Just discovered this site the other night and I'm pretty happy with all the information available on the Bonneville. I'm having a problem on a 1995 SE which entails the car'* idle fluctuating on occasion and also stalling sometimes. The problem usually happens when the car has been run and warmed and when parking the idle will drop to 500rpm rapidly rise to 1300rpm then back down. Sometimes it'll do this indefinately but many times the car stalls. I've also noticed the car will misfire under load at low rpms in OD, but that is less frequent. My plan of attack is to give the old Bonnie a good tuneup. Should I be following standard tuneup stuff or is there something unique I should look for with this particular car? Any tips would be appreciated.

I plan on changing the wires, plugs, fuel filter, checking the timing, and maybe the PCV valve. Is this all I should be doing as a preliminary resolution of this problem?

Also I get a SES or CEL light when the car stalls at idle. The car sounds three short beeps. I don't know if it'* relavent or not but that is what happens. Again any help or "how-tos"/write ups would be great. Thank you all for your help.

[quote="Wingnut"]

I plan on changing the wires, plugs, fuel filter, checking the timing, and maybe the PCV valve. Is this all I should be doing as a preliminary resolution of this problem?

[quote]

Yes, a scan would be best, but more specifically on the tuneup items.

Plugs (AC Delco or NGK), wires (good aftermarket wires like MSD or Taylor), change the PCV, fuel filter, and don't forget the air filter. If you don't know when the O2 was changed last, or if it has over 50k on it, consider doing that.

The timing isn't adjustable. It'* entirely controlled by the PCM.

Wow you guys are awesome. Thanks for the tips. Didn't know the timing was fully computer controlled. I've browsed the site a little more now and am really impressed. Maybe a write-up section with maintainence members have done would be a cool addition. It may seem lame to the pros but it'd be priceless to Bonneville newbies like me. Maybe I'll try and whip one up for the tuneup I do.

Any tips for the fuel filter or PCV change? Make sure I have a good catch can for the fuel? Lines pressurized?