Gen V L83 No Throttle Response
Thread Starter
Staging Lane
Joined: Jan 2017
Posts: 97
Likes: 3
Gen V L83 No Throttle Response I recently completed an L83 swap, which included an engine, transmission, ecu, and MAF all from the same donor vehicle. Was told it was a 2014 but computer shows 2015. it has the 6 speed 6l80e.
Engine starts, runs smooth, and when I hoop up VCM scanner it shows the throttle position correctly as I push the accelerator. however, the engine is completely unresponsive regardless of what gear, park / neutral, etc. not even a blip.
I am running a standalone fuel system set to 74 PSI, not the factory PWM. I have a code P018c Fuel Pressure Sensor B Circuit Low; and P0192 Fuel Rail Pressure Sensor A Circuit Low. Could this be an issue? how do I combat this limp mode?
Engine starts, runs smooth, and when I hoop up VCM scanner it shows the throttle position correctly as I push the accelerator. however, the engine is completely unresponsive regardless of what gear, park / neutral, etc. not even a blip.
I am running a standalone fuel system set to 74 PSI, not the factory PWM. I have a code P018c Fuel Pressure Sensor B Circuit Low; and P0192 Fuel Rail Pressure Sensor A Circuit Low. Could this be an issue? how do I combat this limp mode?
Wrong throttle pedal. U need to change 2 wires around wether its a corvette or truck pedal. Had same issue on a c10 l83 swap. Throttle wouldnt do anything. Call speartech they can tell u what 2 wires to swap.
Thread Starter
Staging Lane
Joined: Jan 2017
Posts: 97
Likes: 3
Still need some help on this please
I tried a GM throttle pedal out of the matching vehicle and same issue, no change..
Here are my DTCs
0x7E8: P0073 - Ambient Air Temperature Sensor Circuit High (Permanent)
0x7E8: P0151 - O2 Circuit Low Voltage (Bank 2, Sensor 1) (Permanent)
0x7E8: P057C - Brake Pedal Position Sensor Circuit Low (Permanent)
0x7E8: P2138 (Permanent) Throttle / Pedal Position Sensor D/E Correlation
Any thoughts?
I've tried calling and emailing speartech with no luck. they must be busy or out all week
I tried a GM throttle pedal out of the matching vehicle and same issue, no change..
Here are my DTCs
0x7E8: P0073 - Ambient Air Temperature Sensor Circuit High (Permanent)
0x7E8: P0151 - O2 Circuit Low Voltage (Bank 2, Sensor 1) (Permanent)
0x7E8: P057C - Brake Pedal Position Sensor Circuit Low (Permanent)
0x7E8: P2138 (Permanent) Throttle / Pedal Position Sensor D/E Correlation
Any thoughts?
I've tried calling and emailing speartech with no luck. they must be busy or out all week
Are u sure thats the original throttle pedal for the setup? Did u order a custom harness? Had same issue and swapped 2 wired problem solved. I got a thread on it in the genV section. States what 2 wires to swap.
We ordered a harness from speartech and they had it wired for a corvette pedal when we had a truck pedal
We ordered a harness from speartech and they had it wired for a corvette pedal when we had a truck pedal
Thread Starter
Staging Lane
Joined: Jan 2017
Posts: 97
Likes: 3
Looks like I had two of the gas pedal wires mixed up when I wired in the gas pedal harness. Oddly enough the computer was still reading the position but I fixed the two wires and now it responds to the gas pedal. This was my mistake, and a little bit of tracing wires fixed it! thanks for the response.
Trending Topics
Teching In
Joined: Aug 2017
Posts: 2
Likes: 0
Reviving this thread, I have an L83 in my Scout II and I keep throwing the same codes. My biggest issue is there's turnover but no spark. Was the fuel pressure killing your engine when you were running it? Would it start slow?
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Teching In
Joined: Aug 2017
Posts: 2
Likes: 0
Gotcha. I swapped two wires after talking to Current Performance, and that fixed the pedal Error. The engine will turn, but there's no crank and it keeps throwing the P0192. My fuel tank and pump seem to be working fine... I'm stumped.
Teching In
Joined: Nov 2020
Posts: 1
Likes: 0
No throttle Looks like I had two of the gas pedal wires mixed up when I wired in the gas pedal harness. Oddly enough the computer was still reading the position but I fixed the two wires and now it responds to the gas pedal. This was my mistake, and a little bit of tracing wires fixed it! thanks for the response.
