98 to 0411 pcm swap woes
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From: Summerville, SC
98 to 0411 pcm swap woes I applied the 3 bar software to it and it will turn over and fire for a second and die. It appears that the tach isn't responding correctly either. I finally got around to trying to getting it to run again and this happens. It's the same tune that I had in the 98 file. I have a 3 bar map as well.
I double then triple checked the wires and they are all still labeled for fear of something like this happening. I also had my dash out for my cage install and rewired my gauges that are in the cab.
I'm all ears.....
I double then triple checked the wires and they are all still labeled for fear of something like this happening. I also had my dash out for my cage install and rewired my gauges that are in the cab.
I'm all ears.....
I applied the 3 bar software to it and it will turn over and fire for a second and die. It appears that the tach isn't responding correctly either. I finally got around to trying to getting it to run again and this happens. It's the same tune that I had in the 98 file. I have a 3 bar map as well.
I double then triple checked the wires and they are all still labeled for fear of something like this happening. I also had my dash out for my cage install and rewired my gauges that are in the cab.
I'm all ears.....
I double then triple checked the wires and they are all still labeled for fear of something like this happening. I also had my dash out for my cage install and rewired my gauges that are in the cab.
I'm all ears.....
Not sure that I have much to add, but pretty certain the tune is not interchangeable between '98 and '99. I originally had a '98 computer and harness, but was advised to swap out to the '99 computer so that I could go with the HP Tuners 3 bar OS. After buying the newer computer, I paid a company to re-pin my '98 harness to be used with the '99 computer (they ARE different).
You might be aware of all of the above, but I don't understand your statement regarding apply the '98 3 bar to your '99 computer. If you have already had the '98 harness reworked, I might have a base tune 3 bar for your '99 computer. If you don't have the reworked harness yet, I might be able to help you out with that as well (I'm switching to Holley and selling off what I had).
Good Luck!
Scott
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From: Summerville, SC
There's a show all differences feature and the only difference now is the speedo. The 0411 has more tables than the 98, so the ones that are the same, are the same in the 0411 pcm.
Maybe recheck the connectors inside the car on the passenger side foot rest area. Did you unplug any of that stuff? I repinned my 98 harness and experienced a few issues and they all ended up being something being in the wrong pin cavity at the two pcm connectors or a connector i had unplugged and once I plugged the male and female ends together again one of the pin cavities might be stretched open not making a good contact for the male side.
Just check and recheck i thought i had and a buddy who was helping me found a couple wires off by one cavity at the pcm connectors
Just check and recheck i thought i had and a buddy who was helping me found a couple wires off by one cavity at the pcm connectors
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From: Summerville, SC
I did unplug all that stuff. I they went to the bcm and something else. I plugged them back together. Im not sure what it is though. Its a small black box that had its own holder. Did your car start and then die immediately as well?
The only thing i do know is that this blows.
The only thing i do know is that this blows.
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From: Summerville, SC
I have one extra plug that I'm assuming goes to TCS if installed. IIRC this same kind of **** happened to me when I originally swapped to a 2 bar setup. I had the 2 bar tune in and a 1 bar map and it wouldn't stay running. I knew that was the problem at the time.
What should the 3 bar read with koeo? Do you have to swap over to a different ect sensor for the swap? I'm at a loss here.
What should the 3 bar read with koeo? Do you have to swap over to a different ect sensor for the swap? I'm at a loss here.
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From: Barto PA
I didn't install the 3 bar but did do the 98 to 0411 PCM. At first it didn't work had to relink vats a few times before it took. Maybe try just a normal tune from 98 to 99+ file and see if that works.
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With KOEO the map reads 72.1kpa. I have 3 codes that I have no idea what the last two are.
P0452: Fuel Tank Pressure Sensor Circuit Low Voltage
P0748: Pressure Control Solenoid Circuit Electrical
P1637: Generator L-Terminal Circuit
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From: Barto PA
Tire Smoking Tranny Blowing Director
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From: Barto PA
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From: Summerville, SC
Anyone have a problem with the 98 tach actually working after the swap? Mine doesn't move at all. I have a RPM signal that is logged by hp tuners, so what gives?
Glad you got the car running. Only tach related thing I could come up with for that swap was in this thread. Might give it a shot. 
https://ls1tech.com/forums/pcm-diagnostics-tuning/1624673-99-pcm-swap-tachometer-issue.html
https://ls1tech.com/forums/pcm-diagnostics-tuning/1624673-99-pcm-swap-tachometer-issue.html
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From: Summerville, SC
Glad you got the car running. Only tach related thing I could come up with for that swap was in this thread. Might give it a shot.
https://ls1tech.com/forums/showthread.php?t=1624673
https://ls1tech.com/forums/showthread.php?t=1624673