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Can I Play by Alan Gage  (part one) 95 Aurora P0013  (PCM)
Can I Play (part two)
Alternator Not Charging      By Miles Wada              

 Part 1

Cavalier PCM Controlled 
Alternator Not Charging   

 Part 2

Alternator Not Charging

 Part 3

Alternator Not Charging

Part 4

Hesitating Buick                     By Mike Herbert
Rough Intrepid                       By Mike Herbert
Chrysler CMP Failure            By Dave Sharp
GM EST Fun                         By Miles Wada GM EST 
A Sure Diagnosis?                  By Miles Wada GM EST -- DTC P1361
Burnt Twice                           By Miles Wada GM CPI Injector 
Code 42 Drill                     Study Here Puzzle Solved DTC 42 -- Bad PCM
Quick Quiz Follow up 89 Olds 3.1  EST Circuit
Too Sexy for my Shirt The Fix 96 S10 Poppet Injectors
3800 Misfire                     A Diagnostic Approach Why the CKP 3800 CKP Sensor
Weird Charging System Problem      Almost Done The Fix PCM controlled Alternator
Intermittent Misfire Questions Sticking Poppet Nozzles
Fuel Pump Waveforms Follow up Fuel Pump Amp Waves
The Feel... Working smart 89 Astro ICM problem
OBD2 Hair loss Carbon fix? Carbon and Misfires
Mekaniks at Work The Fix 83 S10 Pole Piece Failure
Are you in Sync? The Fix 96 S10 CKP and CMP
OBD2 Intermittent The Fix 2000 7.4 P0102 & P0446
Metro Glitch The Fix Bad Ground - scan data
Multiple OBD2 DTCs P0122,P1404,P0300,P0141
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February Articles
Information Overload 99 Truck Vacuum Leak
On Fire Malibu Quad 4 coil and Cat Conv
Poppet Nozzles... Just say no! 97 Truck bad Dist  Cap
Visiting the past 95 Truck DTC 34 - wiring
March Articles
Gravy Tuneup? Bad intake valves
Misfire Misconceptions Bad wire, no misfire count
Hi Yo Silver.... ado LS1 bad 24x reluctor
Old Truck? TBI-DTC 33-Injector
April Articles
Idle Flare Up 94 Opti-Spark Distributor
Under Pressure OBD2 Evaporative System
Out  of Control IAC System Explored
Old Tech OBD2 Marriage LT1 EGR System
May Articles
Poor Acceleration  Need Hearing Aid KS impaired Performance
Pattern Failure Letdown Roll Your Own Metro Evap System Failure
Flow During Non-Purge A Micro Problem Non-Enhanced GM Evap
COP Truck Quick COP Fix Coil Over Plug Failure
June Articles
Hacker Headache Easy Money 91 Vett No Start   (EST)
Pattern Failure Bonanza Warranty Gravy Fuel Rail Deposits (TSB)
Sluggard The Big 3 MAP and Plugged Exhaust
Sheriffs in Town Gravy Stalling and Fuel Trim
Intermittent OBD2 Hard to Explain Linear EGR Testing
July Articles
A Simple Problem No simple answer 96 Cavalier Evap System
Fender Brain Exposed... 99 Cavalier CTS System
Fateful Decarbon Low Compression 96 C Truck Misfire
Failure Records FRs Reveled How Failure Records Work
Take 5 #1 Alternator Waveforms
Take 5 #2 Carbon Tracking
August Articles
Curve Ball Straightened Out Quad 4  Loss of Dref 
More EGR Fun Flash Me! P1404 -- Closed Pintle Error
Knock Knock Wrapping it Up Vortec Knock Sensors
Misfire Mystery Mystery Revealed Vortec CMP Offset
Sob Story Tissue Applied 3800 IC Circuit Error
Take 5 #3 Bad Fuel Pump  and DTC 32
Take 5 #4 Common Evap Leak
Take 5 #5                                   By Bill Baker Fuel Gauge Error
Take 5 #6 Dirty EGR Pintle
September Articles
Software Glitch? Nooope! Cat Converter Diagnosis
Chrysler AIS Strategy                   By Dave Sharp MS IE ONLY! Chrysler AIS Tips
Take 5    No Start Astro Burnt Power Block
Take 5    CMP Offset Correction Vortec CMP Offset Info
Mixed Up SS Unraveled 96 Caprice Evap System
Jeep CMP                                     By Dave Sharp MS IE ONLY! Excellent Jeep Information
Stupid MIL O2 Sensor Contaminated O2 Sensor
Take 5  Prizm O2 Bad O2 Wiring
Confused Malibu Another O2 Fuel Trim Index
Stalling NS Body Vans                   By Dave Sharp Chrysler Goody !!
October Articles
County Curse Deliverance Trans Failure Stall Out
Real Specs Part 2 MAF Wiring and no load
Simple Things Stupid People 1991 S10 Loss of 5v Ref
Take 5  Diagnostic Shortcut Amp Wave Starter Diagnostic
Quick Decision Long Explanation Multiple OBD2 DTCs
Rich APV Vapor... Purging at Idle
November Articles
Fast Idle Metro Solved.... Scrambled PCM Memory
Nutty S10 De-Nutted High Idling S10 (walnut)
Take 5 Chilly No Start No Start Truck -- CTS --
Misfire Counters Again... Misfire Counters Revisited
Root Cause Letting Go P0300 and P0400
1990 Snapshot The Fix Flaky TPS
MissWire Faulty Misfire Counting
December Articles
Engine Goes Died? A Matter of Timing 95 Astro Stall -- Timing
Ack! No Scanner... Love Them GEOs 91 Geo Tracker Injector
Tracker MIL - No Codes 95 Tracker Mileage Switch
A Matter of Theory Quick Fix P0101  -- MAF Debris
Testing Our Theory Slam Dunk Plugged Exhaust -- P0101
Alternators Part 5 98 Malibu Alternator

Happy New Year!

January 2001 Articles
Knock, No Knock? No Knock Knock Sensor Noise Channel
Low Power O2 Monitoring Keep An Eye On The O2
Pattern Failure? Refreshing Change Open PCM Injector Wiring
Knock Sensor Test Clarification Clarification of KS test
Oldies... But Goodies 3.1 CKP Harness Failure
Aint Got No Flow Codes The Fix LEGR Flow Error P0401
LEGRs Continued Finally Done! LEGR Pintle Error Codes
February 2001 Articles
The Dreaded Code 42 Acid? 93 Corsica Code 42
ABS Blues ABS and Wheel speed
Tracking Changes The Future Geo Changes (prom cal)
TAC Communications      Clarified? TAC System and Serial Data
Hesitating G Van    EGR Issue
Big White Truck Dissection Balance Pump (dual tanks)
3.4 Vin S EGR Passage
March 2001 Articles
Another 3800 The Rookie Scores Bad ICM Causing Stall
Scan Fix Incorrect Sensing Bad CKP Wiring
VDR Capture The Analysis Intermittent MAF Sensor
False Heater Code Poppet Nozzles Cause Error
Lambda Scan I've Got Gas A Look At Lambda
Odd Things P0336 -- Low Fuel
April 2001 Articles
Misfire Counters (again)  Part 1 1996 Misfire Counters
Fly's, Pepper, and 200 ms Lucky Guess? TPS Glitch
Misfire Counters (again) Part 2
Heater... Follow the link Current Monitored Heater
Snapshot The Analysis P0172 and P0108 -- MAP
Yes, Another Alternator Alternator amp wave
Mystery No Fix.. Until Now Calibration Fix
Strategy Better Or Worse Strategy with bad injector ct.
May 2001 Articles
Parts Swapper The Fix
Breakdown 1995 Geo Prizm Coil
adVenture Fooled....
The Guess The Fix
Coil Tunneling DIS Coil Tunneling
Hard Start Slipping IAC Bad IAC and MAF System
June 2001 Articles
My Reward Passlock Operation Passlock Operation
Vacuum Bad Timing Belt
Data In Conflict What is ground? Bad CMP Sensor
Quick Bucks? Weak Fuel Pump Vortec Fuel Pump
Broken Rotor Vortec with broken rotor
Plugged Injectors All 6 Poppets pluged
Opening Poppet Nozzles With Nitrogen Same as title....
Gravy Bad O2 Sensor P0410 and P0130 (S10)
July 2001 Articles
86 Vette Gravy Lapping It Up More Bosch MAF Stuff
Opti-Spark Misfire Bad Distributor Cap
I'll Give You One Last Chance Assumptions Air Pump System - P0410
MAF System Quiz The Answer
Low Power Quiz The Answer Late Ignition Timing
Family Outing Rare Fix MAF Sensor Failure
The Basics Feeling Stupid Fuel Quality Stallout
Current Romper Aftermarket Parts Low Fuel Volume
August 2001 Articles
Need a Laxative? Getting the dirt out 2000 Silverado P0446
P0xxx vs P1xxx More Sensitive TPS and EGR (98 7.4)
Pump Current and Plugged Filter Current drop after filter
Stalling Grand Am Not Much Authority
Analysis Survey Says! More dirty fuel injectors
September 2001 Articles
To Scope or Not to Scope 87 Vette Code 34 -- ECM
Got Gas? More Fuel Pump amp ramping
Experience Leaking EGR -- LT1
Pirate Air Broken PCV Valve
Load... Engine Load Definitions
Freeze Frame Analysis     Analyzing Freeze Frames
TAC Patrol Throttle Actuator Error
Bad COP Shorted COP coil
October 2001 Articles
The Other End Light Load Misfire Look...
Snapper   Compression and KVs
That Place..    O2  Low Voltage Codes
Dinosaurs        CCC Data Streams
More Precision Guess Work 3.1 MAF Sensor Stall
Stall Out -- Fuel Pump Relay   88 Vette Stallout -- FP Relay
Tracker Stall   Tracker -- Low MAR Stall
November 2001 Articles
Strange Union 3.1  IAT and Misfires
Driver Sensing Failed PCM driver  supply
Sucker... Leaking CPI Tube/Assembly
Lambda Look Fuel Trim and Lambda
To Skin a Cat TPS Glitch
December 2001 Articles
Cold COP PCM  Driver Failure (COP)
P1404 Blurb P1404 Software Fix Info
Data Window Stalling and ECM data line
Compare Me
Out Smarted Again    Eng Miss - Injector wiring
Jerky Astro Bad CPI Connection
Head Banger Solved... Idle misfire - switched inj wire
January 2002 Articles
It Just Died... Stuck TCC Solenoid Stall
Old Pile
Take Your Best Shot 2000 Malibu Stall 
Them Darn Batteries Batteries and AC voltage
Aurora # 1 PCM CTS Spike
Strain Me   Bigger Fuel Strainer
Aurora # 2    No Start -- Bad chain
February 2002 Articles
Aurora # 3 Ignition Ref Low & Misfire
Scanner Kill CKP signal and RPM
Going to the Prom Prom induced misfire
On a CKP Roll.... P1336 and corroded battery
Rough Idle and  Code 32    High Fuel Pressure -- DTC 32
Intermittent CKP     P0339 Failure Record Data
March 2002 Articles   
Explain this to me Open Loop STFT....
Ya just got to know.... False P0171 -- Flex joint
Fuel Trim Blurb Fuel trim enable/learn
Fuel Trim Questions From the forum...
Aurora # 4 Aurora V8 CKP Info
College Beater Brake booster and fuel trim
Wiring... Idle surge and A/C wiring
April 2002 Articles   
Smog Failure Timing and EGR EVRV
Duramax Diesel   Duramax calibration fault
Quick decision    fuel pump, cmp offset,  EGR
Slow scan data?    Glitch in CKP signal
Oil cap quiz Oil caps and fuel trim
Baffled     Loose intake tube  havoc
May 2002 Articles   
Another AdVenture Hard start and cam sensor
Toggle Me      Quad 4 map hose
Easy to fix, hard to explain   Negative FT P1415
Stall out...       3800 CKP Stall
Olds 3.5L Dual CKP Sensor    2000 Olds  3.5L Dual CKP
June 2002 Articles     
Cranky      3800 Stall -- CKP
RPM glitch      2002 4.3L CKP Glitch
Spin me Electro-Viscous Fan
Multiple DTCs   
Protocols
July 2002 Articles     
The Glitch Stray KVs...
Opti-spark issues Opti-spark leaking wire
Get in, get out, move on Ign 0,1,& 3
Not another truck      5.7L Intake Leak and Miss
Mega Code Nightmare Acid and low current circuits
August 2002 Articles       
The Smog Inspection     Shorted O2 and P1870
Aurora time again   1995 Aurora ISC Motor
3800 Roachmobile        1992 3800 DTC 17 & 34
A quick quiz Short Answer Misfire and fuel trim
More pattern failure nonsense
September 2002 Articles
No History Misfire and no history counts
Trigger happy Misfire -- PCM ground 
Bang     Silverado MAP failure
Mystery P0304     Low fuel volume P0304
You can't have my amp probe Amp probe and no fuel
Another odd misfire Carbon and misfiring
No gravy today Cracked S10 head (2.2L)
October  2002 Articles
Magic 2.8 Idle learn explained
Lambda misfire? Open injector misfire
Luke, trust your feelings....                    MAF failure 
SVS vs SES Service vehicle soon lamp
Leaky sandwich Silverado evap canister 
Stuck         Silverado MAF failure
Quick money?               ECM -- voltage correction
November  2002 Articles
Snapshot... 2000 Astro Misfire
Corvette fun 1987 Bosch MAF sensor
Things we hold true...    3 wire TPS oddity
Odd MIL Evap FF oddity
Exhaust rattle Astro exhaust rattle
Avoiding my DSO Snapshot analysis
December  2002 Articles
Rough big block Leaking 7.4 fuel regulator
Expensive repair? 89 Corvette MAF failure
Volumetric Efficiency (part 1) VE and new diagnostic tool
Open loop fuel trim A look at open loop trim
Oops... Affects of loose PCV vent
Another misfire and fuel trim     No spark misfire and trim
Training time          Opti-spark case study
January  2003 Articles
Volumetric Misfire Plugged Cat and misfire
Which DTC first? 96 Big block multiple codes
OBD 1 Oldie 89 Truck TBI failure
Defective Mentor 97 Astro - fuel level module
3.4 X Motor EGR 92 3.4L X motor -- EGR
February  2003 Articles   
LT1 Misfire    LT1 Opti-Spark
Blow Hard 2002 LS1 Air Pump Valve
I Wanna Start 1999 Astro VTD fault
Stall Out Silverado Stall -- fuel pump
Fuel Trim Experiment Misfires and fuel trim
Flash Fix 2000 Astro P0147
March  2003 Articles
Odd Find 94 Astro LEGR failure
Another stall concern 95 3800 Stall (fuel reg)
Mystery Misfire  96 S10 O2 Sensor Surge
Fuel pump test 7.4L  WOT fuel sys test
Current ramping and 5 gas Bad DIS coil and 5 gas
Policy repair?  P1351  (open coil wire)
April  2003 Articles   
Knock Sensor Circuit    2000 Express KS circuit
System Strategy 2003 Silverado -- MAP
CA Smog Failure 89 5.7L Truck -- smog failure
Enhanced P1441 Evap purging issue
Another CA Smog Failure Backwards EGR
Oops.... 91 Chev truck - distributor
Open wire Misfire counts - open wire
May  2003 Articles       
Intrigued   
Alero from hell
Pick your battles
County cars
It just quits
Questions
June  2003 Articles  
Contradiction Trim codes and an air filter
Pattern Failure P0304 pattern failure
Freebie? Poppet Nozzle issue
P0401 K motor missing PCV
O2 Heater Circuits PCM controlled heaters
Multiple problems? O2 failure -- false P0410
July  2003 Articles     
Problematic Misfire Crankshaft variation relearn
Limited Info CKP Trigger error 
Strange Misfire HVS CMP failure misfire
No Crank Venture Van Passkey 3
August  2003 Articles    
Hard Start Silverado hard start
Nightmare Riviera 3800   P0341 & P0121
Liar 2000 Big Block misfire
Low Voltage Shorted 5v Reference
Fuel Pressure Dip Normal fuel pump leak
September  2003 Articles
Won't Crank Charging System Look
Flash Me? Camaro P1870
Distribution Issue Astro HVS Ignition
Another Misfire Plugged Cat -- Lean bank
Pattern Failure Plugged Cat -- EGR
Ping Bad Transmission
October  2003 Articles  
Lean Machine Lean Silverado (TB coking)
Prizm P0171 Lean -- MAF failure
DuraJunk Duramax IAH failure
Novermber  2003 Articles  
Fire Line Big Block leaking injector
Old Car 89 3.1L Shorted Injectors
Express Van Rich code Lean condition
Detection Error 3 Dead Holes 1 misfire
December 2003 Articles  
Thats Odd Air Injection -- 2002 G van
Smog Failure 2001 Impala -- converter
Stall 1998 G van wiring - stall
Surge and Stall 1991 Camaro -- injectors
January 2004 Articles  
Name that misfire 6.0 Multec 2 misfire
A tale of two trucks Misfires, fuel trim, & Gas
J body DRL Daytime running lamps
That gas cap code P0440 -- Purge valve
Quick gas analysis Misfire and 5 gas
Smog check 5 gas -- smog check
NOx failure 2.2L -- NOx -- Catalyst
February 2004 Articles  
Multiple misfires 1500 -- misfire -- gas look
Access Gas analysis -- opti-spark
Tranny problems 92 truck trans codes
Code 36 stall Code 36 -- CKP air gap
Weird 1500 replacement injector
Fuel pumps CPI fuel pump issue
Senseless Silverado fuel gauge issue
Guess that misfire 5 gas analysis
March 2004 Articles  
Evap Problems Enhanced evap problem
Big Block Problems 95 1500 Ign Module
Strategy 96 1500 Air Injection
Quick Gas Analysis 5 gas analysis
VE Look Volumetric Efficency diag
Gas Applet Test 6 gas analysis
April 2004 Articles  
Stupid Asian Vehicles Tracker evap problem
Lumina X 96 3.4 X motor PCM
Guess that misfire 99 1500 V8 misfire
Misfiring Vette 85 Vette misfire
May 2004 Articles  
Is there a leak?  
Generic  
No power  
My tax dollars at work  
Point of reference  
Freak  
June 2004 Articles  
Quad 4 misfire  
Another quad 4 misfire  
Fuel pump waveform  
July 2004 Articles  
That darned ignition system  
3800 misfire  
Surges and stalls...  
No start  
August 2004 Articles  
One or two?  
Quad 4 smog failure  
No power  
Another no start  
September 2004 Articles  
What to do  
Don't get burned  
Something new! And old..  
Hard start  
October 2004 Articles  
Leave the hood closed  
Self inflicted wound  
Communications error  
To Flash?  
November 2004 Articles  
Talk to me  
No start  
No start 3100  
Long crank time  
Quick diagnosis  
December 2004 Articles      
Misfire  
Lack of power  
Dang lifted trucks  
January 2005 Articles    
Reduced power  
Small evap leak?  
Your approach?  
That cursed thing  
Simple fix?  
February 2005 Articles         
1990 stall  
I'm so smart  
Freak stall  
Another gas cap code  
Extended crank  
March 2005 Articles  
Tough misfire  
Rough, no crank  
TAC failure  
TAC failure 2  
Clean or replace  
Puzzled  
April 2005 Articles  
TAC: Finishing up  
No crank  
Metroid  
High Idle and Surge  
May 2005 Articles  
Bad misfire       
Hesitation  
Twice a day  
GM Love  
June 2005 Articles  
Load wrap up  
Type C MIL?  
TAC TAC TAC  
Gray Areas  
Blown Duramax  
July 2005 Articles  
No crank  
That Electro-Fan  
Guess that misfire  
Lack of power  
August 2005 Articles  
Lack of power 2  
No get up and go  
Poor running  
Easy money?  
September 2005 Articles  
How to proceed  
Evap system trivia  
Circuits  
MIL  
October 2005 Articles  
New stuff  
Vin F  
Components  
Quick  
November 2005 Articles  
What is this?  
No crank  
New code  
Strange behavior  
No start  
December 2005 Articles  
Pattern failure  
K&N Power?  
No start -- A closer look  
Potential?  
January 2006 Articles  
30 seconds  
Questionable traction  
3 in 2  
5 cylinder magic  
February 2006 Articles  
Grand AM  
GMLAN  
Another Duramax  
Pattern failure?  
March 2006 Articles  
3500 valve deposits  
The bad guy  
Bad Vibes  
A tip!  
Oops  
April 2006 Articles  
Shotgun  
Shotgun questions  
Flop test  
Educated guess  
The truth  
May 2006 Articles  
Balance  
Old car  
No power  
June, July, August 2006 Articles  
Tough call  
Electro-Viscous fan  
The stall  
Quick look  
Trouble  
September 2006 Articles  
No charge  
Scope jockey  
Review  
October 2006 Articles  
Canyon trouble  
Rough  
Scanner review  
FirstLook  
November 2006 Articles  
Hummer meets the FLS (first look sensor)  
Warranty scan  
Da cat...  
December 2006 Articles  
Duramax explained part 1  
More FLS?  
January 2007 Articles  
5 minutes
Silverado Crank Sensor
February 2007 Articles
2006 GTO misfire
Duramax explained part 2
Gas misfire analysis
March 2007 Articles
GM goodwill repair
Vibe evap system
April 2007 Articles
Envoy P0130
07 Yukon long crank to start
End of 2007 articles
 

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