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#1
11-05-2006, 07:15 PM
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Moments of losing power when cold
Ok Ive been trying to figure this problem out for awhile now. It seems like my issue only happens when my truck is semi-cold. When I give it gas it seems like my truck loses power from the engine for a second or two. I'll be pumping the gas and it doesnt respond then it kicks in and my truck drives fine. I've had the tranny, rear dif, and transfer case checked and their both cherry. I replaced my mass airflow sensor and it still doing it. It only happens once or twice and week and my truck isnt throwing a single code. Anyone had anything like this happen to them before?
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  99 Silverado z71 LT 6" tough country lift, 35" cooper discoverer tires with 18" amp flathead rims, K&N series 77 cool air intake 
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#3
11-05-2006, 08:33 PM
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Re: Moments of losing power when cold
Quote:
Yeah I did. I removed the K&N and replaced the MAF.
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99 Silverado z71 LT 6" tough country lift, 35" cooper discoverer tires with 18" amp flathead rims, K&N series 77 cool air intake
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#4
11-07-2006, 01:32 PM
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Re: Moments of losing power when cold
I would get something like that, but typically it is the tranny stuck in high gear. And it will not throw out any codes.. It doesn't happen all the time, but have noticed it on more than one occasion.
When was the last time you did a tranny flush?
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  2000 Silverado Z71, 5.3L, K&N GenII Air Intake, Y-pipe Exhaust (no muffler), Bosch Platnium +4 plugs, 242k miles and still running.
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#5
11-10-2006, 04:25 PM
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Re: Moments of losing power when cold
The same was happening to my truck. Only once and awhile - on cold mornings. A vey slight dead spot in the throttle.
I was also throwing a maf code, and I do have the K & N set up. Cleaned the filter, used very little oil and cleaned the maf with TB cleaner and sprayed with electrical contac cleaner. So far so good. Did this last winter.
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2002 Silverado 2500HD Crew Cab, Full Box 8.1 K & N Intake Pioneer DEH960MP w/ Pheonix Gold Octane 5/4 Amp Polk momo6500 Front Polk momo 650 Rear Bulldog Auto Start
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#6
11-12-2006, 12:01 AM
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Re: Moments of losing power when cold
Yeah mines not throwing any codes thats why its leading me to believe more and more it has to do with getting gas supplied to the engine. I took off the K&N and put in a new MAF...still doing it..its really weird..
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99 Silverado z71 LT 6" tough country lift, 35" cooper discoverer tires with 18" amp flathead rims, K&N series 77 cool air intake
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#7
11-12-2006, 10:36 AM
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Re: Moments of losing power when cold
Throttle Position Sensor (TPS)??
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57 Chevy 210 65 Olds 442 Convertible (Another one sold) 75 GMC Vandura 3/4 Ton 1999 K2500 Old Body Style Suburban (Gone but not forgotten) 05 Dodge Ram 3500/5.9 Cummins 2012 Toyota FJ Cruiser
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#8
11-12-2006, 10:35 PM
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Re: Moments of losing power when cold
Ill try..its a cheap fix. Also my engine has stalled on me a few times when i first start it up. I try to give it a little gas and i hear a popping sound coming from the Air Filter box and the engine almost seems like its choking itself down..anyone heard of anything about engines incorrectly choking themselves?
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99 Silverado z71 LT 6" tough country lift, 35" cooper discoverer tires with 18" amp flathead rims, K&N series 77 cool air intake
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#9
11-13-2006, 10:36 AM
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Re: Moments of losing power when cold
Another thing you might try is rebooting the VCM. Remove the neg battery cable for 30-45 mins. Just throwing stuff out there..........Steve
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57 Chevy 210 65 Olds 442 Convertible (Another one sold) 75 GMC Vandura 3/4 Ton 1999 K2500 Old Body Style Suburban (Gone but not forgotten) 05 Dodge Ram 3500/5.9 Cummins 2012 Toyota FJ Cruiser
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