So I datalogged my car and I don't think things are ok
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Joined: Feb 2004
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
So I datalogged my car and I don't think things are ok
I used TTS Datamaster for my car, the 8D version.
When I started it it kept plinging every second or so saying data error(Engine Data Checksum Error) and sometimes it says DTC error.
And there are all these spikes, I don't think this is normal but I am not really sure what to look for or how to diagnose this, anyone care to help? I have an 8 minute log here that anyone can look at if they wish.
Here's a screenshot to show you what it looks like:
Here is the datalog(zipped at 146kb):
http://www.robothobos.com/misc/testing.zip
When I started it it kept plinging every second or so saying data error(Engine Data Checksum Error) and sometimes it says DTC error.
And there are all these spikes, I don't think this is normal but I am not really sure what to look for or how to diagnose this, anyone care to help? I have an 8 minute log here that anyone can look at if they wish.
Here's a screenshot to show you what it looks like:
Here is the datalog(zipped at 146kb):
http://www.robothobos.com/misc/testing.zip
Last edited by HisDivineShadow; Jul 12, 2005 at 02:31 PM.
Thread Starter
Member
Joined: Feb 2004
Posts: 368
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
I have talked with another guy and he wonders if I might have a intake leak since the fuel mixture varies alot and wildly sometimes.
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Member
Joined: Feb 2004
Posts: 368
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
Re: So I datalogged my car and I don't think things are ok
Here are some of the DTC Error codes I got:
Code:
160 secs - Err33 EGR System Fault 167 secs - Err22 TPS Low 169 secs - Err22 TPS Low 171 secs - Err52 Oil Temp Low 173 secs - Err62 Oil Temp High 174 secs - Err62 Oil Temp High 179 secs - Err12 No DRP Pulses 181 secs - Err46 Fuel Enable(VATS) Fail 566 secs - Err22 TPS Low 569 secs - Err15 Cool Temp Low 575 secs - Err43 ESC Failure 575 secs - Err23 MAT Low 585 secs - Err53 System Overvoltage (14,0 volts) 590 secs - Err21 TPS High 591 secs - Err24 Output Speed Low 594 secs - Err21 TPS High 594 secs - Err33 EGR System Fault 598 secs - Err33 EGR System Fault 599 secs - Err12 No DRP Pulses 599 secs - Err24 Output Speed Low 603 secs - Err15 Cool Temp Low 606 secs - Err23 MAT Low 607 secs - Err44 O2 Lean 613 secs - Err33 EGR System Fault
Thread Starter
Member
Joined: Feb 2004
Posts: 368
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
I have gone through the error codes in the log, they all have various potentialproblems but all of them except some I could not find have the ECM being faulty as one possibility.
But then I also found I had gotten an error 51:
"EPROM/Flash Checksum Fail"
It is definitly my ECM that is broken.
But... do I need a new chip or do I need a whole new unit?
But then I also found I had gotten an error 51:
"EPROM/Flash Checksum Fail"
It is definitly my ECM that is broken.
But... do I need a new chip or do I need a whole new unit?
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Joined: Nov 2001
Posts: 333
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From: albuquerque
Car: 1992 Z28
Engine: 350 L98 w/ D-1SC
Transmission: POS 700-R4
According to Haynes repair it could be...
defective PROM, PROM not properly installed, incorrect PROM installed, defective ECM.
Id swap in a new prom before an ECM. Ive heard of bad prom burns that have caused this error code. Reburn the prom if you have the equipment see if that fixes it. If not id try replacing the prom first.
defective PROM, PROM not properly installed, incorrect PROM installed, defective ECM.
Id swap in a new prom before an ECM. Ive heard of bad prom burns that have caused this error code. Reburn the prom if you have the equipment see if that fixes it. If not id try replacing the prom first.
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Joined: Feb 2004
Posts: 368
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
Originally posted by CRZYTRN-92Z28
Id swap in a new prom before an ECM. Ive heard of bad prom burns that have caused this error code. Reburn the prom if you have the equipment see if that fixes it. If not id try replacing the prom first.
Id swap in a new prom before an ECM. Ive heard of bad prom burns that have caused this error code. Reburn the prom if you have the equipment see if that fixes it. If not id try replacing the prom first.
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Joined: Feb 2004
Posts: 368
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
Well I haven't gotten the new stuff from Moates yet though according to the tracking it should arrive tomorrow.
However I'll be leaving tonight for 10 days so damn
I did build a duplicate of the interface and it worked in the exact same fashion.
However I'll be leaving tonight for 10 days so damn
I did build a duplicate of the interface and it worked in the exact same fashion.
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