NAIOA.comNAIOA.comNAIOA.com
 Create an Account
 

  
NAIOA Impala Forums :: View topic - gen v problems
GarageGarage    1/4 Mile Table1/4 Mile Table    Forum FAQForum FAQ    SearchSearch    UsergroupsUsergroups   MedalsMedals
MemberlistMemberlist   ProfileProfile    Watched TopicsWatched Topics    Log in to check your private messagesLog in to check your private messages    Log inLog in 

gen v problems

 
Post new topic   Reply to topic    NAIOA Impala Forums Forum Index -> 2000-2005 Engine, Exhaust and Transmission
View previous topic :: View next topic  
Author Message
Scotty455
Forum Regular
Forum Regular


Joined: Sep 06, 2010
Posts: 111
Posts per day: 0.04
Location: Iowa

2004 Chevrolet Impala
1969 Chevrolet Chevelle


PostPosted: Mon Mar 05, 2012 12:58 am    Post subject:  gen v problems Reply with quote

Ive been posting on grandprixforums and no one can really think of anything else to do so I figured id get a second opinion here.

So I finished my gen v swap last Tuesday and car ran fine until I tried going WOT. The car would sputter and my aeroforce would say there was 4-6 misfires, seemed like a lot more than just 4-6 to me. Anyway the car ran perfectly just cruising around as long as I didnt get on it so I drove it home and waited til morning to figure it out. I checked out my plugs (just installed new autolite 104's) I gapped them to .050" when I first installed them. Buddy of mine told me to gap them to .055" so I did and nothing changed. Checked the northstar connections and everything was fine. All wires were on the plugs and coil pack. While driving around after checking the wires and plugs I got a check engine light. Aeroforce gauge gave me 4 codes. They are: P0101, P0102, P0113, and P0172. All MAF sensor codes since the IAT sensor is in the LQ4 maf sensor. Last one is bank one rich code. LTFT bank 1 was -22.6. I cleaned the MAF and still ran the same. I swapped the MAF with the one out of my grandpas truck with the LQ4 motor. Still ran the same. I called Intense where I got my PCM tuned for the LQ4 and he said it showed on his computer than it should have been tuned for it but there is no way to know for sure unless he had the PCM in front of him. We also made sure the pigtail for the lq4 sensor was wired up correctly which it was. He told me he was going to call around and see if anyone has had this problem before and let me know friday but I never heard from him. Will be calling tomorrow. He suggested just unplugging the connection for the maf sensor until we figure it out. I did and the car runs perfectly except for the 5.5-6* of knock I get if I get on it but no misfires and am still getting the P0102. So does anyone else have any idea what it could be?
Back to top
View user's profile Send private message
nightryder
Master Level
Master Level
Silver Contributor (Amount: 1) Silver Contributor


Joined: Oct 18, 2006
Posts: 3256
Posts per day: 0.82
Location: Lockport NY

2001 Chevrolet Impala
2005 Subaru Impreza


PostPosted: Mon Mar 05, 2012 12:09 pm    Post subject:   Reply with quote

Something is wrong with your tune, MAF, or wiring for the MAF.

First things first, DO NOT go anywhere near boost without your MAF sensor plugged in...better yet dont drive the car until you figure this out.

The code is there because your MAF is unplugged. Im suspecting something is wrong with your MAF wiring. The KR is present because the PCM has no idea how much airflow there is, its using your VE tables to determine fueling and without extensive car specific tuning that is a VERY bad situation.

If you know someone with a tuner have them pull your .bin off the pcm and ill verify that its tuned for the lq4.

_________________
Back to top
View user's profile Send private message AIM Address
Scotty455
Forum Regular
Forum Regular


Joined: Sep 06, 2010
Posts: 111
Posts per day: 0.04
Location: Iowa

2004 Chevrolet Impala
1969 Chevrolet Chevelle


PostPosted: Mon Mar 05, 2012 12:35 pm    Post subject:   Reply with quote

I realize that code shows up because its unplugged. I was just giving out all the info I could about the situation. I talked to john from intense who did the tuning and we went over the pigtail for the maf since he had one and mine was wired up the same as his so I doubt its the wiring. I swapped maf sensors with a known good one and both vehicles ran the same with opposite maf sensors so it can't be that. Which leaves the tune. He is almost 100% sure it got downloaded to my pcm but there's no way to know for sure I thought it was the tune but I don't want to start pointing fingers until I know for sure.

*Edit* Just talked to john from intense and he said he talked to some others and the general consensus was that the wiring pigtail that makes the maf sensor and iat sensor into one for the lq4 could be bad and i shoud try to get a new one from zzp. Anyone else have or heard of a problem from a lq4 kit?
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    NAIOA Impala Forums Forum Index -> 2000-2005 Engine, Exhaust and Transmission All times are GMT - 4 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001, 2005 phpBB Group
Forums ©
All logos and trademarks in this site are property of their respective owner. Comments and posts are property of the poster. All other content is © 2008 by the NAIOA.


Use of this site constitutes agreement with the NAIOA Terms of Service (TOS)


PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.
Server Local Time: September 24, 2017, 5:28:11 am
Page Generation: 0.10 Seconds ( SQL 21:105 in 0.00 Seconds )