Does it often have a hard time starting, or only after you fuel it.

Does it do it only after you fill the tank, or at any time you stop for gas? When you fill it do you squeeze every last penny that will fit?

 

^^good questions, answers will help

 

only after I fuel it , I have filled it full ( never to the last cent) and to 3/4 and it still does it. I replaced the fuel pump last week because it rotted out and had hopped that that would have cured it but nadda

 

Fuel pump "rotted out"?

Wtf?

I have 225k on mine with 10 winters and 0 issues....

 

The feed and return connections were pretty much gone , i had to have it towed last week., pulled the box off and swapped it . We use allot of salt on the roads up here, brine and calcium , it fucking eats trucks!

 

My first thought would be venting. Perhaps the filling is splashing into the vent and causing idle issues until it clears. Only because it's evident even if you have not over-filled it, but only after fueling.

 

I will search some vent threads on that...thanks .

 

What DTC codes are showing?

 

No idea, I will get a reader on to it next weekend and see

 

I am gonna pull the throttle body today ( if it warms up , damn cold ) Can i just bolt it back on hand tight or do I have to borrow a torque wrench and get it to 89lbs?

 

Mine does this, only after I fill it up with gas. Any other time it starts up perfectly, but if I fill it up and go to start it, it lags and takes about 3-4 seconds to start and when it does, for the first few seconds the RPMs want to bottom out so I have to give it a little gas to keep from doing that.

I have no idea what it is, my truck is in great shape. I thought maybe it the fuel filter needs cleaning, but I'm a partial dumbass on some things.

 

Is yours the 3.7? Do you experience the ruff idle to when getting off the pedal?

 

Mine did the same thing. I had to replace the purge valve solenoid on the driver side of the engine.

 

Hey Okie50, the same thing at fill up? Did this also affect your idle when getting off the fuel and on to the brake? Did it cure both?

 

The 4 tiny throttle body bolts do no require 89ftlbs of torque. You'll snap them all off if you try tightening them that much.

There is an o-ring seal. I use a criss-cross pattern to torque it in 2 or 3 stages and make it common sense snug. I don't actually know the value or maybe I would bust out my torque wrench.

When you clean it, be sure to use the proper cleaner. And lint free rags, such as a shop towel. Do not scrape it clean with any tools. That will score the throat and cause bigger problems. It's pretty simple to clean, but may take a 2nd application after wiping away the gunk the first time.

 

Thanks, i was sure i read 89lbs on here somewhere....its still too cold out today to tackle it so it might have to wait a few days...I swear I will never own a house without a garage again, working outside suks.

 

Did you ever fix the problem? My 2007 Colorado has done the same thing since I bought it, have yet to find the problem.

 

I would change the fuel filter in it for sure. And the # 89 might have been inch pounds

 

I fixed it by selling it and buying a Tacoma

 

Ha...thanks for making me almost spit coffee all over my laptop - good response!

 

Hey Guys,
My 2005 Colorado starts running rough at a Red Light.
Second time doing this, when I fill my Gas Tank to Full...
I use Premium Gas most of the time.
Any help you can provide?
Oh, My engine light did light up this second time.
First time it did not.

Thanks,
Keith

 

Might be a good idea to pull the check engine light code and report back. Many auto parts stores will pull codes for free.

Edit: Wow, this is reviving an old thread.

 

OK... I will try and go at Lunch today.

Well, I did a Search on Google, landed here.
I figure this was the best place to Reply.

I used to visit here often when my truck was new.
Love my 2005, it looks great, up to now never a problem with it.
The most trouble free vehicle I have ever had.
Not thrilled about the new ones.

I put a Can of Seafoam in, and it looks to have helped???

I would like to try and fix myself vs going to the Chevy Dealer.
It runs great when until I fill Up my Tank.
Yes, I do fill to the Top until the Pump Clicks off, and keep filling more to get the most in my Tank. But I do this all the time, with Premium Fuel.
This is the Second Tank I have experienced this on.

Thanks,
Keith

 

It isn't a good idea to "top off" when refueling. There is a chance of getting liquid gas in the EVAP canister which could deteriorate the carbon. I haven't heard of any problems with carbon from the newer EVAP systems finding it's way to the throttle body though.

 

Never had a problem, I do this all the time...
When your at Kroger, and your getting $1 Off a Gallon, you try and pack as much as you can in.

 

I just dropped my Colorado to the Dealer.
They say the code is calling out a timing issue and a miss-fire.
But they didn't seem very confident on any more than that.

They asked me to leave it, and a mechanic will do a Full Diagnostic on it tomorrow.
$90 to do that, and it will go towards the repair.

It's just strange only when your at an idol, and that was intermittent.
Maybe the Full Gas tank isn't a variable here?
I just don't know.

It never killed, but sure sounded bad with all kinds of knocking and shaking.
I just hope that didn't cause any damage to the engine.

I have 90K on the Truck, so I hope I can squeeze by another year.
I am very interested in the Diesel 2018.
They had about 10 Z71 Crew Cabs on the lot...
Price varied from 25K to 38K.
I will post the results.

Keith
Marietta, GA

 

the rough starting after refueling is an o2 sensor

 

I have a 2015 chevy colorado v6 and everytime I put gas in the truck it only starts like 5 to 10 seconds of turning the keys and just hearing the car shaking and stuff until it starts and I press the gas it stops and never dose it until i get gas again and I have zero idea what to do

 

What is left of this forum is Gen 1 owners. Try the forum at the link below and you may get more specific answers.

Generally what you describe is likely the fuel evap system. There is a tube from the tank to the engine that is supposed to burn fumes. Liquid fuel is not supposed to get in there, but maybe it is somehow at each fill up. Have you tried not filling up all the way just to see if that avoids the rough start issue? I know that overfilling (topping off after the pump auto stops) risks getting liquid fuel into the system.

General Truck Chat

Can't find the correct topic elsewhere? This is the place for general discussion about the Colorado or Canyon.

www.coloradofans.com