Search | Car Forums | Gallery | Articles | Helper | AF 350Z | IgorSushko.com | Corporate |
| Latest | 0 Rplys |
02-28-2006, 09:37 AM | #1 | |
AF Newbie
Join Date: Feb 2006
Location: statesville, North Carolina
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
|
Need help ecu prob
I hope you don't mind me posting a question on this site I have a 91 jimmy and I was wondering if you could tell me the best chip for it. It has been bored .60 over and has a comp stage 2 cam and had the heads rework. Now haveing problem after the ecu takes over. If you unhook the batter and what for the ecu to reset and hook it back up it runs great for the frist 15 min and then the ecu kicks in.
|
|
03-02-2006, 03:44 PM | #2 | ||
AF Newbie
Join Date: Nov 2003
Location: Lake McQueeney, Texas
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Need help ecu prob
Quote:
__________________
Rick '92 GMC Typhoon, '83 Porsche 944 |
||
03-11-2006, 08:25 AM | #3 | |
AF Newbie
Join Date: Dec 2004
Location: Savannah, Georgia
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Need help ecu prob
Like Rick said, disconnect the O2 and see if it helps. The ECM should default to stoichiometric O2 mVs and act like all is well with the AFR. If this remedies the problem, it could indicate a faulty O2 or a serious closed loop fueling issue. Do you have a rich or lean condition when in closed loop? (Do you smell fuel and foul plugs or do you have to keep you're foot in the gas to help it run?)
FWIW, when I upgraded the cam in '90 Jimmy DD, I had to make some noticeable adjustments to the VE maps to compensate for the altered rpm range. You may have to do the same. Check the O2 and we'll go from there. |
|
|
POST REPLY TO THIS THREAD |
|
|