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Ls swap dbw issues

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Old Mar 15, 2023 | 08:17 PM
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Alexcamp11's Avatar
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Ls swap dbw issues

I was hoping someone would be able to help me out. I swapped a 09 6.0 into my camaro and during regular driving or anything under wot i dont have any issues. But once i try to got wot and hit 4k it cuts out and i lose all throttle response until i shut it off and restart it. Has anyone ever run into this issue before. If so any information on what could solve it?
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Old Mar 15, 2023 | 08:32 PM
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: Ls swap dbw issues

Originally Posted by Alexcamp11
I was hoping someone would be able to help me out. I swapped a 09 6.0 into my camaro and during regular driving or anything under wot i dont have any issues. But once i try to got wot and hit 4k it cuts out and i lose all throttle response until i shut it off and restart it. Has anyone ever run into this issue before. If so any information on what could solve it?
Need more info.

​Which throttle body are you running? What is your ignition and fuel setup? What DBW pedal are you using? What mods do you have? Are you running a VVT/AFM equipped motor?
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Old Mar 15, 2023 | 09:49 PM
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Re: Ls swap dbw issues

Originally Posted by ShiftyCapone
Need more info.

​Which throttle body are you running? What is your ignition and fuel setup? What DBW pedal are you using? What mods do you have? Are you running a VVT/AFM equipped motor?
stock throttle body, stock fuel inj and ign coils through the stock e38 ecm. Pedal is out of an 07 truck that had the same pedal as the 09. It is a vvt engine. Havent done any internal mods yet. Ran low on money and just decided i wanted to drive it the way it was
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Old Mar 15, 2023 | 09:50 PM
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: Ls swap dbw issues

Originally Posted by Alexcamp11
stock throttle body, stock fuel inj and ign coils through the stock e38 ecm. Pedal is out of an 07 truck that had the same pedal as the 09. It is a vvt engine. Havent done any internal mods yet. Ran low on money and just decided i wanted to drive it the way it was
What fuel pump are you running?
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Old Mar 16, 2023 | 06:32 AM
  #5  
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Re: Ls swap dbw issues

Aftermarket 300 lph
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Old Mar 16, 2023 | 07:38 AM
  #6  
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: Ls swap dbw issues

Are you sure you are getting enough fuel? Did you beef up the wiring for that fuel pump? The stock wiring can't really support anything larger than a 255lph pump, reliably anyways.
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Old Mar 16, 2023 | 08:28 AM
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Ls swap dbw issues

Start by viewing the diagnostic codes present in the ECM.
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Old Mar 16, 2023 | 10:52 AM
  #8  
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Car: 1991 camaro convertible
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Axle/Gears: Ford 8.8 3.31 torsen t2r
Re: Ls swap dbw issues

It sounds like you are setting a throttle pedal or throttle body code . Start with scanning for codes . My swap would set a PO 2138 code and the throttle would shut down until I restarted or cleared the code . Mine was related to an after market cruise control that had the wrong wiring instructions . When my escalde did it it was a failed throttle body . but they were different codes. The pedal sends 2 separate outputs to the PCM and if there is to much differance between them the PCM shuts down the pedal to prevent unentended acceleration.
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Old Mar 16, 2023 | 12:09 PM
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Re: Ls swap dbw issues

Yes i did rewire it, and never have a problem with volume or pressure. I will check codes when i get home
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