hey guys, need some help. My Z rarely gives me any problems since the day i bought it. Here is a little background.

Everything was fine. I just moved to a new house and i let my Z sit here for about three weeks straight without driving it. In this time, hurricane irene hit us last week with a lot of rain, wind, etc. but still, i never started up the car during this time .

the car was left with little gas. not where the gas light was on but it was low. Also, in this time , before parking it for three weeks, i had a really bad exhaust leak since i broke my exhaust piping. it was bad enough where it sounded horrible .


Well today i started her up tonight and the idle was bad. like it died a couple of times then i just revved her up and then started to drive. well the SES light came on and was blinking. I reparked and checked the codes..

p0300 - random misfires
p0302 - misfire cylinder 2


the idle is pretty damn bad right now. Should i reset my codes to see if it comes back on?

i'm guessing it could be

-bad gas/low gas wiht condensation
- a bad coil pack
- exhaust leak causing something


like i said, i park and leave my car there for long periods of times all these years of owning my car but this time the only difference is that i have a bad exhaust leak before parking it and also a hurricane hitting us.

any help?

 

put some fresh gas in highest rating u can get throw some octane booster in her ecu reset enjoy

 

check plug gap, clean em up. throw in some HEET or i think its actually iso heet it removes water, id put in some fresh 93 and and i always throw in nos booster or turbo108.

 

i'll try some of those tips. thanks guys.

anyone else have had this problem?

 

bump

 

Where is the exhaust leak. See if any of the coils got wet. I don't think ur gas went bad in 3 weeks. And the octane booster advice is just stupid. Can't hurt filling her up tho.

 

both flex pipes, the mid pipe has a big hole and the rear main muffler. pretty bad leaks. you can hear it pulsate from under the car before it started messing up.

weird thing is, i reset the engine light, the problem went away but not sure if its going to come back. didin't drive it but idle became perfect after i reset the light.

 

Yo..i had P0300 when i bought toby's z too. Mine was a vacuum leak in the intake manifold. You might want to make sure those bolts are tight. Also...my z does the same....I park mine for a week or two with out driving it. As soon as i crank it up...ses light comes on with p0300

I gota drive the car till the engine gets warm then reset the ecu. After ecu reset..... it usually does the trick...until i park the car again for a week or two.

 

with his engine, it's leaking because of that crappy gasket material that he used for it, lol. the bolts are stripped out.

i put in new gas, the car runs fine. i think i had some hillbilly gas in it from filling it up in the country area around here. i'm still going to get some new coil pack anyways. I never get problems with this car so i guess i get annoyed when something comes up.