99 yukon bogging out

[dboy24's]

hello my yukon seams to bogg out every time on start up ...so what it does is i turn the truck on and if i don't let it worm up (summer or winter) as soon as i put it in gear and give it gas it starts bogging (throttle wont respond ,like its choking) then after 30 seconds it'll be ok .BUT if i start it up and rev it on and of for like ten seconds it'll be fine as soon as i put it in gear .so can somebody help me i dont know whats wrong i changed spark plug and wires , fuel filter ,cleaned out the throttle body, and i have done a oil change about a month ago ....any help will be appreciated

 

[BattelWagun]

It seems like it might be misfiring badly while in open loop... so we need to know a few more things:
Are there any other symptoms like a check engine light(and when is the last time it had a good tune up)? Does it idle fine while cold, before you put it in gear? and what kind of 'bogging' are we talking about, is it a smooth loss of power, or does the engine shake badly and sputter?

 

[dboy24's]

ok thanx for the fast reply i just did a oil change a month ago and spark plugs and cables , fuel filter thursday .. my truck idles fine at start up no shakeing or sputtering smooth loss of power no check engin light .it happens only for example (im running late to work and i just jump in my truck and i have no time to let it worm up and i put it in gear and hit the gas and bamm sputtering for five secons or so and then its normal after that)also some times when im at the stop light and i go it'll do it again it has been doing this for a bout 3 months befor it would be fine . ohh and sometimes when it sputtering ill hear a pop in the exhaust or motor hard to tell because im in the truck

 

[big'un]

seems like a misfire to me ..... you could have a bad plug or wire even tho there new

 

[dboy24's]

seems like a misfire to me ..... you could have a bad plug or wire even tho there new[/QUOTE


there only 2 days old

 

[ezdaar]

its completly possible to buy broken new parts...

 

[dboy24's]

its completly possible to buy broken new parts...

shure but i dont think my truck was acting up and then i buy new parts and its still acting up doing the same thing it did before with the old parts

 

[big'un]

you could still have a bad plug or wire though man

 

[BattelWagun]

Well it's a possibility he bought bad parts, but since its the same issue he had before he bought new parts it's just less of a chance that they're faulty. Okay, so what you should probably do at this point is pull all of your plugs and look for any that are out of the ordinary, i.e. the white insulator is burnt or possibly one is a different color than the rest.

If you want, post up some pics so everyone here can see and tell what they think

 

[gpracer1]

If it was doing this before and after plugs and wires, then I doubt that is it. I would bet more on open loop items like MAP, ECT or TPS. Fuel pump may also be an issue. Could also be a ground issue.