PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Codes p0102 and p0803 Need help..

Old Aug 7, 2011 | 09:58 PM
  #1  
bigfatls6's Avatar
Thread Starter
TECH Resident
iTrader: (34)
 
Joined: Jan 2008
Posts: 899
Likes: 0
From: Houston Tx
Default Codes p0102 and p0803 Need help..

I recently picked up a 6 speed 2002 z28 that had not been run for a while. The car has 47k miles has heads, ASA cam , slp long tube headers and basicly full bolt ons. It has the p0102 and p0803 codes. I tried swapping the mass air flow sensor and it still shows to have the p0102 code. It also seems kind of hard to get it into reverse. Like its hard to push the shifter over to where reverse is at. I am not sure if the previous owner had the same problem or if this is just something caused by the car sitting with out being ran. It smells like the car is also running rich at idle.
Any one have any suggestions where I should start looking first?
Reply
Old Aug 7, 2011 | 10:28 PM
  #2  
bigfatls6's Avatar
Thread Starter
TECH Resident
iTrader: (34)
 
Joined: Jan 2008
Posts: 899
Likes: 0
From: Houston Tx
Default

Ok I found the eng sen fuse blown so now im going to have to go thru the o2 sensor wires with a fine tooth comb t osee if I can find a short. Im thinking probly on the passengers side. I saw already where some one put some kiind of heat wrap on the wires were they were close to the header on that side. Man slp headers kind of suck I guess.
Reply
Old May 7, 2013 | 07:40 PM
  #3  
KILLERxSS's Avatar
Staging Lane
10 Year Member
iTrader: (1)
 
Joined: Sep 2012
Posts: 56
Likes: 1
From: Detroit MI
Default

did you find the solution? i have the same thing happening
Reply
Old May 7, 2013 | 07:44 PM
  #4  
camarochvy21's Avatar
TECH Regular
iTrader: (4)
 
Joined: Jul 2005
Posts: 437
Likes: 0
Default

Old thread man
Reply
Old May 7, 2013 | 08:08 PM
  #5  
KILLERxSS's Avatar
Staging Lane
10 Year Member
iTrader: (1)
 
Joined: Sep 2012
Posts: 56
Likes: 1
From: Detroit MI
Default

Yeah thought so:/
Reply
Old May 7, 2013 | 11:28 PM
  #6  
wait4me's Avatar
TECH Addict
iTrader: (10)
 
Joined: Feb 2003
Posts: 2,961
Likes: 2
From: warsaw, in
Default

some cars throwing the p0102 might just be tuned for speed density, so make sure that it is not supposed to be throwing that one on purpose.
Reply
Old May 7, 2013 | 11:42 PM
  #7  
KILLERxSS's Avatar
Staging Lane
10 Year Member
iTrader: (1)
 
Joined: Sep 2012
Posts: 56
Likes: 1
From: Detroit MI
Default

Mine didn't have no codes when I first got it .... Could changing elevations have anything to do with it ?
Reply
Old May 7, 2013 | 11:47 PM
  #8  
wait4me's Avatar
TECH Addict
iTrader: (10)
 
Joined: Feb 2003
Posts: 2,961
Likes: 2
From: warsaw, in
Default

not on a p0102.. It could be bad sensor or wiring to the sensor.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old May 7, 2013 | 11:53 PM
  #9  
KILLERxSS's Avatar
Staging Lane
10 Year Member
iTrader: (1)
 
Joined: Sep 2012
Posts: 56
Likes: 1
From: Detroit MI
Default

Dam :/ ...somethings going on here
Reply
Old May 7, 2013 | 11:53 PM
  #10  
camaroz98's Avatar
Staging Lane
iTrader: (1)
 
Joined: Mar 2013
Posts: 75
Likes: 0
From: edwards afb CA
Default

Originally Posted by KILLERxSS
Mine didn't have no codes when I first got it .... Could changing elevations have anything to do with it ?
for p102 check eng sensor fuse seems to be a big problem
Reply
Old May 7, 2013 | 11:56 PM
  #11  
KILLERxSS's Avatar
Staging Lane
10 Year Member
iTrader: (1)
 
Joined: Sep 2012
Posts: 56
Likes: 1
From: Detroit MI
Default

Every time I replace the fuse it blows so got to figure out why
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 01:25 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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