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H
hagar
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Joined
Nov 13, 2010
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Mar 18, 2024
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H
hagar
replied to the thread
2018 Yukon SLE Rough Idle/Pulsating idle
.
There is no idle control valve on a 2018, it just opens the throttle blade to adjust idle air. Assuming the tune is stock and someone...
Mar 11, 2024
H
hagar
reacted to
dyce51's post
in the thread
2010 DENALI 6.2 Motor "Seized"
with
Like
.
Thanks for the advice guys...I bought this as a "Project" to get into an XL cheap. The current short Yukon we have just doesn't have...
Feb 12, 2024
H
hagar
replied to the thread
2010 DENALI 6.2 Motor "Seized"
.
Pull your spark plugs and turn the engine over by hand. I have seen it before that a head gasket went and filled a cylinder with...
Feb 12, 2024
H
hagar
replied to the thread
My '02 Tahoe L59 revs WAY too high on cold start ups. Anyone got any ideas?
.
Oh, and tps as well to make sure there isn't something wrong with it and it's showing more than 2 percent throttle at idle. If it is...
Jan 20, 2024
H
hagar
replied to the thread
My '02 Tahoe L59 revs WAY too high on cold start ups. Anyone got any ideas?
.
Like others have said, you need to get a scanner on it. At warmed up temp you want to see the short and long term fuel trims, the IAC...
Jan 20, 2024
H
hagar
reacted to
iamdub's post
in the thread
My '02 Tahoe L59 revs WAY too high on cold start ups. Anyone got any ideas?
with
Like
.
Do you have or have access to a scanner that will show live/real time data? Did you clean the TB yet?
Jan 16, 2024
H
hagar
reacted to
rockola1971's post
in the thread
My '02 Tahoe L59 revs WAY too high on cold start ups. Anyone got any ideas?
with
Like
.
The carbon restricts or completely stops the pintle from moving depending on where it gets wedged. It can wedge between the pintle and...
Jan 16, 2024
H
hagar
replied to the thread
My '02 Tahoe L59 revs WAY too high on cold start ups. Anyone got any ideas?
.
Absolutely. In this case it's possible it isn't able to go from its more open while cranking position, to less open right after it...
Jan 16, 2024
H
hagar
replied to the thread
My '02 Tahoe L59 revs WAY too high on cold start ups. Anyone got any ideas?
.
Not trying to be THAT guy, but the more likely culprit would be that the pintle is restricted from closing quick enough after start up...
Jan 16, 2024
H
hagar
replied to the thread
My '02 Tahoe L59 revs WAY too high on cold start ups. Anyone got any ideas?
.
And this would be super easy to figure out with a scanner and logging the idle air duty cycle. If it's a vac leak, you will see the iac...
Jan 15, 2024
H
hagar
replied to the thread
My '02 Tahoe L59 revs WAY too high on cold start ups. Anyone got any ideas?
.
After it warms up to temp and idles properly, unplug the iac while idling, shut the truck off, and let it get cold. Try starting it...
Jan 15, 2024
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