Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

Power-washed engine- BLMs to 160 both sides

Thread Tools
 
Search this Thread
 
Old May 28, 2005 | 12:17 PM
  #1  
elisowski's Avatar
Thread Starter
Registered User
 
Joined: Sep 2004
Posts: 271
From: Canfield, OH
Power-washed engine- BLMs to 160 both sides

Cleaned the engine last week with a power washer. Logged in datamaster and my long term BLMs in all fuel cells climb to 160 within 30 seconds.

Dried out all connectors that I could find. Checked the all the areas where I believed there could be a vacuum leak.

Programmed out the MAF so I could check to see if that was the problem. Car ran way worse in open loop and would barely start. Ran great after 5000 rpm though.

Set the injectors to 24 lb/hr to richen up the mixture. The BLMs will stay in the 135-140 range when I do this but it runs pig pig rich.

I CHANGED THE OPTI yesterday. No change. It is something that affects BOTH SIDES of the motor.

What else could it be?

What vacuum leaks have you guys found on your car?

HELP!!!!
Old May 29, 2005 | 11:09 AM
  #2  
bunker's Avatar
Registered User
 
Joined: Aug 2000
Posts: 4,305
From: North Vancouver, BC
Re: Power-washed engine- BLMs to 160 both sides

Well no MAF will do it.
Old May 31, 2005 | 02:30 PM
  #3  
elisowski's Avatar
Thread Starter
Registered User
 
Joined: Sep 2004
Posts: 271
From: Canfield, OH
Talking Re: Power-washed engine- BLMs to 160 both sides

It was the MAF.

Swapped it out this morning with one out of my buddy's car.

MAF was only reading 87% of incoming air (237 vs +/- 270). PCM was only adding in enough fuel for the 237 grams. O2's would read lean and add more fuel causing the BLMs to lock at 160.

Runs great now. Atleast I've learned how to change the opti.
Old May 31, 2005 | 04:43 PM
  #4  
MaxLean's Avatar
Registered User
 
Joined: Mar 2003
Posts: 159
From: San Jose
Re: Power-washed engine- BLMs to 160 both sides

Originally Posted by elisowski
It was the MAF.

Swapped it out this morning with one out of my buddy's car.

MAF was only reading 87% of incoming air (237 vs +/- 270). PCM was only adding in enough fuel for the 237 grams. O2's would read lean and add more fuel causing the BLMs to lock at 160.

Runs great now. Atleast I've learned how to change the opti.

This is totally off topic, but I was wondering if you could answer a question about the lt1 edit mailing list. I'm subscribed to the list and was reading your postings, so I know you're a member too. My question is, every time I try to post a response or a new topic on the mailing list, my post is "held for moderator approval". Well, none get approved and I therefore can't post! I don't think others go through this as people are responding to posts in real time. Do you have any insight on this?
Old May 31, 2005 | 05:44 PM
  #5  
bunker's Avatar
Registered User
 
Joined: Aug 2000
Posts: 4,305
From: North Vancouver, BC
Re: Power-washed engine- BLMs to 160 both sides

Originally Posted by elisowski
It was the MAF.
I'm glad it was LOL.
Old Jun 1, 2005 | 01:07 PM
  #6  
Demus's Avatar
Registered User
 
Joined: Apr 2004
Posts: 261
Re: Power-washed engine- BLMs to 160 both sides

Originally Posted by MaxLean
This is totally off topic, but I was wondering if you could answer a question about the lt1 edit mailing list. I'm subscribed to the list and was reading your postings, so I know you're a member too. My question is, every time I try to post a response or a new topic on the mailing list, my post is "held for moderator approval". Well, none get approved and I therefore can't post! I don't think others go through this as people are responding to posts in real time. Do you have any insight on this?
I'm pretty sure all responses have to be approved by the moderator. I've sent a few, and they had to be approved. Perhaps there's a reason they're not being approved, like the question you're asking has been asked before. The original message you got when you joined the LT1 edit mailing list will give you more information than I can.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dbusch22
Forced Induction
6
Oct 31, 2016 11:09 AM
Fastbird93
Parts For Sale
24
Apr 9, 2016 07:01 PM
Bobczar
New Member Introduction
1
Oct 23, 2015 11:22 AM
Fastbird93
Parts For Sale
3
Jul 11, 2015 04:37 PM
chevroletfreak
LT1 Based Engine Tech
202
Jul 4, 2005 05:00 PM




All times are GMT -5. The time now is 05:38 AM.