fastrek82

ok... driving to the store the other day, i noticed the cel started flashing and the car became sluggish with loss of power... now the cel only flashed for like 15 seconds then shut off but the car was still sluggish... so i stopped by a shot and had then check for codes and came up with misfire on plug 5??? then when car was restarted it was back too normal no cel and the power was back.... i have no clue what too do???

05YellowGT

Maybe a coil is starting to go bad ?

Cavero

I guess a good place to start is to pull the spark plugs and take a look. Just be careful when taking the plugs out. How many miles on the car? Original plugs?

fastrek82

Original yes.... 33000, its weird it drives fine now...

OAC_Sparky

Save yourself the headache and the expense of chasing red herrings and throwing parts at it.

Get a code reader or take it to a place that can (some parts stores even do it for free). If the CEL was flashing then is should have set a code.

Blacksmoke

He already read the code.
Did you not see he said it was a misfire on cylinder 5?

Best thing to do is wait to see if it comes back.
If the CEL comes back take it to the shop so they can run a KOE or KOER test on it.
They will hook it up and tell what is going on.
They should also be able to take the "snapshot" these computers often take to see what was going on at the time
of the CEL.

At least it is telling you which cylinder is misfiring lol.
I have been chasing a random misfire code for months and after testing AND replacing plugs 3 times
we have narrowed it down to a problem with my tune. I also have a hunting idle. Both have been happening
since my Hot Rod cams were installed and it seems these cars can throw the random misfire code often with
these cams if the tune is not adjusted right on certain perameters.
Going to the tuner at the first of the year to have the tune redone.

OAC_Sparky

Sorry, I missed it. :/

Blacksmoke

LOL no need to say you're sorry haha.
I was just wondering why you posted that since he talked about his programmer and everything in his post hehe.

mustangGT90210

If I were you I'd replace the plugs now to save yourself troubles later, just my .02

OAC_Sparky

Lol I know, for some reason i missed the one sentence when I read it -- I'm on a few car boards and it's a pet peeve when people post asking for help and not check the codes first and everyone chimes in with well meaning suggestions that just end up costing the OP more money.

Please excuse my OCD lol

Blacksmoke

Yeah replacing the plugs and either putting one piece plugs in or putting anti seize on them will prevent the headache of plugs breaking off into your cylinder head.

Read the TSB for removing spark plugs on these cars