it may be many. there may not be a problem with the PCM. it could be a ignition module problem. at this point i recommend taking it to your local dealer instead of throwing parts at it. besides computers have to be programmed by a dealer. they are not plug and play anymore.Fuel injectors, coil packs, 98 cavalier...oh my!?Aparently the wire that goes to the fuel injector had gone buggy. It was spliced with another injector wire and now runs beautiful again. thanks everyone for all your help.
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Fuel injectors, coil packs, 98 cavalier...oh my!?It could be a simple vacuum leak that is causing a lean condition in cylinder #1.It's common, and easy to fix.
Look around for a disconnected or cracked vacuum line/hose on the intake manifold, and listen for a sucking noise at idle.i own a shop and its possible that you have a bad control module on it or a coil pack acting up on it,they will fire sometimes and sometimes not,if none of this helps it could actually be the main ecm on it causing this to happen i have seen it a few times but double check everything before you spend any more money on it,buying stuff you don't need can get really expensive after a while ,good luck with it i hope this helps.look for engine codes first.
that engine is a distributor less.
change the power coil block.do you have a vacum port on the no.1 cylinderHow loud is the ticking? Could be in the head, like a valve not opening (a rocker broke or spring broke, bad gas can make valves stick and then something has to give)The ticking could be the spark from number 1 wire going where it shouldn't go. It could be shorting to the head when it's plugged in, but going through the plug when you have it out. If the compression check was good, it's probably not a valve problem.