good catch
REDUCED ENGINE POWER. Read below and please help me understand this.
- Thread starter stretchit
- Start date
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Nothing has fixed the issue yet. Going to wire my own, pedal sensor to TAC module, harness and see what that does.
Tested can bus and the radio had no voltage with makes sense cause no radio is installed.
The other test came up faulty was the ABS but maybe no voltage cause it's not on? Idk. Had to buy a new rebuilt one cause I broke the orginial trying to update it.....
Regardless the ABS is unplugged and I still have the same issue. No throttle response. Ohm all the wires, wires are fine. Getting close to calling it.
Will post another update if discoveries are made. Wish me luck!
Tested can bus and the radio had no voltage with makes sense cause no radio is installed.
The other test came up faulty was the ABS but maybe no voltage cause it's not on? Idk. Had to buy a new rebuilt one cause I broke the orginial trying to update it.....
Regardless the ABS is unplugged and I still have the same issue. No throttle response. Ohm all the wires, wires are fine. Getting close to calling it.
Will post another update if discoveries are made. Wish me luck!
New pedal sensor to TAC module harness.... still throwing same codes with no throttle response. Going to check wires for the 9th time and I'm done trying.
Found out I'm missing a ambient temp sensor next to condenser so I'm buying another one. Traced one ground that led to two grounds that hook into ambient temp sensor amd the condenser. I borrowed the front ambient temp sensor and plugged it it. Still the same codes.
I will post update when Install the remaining temp sensor.
Anyone know somebody I can call to help me with this issue? Convinced I have the worst case REDUCED ENGINE POWER
Picture below is showing how extreme I'm going and have been going. Have to double check wires going into truck. Rain is killing me right now
Found out I'm missing a ambient temp sensor next to condenser so I'm buying another one. Traced one ground that led to two grounds that hook into ambient temp sensor amd the condenser. I borrowed the front ambient temp sensor and plugged it it. Still the same codes.
I will post update when Install the remaining temp sensor.
Anyone know somebody I can call to help me with this issue? Convinced I have the worst case REDUCED ENGINE POWER
Picture below is showing how extreme I'm going and have been going. Have to double check wires going into truck. Rain is killing me right now
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strutaeng
Full Access Member
Have you tried backprobbing directly at the ECU and using new, temporary wires to the TAC and throttle body connectors? Inspect the ECU connectors as well, if you haven't already, maybe a pin or two got bent out of wack?
Sorry, I haven't read the entire thread, so maybe you already did this...
Sorry, I haven't read the entire thread, so maybe you already did this...
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@strutaeng Thanks for the reply. I traced every wire to the ending point, fuse box, Tac wire, and i only visually inspected the 4 wires going into the truck. Every wire has an electrical path. I realized my solder job was awful. I will post some updates after correcting.
I didnt check the two wires going to the PCM from the TAC wire, figured it was fine but will check too.
I didnt check the two wires going to the PCM from the TAC wire, figured it was fine but will check too.
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Tahoe14
Full Access Member
Should be several YouTube’s on soldering.
Well... all wires have been properly soldered. Grounds are absolutely perfect. Ohm the wires from the TAC module harness to PCM. Nothing is working per usual. Same codes pop up.
When checking the inside of the instrument fuse panel, I noticed the fuse pictured does not light up for me when the vehicle is in the on position. I don't know anyone who has this vehicle or I would test it to see if it lights up. Can anyone confirm that it's suppose to light up when in the on position. Light up like probe it.
*apparently when updating to LED its common for the Flasher relay to go bad. I am going to buy a LED flasher relay to replace the stock flasher. THIS IS HOPEFULLY MY PROBLEM
Forgot to test it when I ran the vehicle last cause it ran like dog shit and died.
When checking the inside of the instrument fuse panel, I noticed the fuse pictured does not light up for me when the vehicle is in the on position. I don't know anyone who has this vehicle or I would test it to see if it lights up. Can anyone confirm that it's suppose to light up when in the on position. Light up like probe it.
*apparently when updating to LED its common for the Flasher relay to go bad. I am going to buy a LED flasher relay to replace the stock flasher. THIS IS HOPEFULLY MY PROBLEM
Forgot to test it when I ran the vehicle last cause it ran like dog shit and died.
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FIXED.
After unplugging my rear HVAC module. I seem to have gotten rid of the "reduced engine power" message and have full connection to the throttle. I am getting an oscilloscope tomorrow to test by serial bus. Crazy how these modules cause interference like that. I am going to test it like a MOFO and post a update. Hopefully I can keep the connection.
After unplugging my rear HVAC module. I seem to have gotten rid of the "reduced engine power" message and have full connection to the throttle. I am getting an oscilloscope tomorrow to test by serial bus. Crazy how these modules cause interference like that. I am going to test it like a MOFO and post a update. Hopefully I can keep the connection.
