Reduced power mode, codes P0017, P0068, P0102

Tiny
BLAKE BUSEMAN
  • MEMBER
  • 2005 CHEVROLET COLORADO
  • 2.8L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 220,000 MILES
Rough idle then truck goes into reduced power mode at idle and throws P0068, P0017 and P0102 codes.

I have replaced throttle body with sensors, gas pedal with sensors and MAF.
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Sunday, January 21st, 2018 AT 9:50 AM

9 Replies

Tiny
KEN
  • ADMIN
Hey,

Bummer, the first code is the problem. Can I ask if the oil has been changed recently?

Please let us know.

Cheers, Ken
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Monday, January 22nd, 2018 AT 7:34 PM
Tiny
BLAKE BUSEMAN
  • MEMBER
That's what I was thinking. Yeah I change my oil every three to four thousand miles. Id rather change it early. I just changed it a few days before it went to crap.
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Monday, January 22nd, 2018 AT 8:47 PM
Tiny
KEN
  • ADMIN
Hmm. Is the engine making noise like a timing chain guide has let go? Can you take a quick video of the engine running and upload it here? That way we can say for sure the timing chain/camshaft actuators need to be replaced. I can give you diagrams on how to do the work if this is the problem which I think it is.
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Tuesday, January 23rd, 2018 AT 10:02 AM
Tiny
BLAKE BUSEMAN
  • MEMBER
Here is a video it was making a noise kind of like a diesel engine maybe a chain slap or something before at idle but drove fine changed oil and it doesn't have that sound really anymore but rought idle and those codes. Ive heard it might be the vvt actuator
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Tuesday, January 23rd, 2018 AT 4:37 PM
Tiny
KEN
  • ADMIN
Nice work on the videos. It sounds like the engine has no oil pressure. Is the oil light on? Also what weight and brand oil did you use?

If everything checks out the engine will need to come apart to check the timing chains and camshaft actuators.

Here is a guide on how the actuator work

https://www.2carpros.com/articles/how-camshaft-variable-valve-timing-works

There are balance shaft guides and chains that go out in the rear of the engine as well. Can you tell if the noise is coming from the rear or the front of the engine it is tough to tell by the videos, sounds like front.

Here are diagrams to help you see how to do the job.

Check out the diagrams (Below)

Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken
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Wednesday, January 24th, 2018 AT 10:55 AM
Tiny
BLAKE BUSEMAN
  • MEMBER
From what I can tell its coming from the front. I use 5w30 quaker state. The oil light isn't on. Any idea how much this would cost if I didn't do it myself?
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Wednesday, January 24th, 2018 AT 11:35 AM
Tiny
KEN
  • ADMIN
It should run about $1200.00 for the front timing chain depending on what they find when they get in there. Please let me know and get pictures of the broken parts. Be sweet for the thread
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Wednesday, January 24th, 2018 AT 12:02 PM
Tiny
WATERSKIER
  • MEMBER
  • 2006 CHEVROLET COLORADO
Engine Mechanical problem 4 cyl Two Wheel Drive Manual 33500 miles

when starting truck this morning, it started but ran "rough" with some shaking vibrating going on. Also the engine light come on. Warmed up with it running rough but when I went to go. It would barely move, pedal totally to the floor. It would not go. Then it started to flash on dash "Reduced Power". Would not even pull itself out of driveway wish is like a 5 degree incline.
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Wednesday, January 24th, 2018 AT 2:24 PM (Merged)
Tiny
BLAKE BUSEMAN
  • MEMBER
Did you ever get that fixed? I'm having the same problem wondering what your problem was
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Wednesday, January 24th, 2018 AT 2:24 PM (Merged)

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