1999 chevrolet coil pack changed still no fire from engine

i bet it is the ignition module, have it tested at oreillys or autozone, it is what the coils bolt to, common failure, or possibly a crank sensor

firing order for 3.1 lumina 1994 ans older with coil pack under exhoust monifold firing order is 146325
for 3.1 lumina 95 and newer with coil pack on top of engine firing order is 523641

no timing has not changed i would try crank sensor ,and change number 4 plug and coil pack

coil packs? or dist engine? check coil packs for cracks and leakage on distributor egines check for side to side play in the dist shaft if any play then change it!

check the fire to the coil pack if it's present then check the pulse to the crank sensor

The most likely problem is that coil pack is bad these two are paired on the same coil so replace the 3/5 coil pack if you let it keep going it will damage the other coils or the diode plate which costs another $75.00 Buy From GM not aftermarket. Also get dielectric grease to put on the boots of the plug wires both ends

if you have already replaced the plugs and wires, 1st check that all connectors are properly attached to the coil packs. if that is all ok, you should change BOTH coil packs. when they begin to go bad, they will only send spark to one plug.

WHAT SIZE ENGINE

have a look at the coil pack... it is numbered... now if it's like a 95 windstar the engineers had a sense of humour. it is 1 2 3 down one side then 4 6 5 down the other.... i didn't notice this when i changed my coil pack and couldn't figure out why it was missing.

Robert

IS THIS A 99 CROWN VIC? IF SO IS IT MISFIRING? IF THIS IS THE CASE YOU MORE THAN LICKLY NEED PLUG WIRES.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/terry_db4da071b7da3ac1