bunkie21

Hello,

I have had some trouble with a '97 Camaro SS. SES lights and fixing one thing to discover another. I could post more about the issue but I'll give the cliff notes version.

Things fixed/replaced:
Fuel Pump
Fuel Filter
Fuel Pressure Regulator
Air Filter
PVC Valve and assorted vacuum hoses (Fixed P0171)
Throttlebody cleaned / new gaskets
Cleaned MAF

On order:
New front o2's
New plugs and wires
ICM
Coil

Current random code after heat soak: P0300

I went out and had a "normal" drive lasting about 3 miles and logged it. I was wondering if someone would mind looking over it to see if anything stands out as indicator.

The log file is below:
https://www.dropbox.com/s/m9btf49s8n...-1644.csv?dl=0

Thank you!

sicksspeed

iTrader: (2)

Biggest issue with those motors missfires is related to the optispark system. Replace the cap and rotor. Check water pump for leak and any oil in distributor. After that let us know.

bunkie21

The water pump was also recently replaced and the Opti checked. The miss fire only occurs after driving the car and letting it set. Sometimes it appears that something gets heat soaked and that's when the misfire occurs.

The log is from a normal drive last night that threw no errors. I was hoping that the experience from this group would be able to look at it to see if anything jumped out as an issue.

Thanks again.

moehorsepower

iTrader: (3)

Is it actually missing, can you feel it or is it just throwing the code.

bunkie21

After a drive and it has time to sit, the miss that causes the P0300 is a severe miss. To the point the SES will blink. This doesn't happen every time lately and I'm wondering if its because its cooler outside.

Otherwise the car runs fine. Or feels like it runs fine.

sreve

iTrader: (3)

Went thru this on wifey's Dorf
Turned out to be a leaking head gasket.
Been adding any coolant?

bunkie21

Funny you mention that, but last time I drove it the low coolant light came on. Between sitting and working on it I figured that I just hadn't topped it off. I lost some when I did the TB coolant bypass for example.


I will top it off tonight and keep track of it. Any other way to check this? That's going to suck if its truly the case.

sreve

iTrader: (3)

I pulled the plugs after a hot soak and found #4 drenched in anti-freeze.
Head would not leak cold and running hot it must have been a small enough
leak to go out the tailpipe unnoticed. Being a '99 with over 200,000mi it got
KW block seal and I found it a new home via Craigslist.