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Choke Adjustment?

twiget

1/2 ton status
Joined
Jul 8, 2008
Posts
325
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Location
Down South
I got into my 'burban this morning to go to work, and it started up same as always. But when I gave it some gas, it would surge-bog-surge-bog until it finally smoothed out after about 10-15 seconds. The check engine light never came on.

I got about a mile from home and decided to turn around and drive my Toyota to work. Just as I'm turning down the street I live on, it is like someone flipped a switch and the surging went away, and the truck was perfectly drivable (still drove the Toyota to work) which is why I thought there might be a choke issue.

It is a '90 with a TBI 454, is there even an adjustment for the choke on it? I have had a couple EGR valve codes pop up in the last few weeks, but nothing today.
 
Just saw this, no your rig is Fuel Injected. It's all electronically controlled, no choke....

When's the last time you changed the fuel filter? Have the fuel pressure checked, your pump may be dying....
 
ya answered your own question... most off-idle surging/stumbling issues end up being the EGR..
 

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