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*reduced engine power* please help

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Old Oct 31, 2014 | 10:44 AM
  #1  
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St. Jude Donor '14-'15
Default *reduced engine power* please help

Okay so when I leave my key in the "on" position for more than like 10 seconds and then start my car I get the reduced engine power message and CEL light. But if I start it within like 3 seconds of putting the key in I dont. All I have to do to make it go away is reset the codes every time. And start it within 3 or so seconds and it's fine.

Anyone ever had this issue before?
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Old Oct 31, 2014 | 11:00 AM
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What codes pop up?
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Old Oct 31, 2014 | 11:10 AM
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Common issue. Search the forums plenty of posts about it. Cleaning the ground points fixed my randomish reduced engine power
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Old Nov 2, 2014 | 06:53 PM
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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
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Originally Posted by wardamncorvette
Okay so when I leave my key in the "on" position for more than like 10 seconds and then start my car I get the reduced engine power message and CEL light. But if I start it within like 3 seconds of putting the key in I dont. All I have to do to make it go away is reset the codes every time. And start it within 3 or so seconds and it's fine.

Anyone ever had this issue before?
Do it again and let us know what the codes are?

Then we can help a lot better!

Thanks,Matt
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Old Nov 5, 2014 | 11:19 PM
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10-pcm 1571 h
28-TCS c1225 h
28- tcs c1232 h c
28-tcs c1286 h c
38-rtd no comm.
40-bcm b0502 h c
40-bcm b0507 h c
40-bcm b2482 h c
80-radio u1016 h
A6-scm no comm.
B0-rfa c2120 h c
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Old Nov 5, 2014 | 11:19 PM
  #6  
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St. Jude Donor '14-'15
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Sorry for the delay
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Old Nov 6, 2014 | 03:13 PM
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Forgot to say that I do have 2 lights on my dash on that have been on since I got the car... Abs and traction control
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Old Nov 7, 2014 | 11:15 AM
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Originally Posted by wardamncorvette
Forgot to say that I do have 2 lights on my dash on that have been on since I got the car... Abs and traction control
28- tcs c1232 h c is a good place to begin. I leave you to look it up here or on Google.
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Old Nov 7, 2014 | 02:40 PM
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I just had the something very similar to my `03AE.

In my case, the solution was super simple.

Even though the page is not of this forum, here's a link to what you want to check. (door harness short)

http://ls1tech.com/forums/corvette-p...lp-please.html

Before doing this, I followed everyone's advice to replace the battery, but that did no good and the problem reoccurred a few days after buying a Optima Yellow-top battery.

After the problem resurfaced, I pulled the wiring harness out of the driver's door and mine looked just like the pics on this page. I wrapped a layer of electrical tape around the exposed wire, and the problem was solved.

Last edited by DanSavage; Nov 7, 2014 at 02:43 PM.
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Old Nov 7, 2014 | 06:15 PM
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Originally Posted by DanSavage
I just had the something very similar to my `03AE.

In my case, the solution was super simple.

Even though the page is not of this forum, here's a link to what you want to check. (door harness short)

http://ls1tech.com/forums/corvette-p...lp-please.html

Before doing this, I followed everyone's advice to replace the battery, but that did no good and the problem reoccurred a few days after buying a Optima Yellow-top battery.

After the problem resurfaced, I pulled the wiring harness out of the driver's door and mine looked just like the pics on this page. I wrapped a layer of electrical tape around the exposed wire, and the problem was solved.


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Old Nov 8, 2014 | 10:36 AM
  #11  
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You're welcome. Let us know whether the door wiring was the problem. FWIW, my problem surfaced just a couple of weeks ago and I fixed it last Saturday.

Today, I'm planning to pull the passenger side door harness to check whether it has exposed wires and if so, I'll add some tape to insulate it.

Also, one of the strongest symptoms was that when this would happen, my driver's side control panel stopped working. None of the switches would work. For example, when this was going on, I could not roll down the passenger side window from the driver's control panel, but I could roll it down from the passenger control panel.

Also, my Window Valet acted funky. When I tried to roll up the windows using the fob, the driver's side would not go up, and the passenger side would only go up a few inches at a time until it reached the end of the travel, then the window valet kept trying to roll up the window.
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