engine SEEMS to lack power

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Sep 30, 2008 | 03:01 PM

#16

Style

Registered User

Joined: Jan 2003

Posts: 105

From: Milwaukee Area, WI

Quote:

Originally Posted by x24-7x

it is running in open loop..it seems to idle fine but under any load at all it pretty much runs terribly..but once it warms up and gets into closed loop it almost clears up completely.. o2 sensor maybe??

If it ran like crap once in closed loop, then O2's would be a possibility. Can you get a hold of a scanner?

Sep 30, 2008 | 03:18 PM

#17

mrmint69

Registered User

Joined: Oct 2006

Posts: 2,728

From: Post Falls, Idaho

Pcmforless.com did my tune. They emailed it to me and I loaded it from an email. Then they sent me updates after running a datalog. The cables I bought on Ebay came with the disk that had several free software programs. http://cgi.ebay.com/ebaymotors/GM-AL...spagenameZWD1V
Having to do nothing more than fill out a form and hook up a laptop and run a program was what made me so interested. The $75 fee and not having to send in my pcm was another reason.
http://www.pcmforless.com/index.php?...d=44&Itemid=40

Sep 30, 2008 | 05:36 PM

#18

96' Formula WS6

Registered User

Joined: Oct 2006

Posts: 377

From: Green Cove Springs FL

Quote:

Originally Posted by x24-7x

are there any immediate problems i should check for? occasionally when im just cruisin along not under heavy acceleration it seems to miss a little hear and there. ill be drivin and it kind of jerks every now and again. under acceleration it doesnt really seem to do it except a LITTLE at really low rpms. i may have fouled a plug. iv already checked a few and one seemed to be pretty bad so i replaced it. could this be one of my problems?

was i just expecting to much out of what i got done?? there just doesnt seem to be much of a difference with the before and after..

That jerking and bucking should be cam surge and most of that can be tuned out with a good tune, the plugs might be fouled because the car will be running rich with a stock tune and that cam. Also do you have any other mods like headers or anyhting like that. You really should put in a sig with all your mods and anything you did to your car so we can help you out more.