gta88 flamered

After finishing the no start problem -> here the old MAF problems are returning.
Yesterday after re-start of the hot motor and driving for a few 100m it suddenly stopped and gave me a Code 34.

After deleting the code I started the motor again and got the following readings with Diacom:

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"DIACOM (R) Vehicle Diagnostic Status Report
Place any single line message here
ANYF Stock nach Warmstart u. Code gelöscht 26.05.2005
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VEHICLE CONFIGURATION
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Vehicle Identification Number: 1G2FW2189KL204245
Vehicle Make: PONTIAC
Model Year: 1989
Engine Type: V8
Displacement: 5.7 Liter

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ECM INFORMATION
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ECM MODE STATUS:
ECM PROM ID: 1170

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PERFORMANCE DATA
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Engine Speed................... 725 RPM
Desired Idle Speed............. 663 RPM
Vehicle Speed.................. 0 KPH
RPM/MPH Ratio.................. 255 :1
Coolant Temperature............ 109 C
Start-up Coolant Temp.......... 104 C
Manifold Air Temperature....... 72 C
Throttle Sensor Voltage........ 0.59 VDC
Filtered Load Variable......... 48 g/c
Oxygen Sensor Voltage.......... 549 mV
Oxygen Sensor Transitions...... 194 #
Air/Fuel Ratio (commanded)..... 14.7 :1
Injector Pulse Width........... 2.1 mS
Idle Air Position.............. 25 #
Air Flow Rate.................. 7 GPS
Spark Adv Relative to TDC...... 15.9 DEG
Spark Adv Relative to Ref...... 9.9 DEG
Knock Retard................... 0.0 DEG
Spark Control Counts........... 21 #
Integrator..................... 128 #
Block Learn Multiplier......... 148 #
Block Learn Cell Number........ 0 #
EGR Duty Cycle................. 0 %
Canister Purge Duty Cycle...... 0 %
Cooling Fan Duty Cycle......... 100 %
Battery Voltage................ 13.4 VDC
Fuel Pump Relay Voltage........ 13.5 VDC
Engine Running Time............ 5 Min
Closed Loop Status............. On
Fuel Mixture Status............ Lean
Park/Neutral Switch............ On
Power Steering Switch.......... Off
3rd Gear / OD Switch........... On
4th / 1st Gear Switch.......... Off
Skip Shift Active.............. No
Skip Shift Enabled............. Yes
Cooling Fan Request............ Off
Air Switch Solenoid............ Off
Air Divert Solenoid............ Off
High Battery Indicator......... Off
Shift Light.................... Off
Vehicle Anti-Theft System...... Pass
Learn Control.................. On
EGR Diagnostic Switch.......... Off
A/C Request.................... Off
A/C Clutch..................... Off

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TROUBLE CODE STATUS
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No current trouble codes present"

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The BLM values are too high and during driving they are changing between 108 and 148...
Injectors are the pink top ones from five-o with 22lbs.

Sounds like a vacuum leak somewhere. Can a worn out throttle body cause this? Is it possible that the motor is having mechanical problems?

Any help/idea is welcome.

firebirdjones

I was having a code 34 with mine also, although these computer controlled cars are new to me I can tell you what I tried and what fixed it.
I have a GM manual and it does mention in there that a dirty throttle body, misadjusted TPS and also a vacuum leak can cause the code 34. After checking all of this though, none of them got rid of the code 34 for me, I went through the diagnostic procedure several times over and finally in the end it just turned out to be the maf burn off relay.
Hopefully someone here will chime in and help with the chart you provided, it may reveal something, I am the wrong guy to ask about that. I need to get one of those things, looks like a ton of usefull info I could use in the future. Goodluck, Larry.

gta88 flamered

Larry, thanks for your reply.

What I've done during the last year:

- replaced MAF power and burn off relays
- replaced the multec injectors with the pink top ones from five-o
- PCV valve is new (Delco)
- O2 sensor is new (Delco)
- throttle body was disassembled and cleaned
- replaced spark plugs and cables with new Delco parts
- replaced ignition coil, ignition module and pick up coil with new Delco parts
- replaced EGR, EGR solenoid and EGR temp. switch with new parts
- replaced the vacuum hoses around the throttle body and the plenum
- replaced the ECM
- repinned the ECM connectors
- ground of the O2 sensor was put back on the right cylinder head
- checked fuel pressure during driving
- adjusted minimum air and tps voltage
- replaced MAF sensor...
- replaced charcoal cannister

I'm running out of ideas

firebirdjones

It looks like you have checked or changed about everything, gee wiz. This has been nagging you for a year? I am sorry to here that, guess my suggestions were of no help to you I was even going to add that the manual also mentions replacing the ecm for that code if everything else checks out but you have done that too already.
I hope you figure this out, and when you do please let me know or post back here, I am sure it will be very usefull information for the rest of us. Goodluck,,,,,, Larry