Truck still bogging down. Help. - Page 3 - Chevy Colorado & GMC Canyon

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Old 06-06-2008, 10:10 AM   #21 (permalink)
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Default Re: Truck still bogging down. Help.

Quote:
Originally Posted by rangerbob
Limp mode is on these trucks but it doesn't just happen sporadically. I'd recommend taking the bed off ( rather than dropping the tank ) and checking out the pump.
Easier and safer. Good Idea.

Maybe the filter sock is clogged up a little to prevent good fuel press at higher RPMs?
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Old 06-06-2008, 10:55 AM   #22 (permalink)
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Default Re: Truck still bogging down. Help.

here is a thought, don't redline you truck in each gear, and keep gas in it. and if you redline it each time you take off no wonder your having problems.

you mentioned having a hard time keeping speed going up hills? does it happen only gonig up hills?? if so all the gas is falling to the back and it is starving for fuel, same as going around a turn, if low enough it will all move to one side.
if you drive you truck stupid it will return the favor and act stupid
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Old 06-06-2008, 11:37 AM   #23 (permalink)
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Default Re: Truck still bogging down. Help.

Quote:
Originally Posted by ROBS
here is a thought, don't redline you truck in each gear, and keep gas in it. and if you redline it each time you take off no wonder your having problems.

you mentioned having a hard time keeping speed going up hills? does it happen only gonig up hills?? if so all the gas is falling to the back and it is starving for fuel, same as going around a turn, if low enough it will all move to one side.
if you drive you truck stupid it will return the favor and act stupid
Try reading more carefully next time.
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Old 06-06-2008, 12:02 PM   #24 (permalink)
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Default Re: Truck still bogging down. Help.

Quote:
Originally Posted by Tsalagi123
Ok, here it goes:

It all starts right between 1/2 and 1/4 tank. In this area whenever I got WOT (mostly in 1st gear) It's like hitting a wall around 5000 RPM. If I stay in it it will pick back up and finish the gear, shifting at redline like normal. From this point, the lower I get on gas, the more the problem becomes aparent. As I use gas and I approach the 1/4 tank mark it begins to hit this barrier around 4000 RPM and then again around 5000 RPM. If I keep my foot in it it will jerk back and forth (almost like slamming the clutch down in a manual under hard acceleration, except RPMs stay steady). As the tank gets emptier the truck will do it under 1/2 throttle or more and at lower and lower RPMs. This has gotten to the point where I have had trouble keeping a steady speed going uphill because when it downshifts it will fall on it's face.

Thanks for the help guys.
dude i can read, "WOT", and "shifting at redline like normal" keep more then a 1/4 tank of gas in it and drive like a civilized human being then you wouldn't have this problem simple as that

"have had trouble keeping a steady speed going uphill" if your low on gas go uphill and it wants to bog it could be starving for fuel, that's why i asked if you were having this problem only going up hills or around turns
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Old 06-06-2008, 12:17 PM   #25 (permalink)
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Default Re: Truck still bogging down. Help.

I am not regularly at WOT, or even near it. But when I do, I have problems and that is not good in an emergency. Like I said before, it has to do with load, RPM, and fuel level which is why going uphill becomes hard, it keeps going into passing gear.
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Old 06-06-2008, 09:12 PM   #26 (permalink)
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Default Re: Truck still bogging down. Help.

it sounds like a pump issue to me. lets think here, if the sock filter was at all the problem it would be pretty constant since its at the very bottom of the tank, nothing changes throughout the tanks range.

but, lets say if the pump has a hairline crack, or the little hose that connects the tube to the top of the module is leaking then you would be fine, since its submerged for the first however much of that tank. it would probably still have enough pressure to run fine during normal operation but when loaded probably doesnt keep up enough pressure.

its the ONLY thing i can think that wouldnt cause an IMMEDIATE check engine light, and cause the problem. pull the bed and the fuel pump module and take a look.
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Old 06-06-2008, 09:15 PM   #27 (permalink)
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Default Re: Truck still bogging down. Help.

Sounds logical.
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2005 Chevrolet Colorado Z-71 4x4
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Magnaflow Muffler
K&N Intake
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Front Valance removed.
New Tires
Cranked TB

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Conservatice Club #57 God Bless America!
Mud/Offroad CLub #23
[x] Keep it Flyin [x]
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Old 06-06-2008, 10:00 PM   #28 (permalink)
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Default Re: Truck still bogging down. Help.

Sound like a clogged fuel pickup. That or a hole in the pick up hose
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Old 06-07-2008, 07:46 AM   #29 (permalink)
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Default Re: Truck still bogging down. Help.

So ROBS if I understand you right, Your theory is to deal with the problem instead of finding and fixing the problem? You don't work for a dealer do you? I mean you sound like you would have been the person to have said people were abusing their truck when they started having valve and head problems too.
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Old 06-07-2008, 04:20 PM   #30 (permalink)
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Default Re: Truck still bogging down. Help.

Quote:
Originally Posted by The MailMan 2
So ROBS if I understand you right, Your theory is to deal with the problem instead of finding and fixing the problem? You don't work for a dealer do you? I mean you sound like you would have been the person to have said people were abusing their truck when they started having valve and head problems too.
x2
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2005 Chevrolet Colorado Z-71 4x4
3.5 I-5 3.73:1
Magnaflow Muffler
K&N Intake
Highbeam Kit from Mr. Taillight
Front Valance removed.
New Tires
Cranked TB

Gun Toting American Club Menber # 48
Conservatice Club #57 God Bless America!
Mud/Offroad CLub #23
[x] Keep it Flyin [x]
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