plug" wire from it to the distributor cap.

Jan 01, 2011 | 1992 Chevrolet K1500

1 Answer

My 1986 toyota 2wd pick-up truck has no spark at the coil, the guys at auto - zone tested the coil for resistance and it check ok. the rotor turns when I crank the engine, what else should I check.-


Hello i can assist you. Hello your ignition module will cause a no spark you find your module under your distributor cap.You will see two wires go into your distributor shaft these will connect to your pick up distributor module.To remove and replace this part you will need to unscrew the distributor cap lift off and remove retaining screws on the module once you have removed this replace it with your new module reinstall your distributor cap and start.

Dec 30, 2010 | 1986 Nissan Pickup 4WD 1986

1 Answer

1993 VW Cabriolet stopped running at stop sign. Would not restart. Replaced coil, cap and rotor. Car still will not start. No spark coming out of new coil to distributor. Timing light shows no spark...


I would remove and verify the rotor is turning when the motor is cranked over, you may have a broken timing belt. Also check the ignition control module which is mounted under the hood, driver side, upper firewall, mounted below plastic drip tray.

Nov 08, 2010 | 1993 Volkswagen Cabriolet

4 Answers

I want to replace spark plugs (8) and wires on my '84 GMC pickup


get a 20 dollar haynes or chiltons manuel and find the module and coil. always change the ignition module and coil every 4 no more than -5 years to be safe.

Feb 10, 2010 | GMC Sierra 2500 Cars & Trucks

1 Answer

My distributor is fine but i lost spark on my 1994 chevy k1500 with a 4.3l v6 vortec engine cannot figure it out checked everything i could think of what could be the problem?


change the ignition module located under the rotor in the distributor cap it has 2 small 8mm bolts and plugs into the distrutor wiring in the cap ( you,ll see) it is flat usually with 2 wires clipped into each end ..this will be the problem..I have changed many.

Apr 30, 2009 | 1994 Chevrolet K1500

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