Hi all,
I have a 1999 chevy cav with 95,000 miles on it with a 2.2L motor. I recently (earlier today) got a P0300 code (random misfire many clyinders), anyhow I think the problem is with my spark plugs, I replaced at 70,000 miles my spark plugs and plug wires, I used some lifetime warranted wires from Advanced Auto, and the spark plugs are Bosch Plautim plugs.
My question is what are good plugs to use that won't misfire after 20,000 miles from now???????
This is my 5 cents worth, (normally is would be 2 cents worth but I have adjusted it for inflation)
Car I drive:
99 Chevy Cavalier 2.2L 5 spd man (My daily car)
98 Ford Escort ZX2 4 spd auto
I use the Bosch Platnuim 2 plugs and havent had a problem. ACdelco makes a good plug too.
bosch plugs are pretty much the @!#$tiest you can get. im sorry tinkles, i tried the boschs once, i installed them, got a real bad misfire for my troubles. switched to ngk iridiums, and have never looked back.
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I've had good luck with AC Delco plugs in both my car and my brother's. One of his originals appeared to have one of the platinum "dots" disappear from the side wire on one plug though - hopefully it made a quick journey out of there without doing any damage. I would think that this would be a potential issue with any double platinum plug.
I had Bosch Platinums in my mom's Firenza (that's a Oldsmobile version of the Cav for those too young to remember). I had them in there for 10 years until we got rid of the car. It never missed a beat on those - and it had a LOT of short trips - not to mention the abuse of two teenagers learning to drive on it during that time. Those were made about 18 years ago though, so they may have changed since then...
You can try changing the plugs, but I would be more suspicious of a fuel or ignition module problem with that code. Could also be the crank sensor. Plugs wear at a very gradual rate - I wouldn't expect them to suddenly cause a problem. It could even be some water in the gas, or just some bad gas going through. If there's any suspicion of the quality of the gas being questionable, I would maybe add some gas line antifreeze to it, and wait until the next tank to see what happens. That is, unless it's running very badly. You don't want to melt down your converter.
im runnin NGK V powers and the increased hp & tourqe is very visable thier like 7 bucks a plug @ autozone
Thank you all for the tips. I forgot to tell you in my org post that I took out my spark plugs and re gaped then (they were off like .020) (so idiot forgot to gap them when he installed them originally) [ME] anyhow I got the code once more after I regapped them, then I cleared the code and I went to work (about 30 min trip) and the car ran fine no misfires for codes and I have driven it 2 more times since then (a 30 min trip and 15 min trip) with no problems, so I guess the moral of the story is check your spark plug gap (in my case the gap is .050)
thank you all for the tips, I still may replace the plugs with either ac Delcos or NGK's we will see.
This is my 5 cents worth, (normally is would be 2 cents worth but I have adjusted it for inflation)
Car I drive:
99 Chevy Cavalier 2.2L 5 spd man (My daily car)
98 Ford Escort ZX2 4 spd auto
I have Bosche platinum +2's in my Eco.
pulled P0300 and replaced my ICM which cured the light for a little bit, still getting a CEL which I haven't checked for yet.
Guess what I'll be doing next? Going back to ACDelco's.
Dan Trump
2004 Cavalier LS Sport - Victory Red
Beaver, the CEL you are throwing now is probably due to either your O2 sensor or your cat, due to the excess amounts of gas put through the exhaust, depending on how much you drove the car before replacing your ICM.
I drove the car about .5 miles before I replaced the ICM.
I cleared the CEL again and I'm gonna see if it comes back.
Dan Trump
2004 Cavalier LS Sport - Victory Red
