Reduced power - Chevy Colorado & GMC Canyon

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Old 08-29-2012, 12:16 AM   #1 (permalink)
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Default Reduced power

I have a 2004 4 cylinder Colorado. My check engine light came on and the words "reduced power" came on. Can anyone tell me what is wrong.
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Old 08-29-2012, 08:08 AM   #2 (permalink)
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Bad battery or bad MAF or MAP connection/signal. Replace the MAP, clean the MAF with MAF cleaner. Try the MAF first, then MAP, then battery.

Like I said, the QD connections could just be dirty, too.
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Old 08-29-2012, 12:16 PM   #3 (permalink)
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Reduced Power A/C related??
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Old 08-29-2012, 11:38 PM   #4 (permalink)
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Not sure if it's the same but my 09 silverado did this the other day and would not go over like 15mph with it to the floor. Ended up that my intake tube came off of my throttle body. So my suggestion would be that it is itake related, So clean MAF, and check for leaks.
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Old 08-30-2012, 05:22 AM   #5 (permalink)
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I had this exact same issue. All i did was clean the MAF sensor and the throttle body. I also check the wiring for the throttle body to make sure it was all connected. "Reduced power" has not come back since.
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Old 08-30-2012, 05:48 AM   #6 (permalink)
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Quote:
Originally Posted by 08Canyon View Post
Well when it happened to me, what would happen was at Wide Open Throttle my truck would just shut down on me and I would coast till I came to a dead stop. I then tried to take off normally but it would only go up to 15mph tops (as mentioned aboved by another member). I would have to turn my truck off for a couple of minutes and it once I turned it back on it would be normal. I did my research and came to the conclusion that my throttle body needed to be cleaned. But i still did all the extras like MAF sensor, check the wiring, etc. Ever since that day it hasn't happened at all. Truck runs perfectly now.
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Old 08-30-2012, 02:53 PM   #7 (permalink)
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Quote:
Originally Posted by redflashZQ8 View Post
Well when it happened to me, what would happen was at Wide Open Throttle my truck would just shut down on me and I would coast till I came to a dead stop. I then tried to take off normally but it would only go up to 15mph tops (as mentioned aboved by another member). I would have to turn my truck off for a couple of minutes and it once I turned it back on it would be normal. I did my research and came to the conclusion that my throttle body needed to be cleaned. But i still did all the extras like MAF sensor, check the wiring, etc. Ever since that day it hasn't happened at all. Truck runs perfectly now.
It's amazing how a bit of internal air induction cleaning affects these trucks. I'm making it a habit that after every oil change the MAF is sprayed clean and what ever build up that's in the TB gets removed.
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Old 08-30-2012, 03:10 PM   #8 (permalink)
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Quote:
Originally Posted by The Godfather View Post
It's amazing how a bit of internal air induction cleaning affects these trucks. I'm making it a habit that after every oil change the MAF is sprayed clean and what ever build up that's in the TB gets removed.
I know right? Lol yea I've become a lil paranoid about it and do the same after oil changes.
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