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06-28-2015, 01:28 AM
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#1 |
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Registered User
Join Date: Feb 2013
Location: Mill Creek Washington
Posts: 127
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reduced power mode
I just finished swapping an 06 L33 and 4L60E into my '64 and finally got to drive my truck, but when I hit the gas pedal, the truck goes into reduced power mode. It is fine when I have it in park or neutral, it idles perfect and rev's perfect, only when I am driving will the truck go into limp mode. The only codes I've gotten are P0650 and U0107. I replaced the throttle body, TPS and double checked all the wires and grounds. Figured the new throttle body and TPS would fix it, but doesn't seem to have an effect.
I recently changed tire sizes from 275/65/15 (which the computer was programmed to) to a 265/35/22 and haven't flashed the computer yet. Is it possible that the difference in OD in the tires is causing the problem? I was going to throw the old wheels and tires on to see, but they're in storage now and haven't been able to get them..... any thoughts would be appreciated, thanks! |
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06-28-2015, 03:14 AM
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#2 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: reduced power mode
The U0107 is the code for reduced power, so its telling you something you already know. Its something you'll see from low voltage (so make sure your not just running of Alt power). Also make sure you don't have damaged or pinched wires on the throttle pedal and Tac module. Make sure the plugs on the TAC unit are fully insterted and clicked in.
The other code is the MIL control circuit. I'm not super familiar with that code, but I believe its the circuit that runs the idiot light, and also goes to the gauges and BCM. If your not running the o.e gauges and BCM stuff, this shouldn't be causing your problem.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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06-28-2015, 05:11 AM
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#3 |
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It's alsways something.....
 
Join Date: Nov 2008
Location: Douglasville GA
Posts: 1,171
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Re: reduced power mode
What I do and suggest to others is you have LS wiring issues is to go over your harness with a "fine tooth comb"- in other words, disconnect and inspect every connection and:
check grounds double check grounds Its usually a ground issue on LS wiring complications IME
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1968 RS Camaro 'Vert Matching number 327 and M21 Muncie 1968 C10 Black with red interior and orig paint. 5.3 / 4l60e,3:73 POSI 17" Torq Thrusts 1968 CST 514 Red with black interior. Buddy Buckets, Factory A/C, PS, PB- 20" AR custom shop TT, 5.3 and 4l60e |
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06-28-2015, 08:55 AM
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#4 |
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Registered User
Join Date: Aug 2013
Location: Tecumseh
Posts: 355
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Re: reduced power mode
Are you certain you have the correct pedal for the file in the PCM?
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Current project 1959 Willys = GEZR TRUK Geezer is a Latin compound word made up of two roots. Gee meaning Urine Stain and Zer meaning your pants are open! FMCDH GBU and GBA http://www.youtube.com/user/aknovaman/videos |
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06-29-2015, 03:56 PM
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#5 |
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*************
Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,858
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Re: reduced power mode
Pedal and tach module have to match.
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
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07-01-2015, 07:28 PM
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#6 |
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Registered User
Join Date: Sep 2005
Location: sc
Posts: 1,203
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Re: reduced power mode
what's the 'cold air set up'? we had a GTO that would do this, after all the changes to the PCM/etc it would still do it. come to find out the blade was catching on the MAF/coupler, changed that up and all was fine! so look at that area.
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71 Cheyenne C10 LWB cam'd 6.0/T56 Swap |
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07-01-2015, 07:32 PM
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#7 |
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Registered User
Join Date: Aug 2013
Location: Tecumseh
Posts: 355
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Re: reduced power mode
Is the traction control input wire removed from the PCM? What ecu are you running, e40, e38 or p59?
__________________
Current project 1959 Willys = GEZR TRUK Geezer is a Latin compound word made up of two roots. Gee meaning Urine Stain and Zer meaning your pants are open! FMCDH GBU and GBA http://www.youtube.com/user/aknovaman/videos |
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07-09-2015, 03:35 PM
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#8 | ||
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Registered User
Join Date: Feb 2013
Location: Mill Creek Washington
Posts: 127
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Re: reduced power mode
Quote:
Quote:
thank you for the input! |
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07-09-2015, 03:37 PM
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#9 | |
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Registered User
Join Date: Feb 2013
Location: Mill Creek Washington
Posts: 127
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Re: reduced power mode
Quote:
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07-09-2015, 03:43 PM
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#10 | |
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Registered User
Join Date: Feb 2013
Location: Mill Creek Washington
Posts: 127
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Re: reduced power mode
Quote:
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07-13-2015, 10:31 PM
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#11 |
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Registered User
Join Date: Feb 2013
Location: Mill Creek Washington
Posts: 127
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Re: reduced power mode
I received and installed the re-tuned PCM from the vendor today and the problem is fixed! They had the wrong pedal on file like was suggested. I just want to thank everyone for responding and helping me get this figured out!
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07-14-2015, 12:28 AM
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#12 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: reduced power mode
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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