PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

i need some help

Thread Tools
 
Search this Thread
 
Old Sep 7, 2005 | 08:17 PM
  #1  
jimmy 2 Times's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: Nov 2002
Posts: 1,067
Likes: 0
From: norristown PA
Default i need some help

okay, so i recently installed a new air lid (the old one was cracked) ever since then, i have set off a code 0102. I have read the description on gearchatter.com. The only reasonable thing i could think of is a vaccum leak after the MAF. But i dont see anywhere where it could be. Im not a tuner by any means. I was wondering if you guys could suggest how to fix this.

I have read the description, but in order to trouble shoot, you need to understand it, which i am a bit confused over some things, and i dont have the schematics that it talks about. could some one help me with some insight on my problem

here is the DTC troulbe shoot for your convience
http://gearchatter.com/viewtopic9176...dfd2b41b53e827

thanks so much for the help
Jimmy
Reply
Old Sep 7, 2005 | 08:47 PM
  #2  
jimmy 2 Times's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: Nov 2002
Posts: 1,067
Likes: 0
From: norristown PA
Default

i did some more research, and i checked the fuses, they are good, the 02's are brand new, and not touching anything. i have rehooked up the lid, maf and bellows. and i cleaned the maf with alcohol. and still the p0102.

what gives here?
Reply
Old Sep 7, 2005 | 08:48 PM
  #3  
WS6 RULES's Avatar
TECH Apprentice
 
Joined: Sep 2002
Posts: 366
Likes: 0
From: west coast
Default

Did you have the MAF disconnected and turn on the ingition? That will set a DTC. How is it running? If everything is ok it should reset itself after a few driving cycles. Or you can pull the PCM fuse and reset everything youself, or disconnect the battery and turn the key on for about a minute. If you think you have a vacume leak you can use a spray can of carbutator cleaner. Just spray short bursts in areas where you think the leak might be at idle. If the engine speeds up you found it. Good luck.

Last edited by WS6 RULES; Sep 7, 2005 at 08:56 PM.
Reply
Old Sep 8, 2005 | 12:00 AM
  #4  
jimmy 2 Times's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: Nov 2002
Posts: 1,067
Likes: 0
From: norristown PA
Default

so to check for a leak, just spray car cleaner around the outside of the MAF, bellow, and TB? and if the engine revs faster than idle, that is where the leak is?

also, i have already reset the computer, reinstalled the lid, and i have never disconnected the maf with the ignition on.

I am begining to think that it is not a vacum leak, but will try it tommorrow. Do you have any other suggestions?

BTW, all the fuses were good, except for the air pump (blown) this has been edited out, and all pieces over 2 years ago. should i try replacing that?

thanks
Reply
Old Sep 8, 2005 | 09:03 AM
  #5  
jimmyblue's Avatar
Moderator
iTrader: (11)
 
Joined: Mar 2002
Posts: 12,604
Likes: 7
From: East Central Florida
Default

Pull the MAF connector, inspect the pins on both
sides for push-out or bent, and reseat. If you have
a DMM that reads frequency then looking at that,
at idle, ought to show you a 2-3kHz range of output.
P0102 indicates totally dead, from what I've measured
even still air gives higher output freq than the fail
limit.
Reply
Old Sep 8, 2005 | 11:59 AM
  #6  
jimmy 2 Times's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: Nov 2002
Posts: 1,067
Likes: 0
From: norristown PA
Default

connections are fine. I do have a DMM. where/what wires would i test? and i do have delphi 85mm maf (which was calibrated, by rapid when he tuned my car 2 years ago)
Reply
Old Sep 8, 2005 | 06:49 PM
  #7  
jimmy 2 Times's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: Nov 2002
Posts: 1,067
Likes: 0
From: norristown PA
Default

where can i find the wiring schematic, so i can test the resistance? or does someone know the colors off hand?
Reply
Old Sep 9, 2005 | 09:25 AM
  #8  
jimmy 2 Times's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: Nov 2002
Posts: 1,067
Likes: 0
From: norristown PA
Default

checked with carb cleaner, found no leaks. where do i go from here?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Sep 9, 2005 | 11:10 AM
  #9  
TAQuickness's Avatar
TECH Junkie
iTrader: (28)
 
Joined: Jan 2004
Posts: 3,250
Likes: 1
From: Houston
Default

do you have access to another MAF? Borrow one off a buddies car and see if the code clears.
Reply
Old Sep 9, 2005 | 11:12 AM
  #10  
jimmy 2 Times's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: Nov 2002
Posts: 1,067
Likes: 0
From: norristown PA
Default

i only have a 85mm lid. do you think that i could just run it (not driving) with out the lid and filter on to see if it will clear the code? i wouldn't be driving like that so i dont see the harm. do you think that will work?

thanks again
Reply
Old Sep 9, 2005 | 12:42 PM
  #11  
TAQuickness's Avatar
TECH Junkie
iTrader: (28)
 
Joined: Jan 2004
Posts: 3,250
Likes: 1
From: Houston
Default

I don't think you'd even have to drive it.

If you want to try a new (different) MAF, you can pick one up on ebay for <$30 shipped.
Reply
Old Sep 9, 2005 | 12:55 PM
  #12  
jimmy 2 Times's Avatar
Thread Starter
TECH Fanatic
iTrader: (18)
 
Joined: Nov 2002
Posts: 1,067
Likes: 0
From: norristown PA
Default

i still have my stocker, i will try that
Reply




All times are GMT -5. The time now is 01:18 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE