High Idle at Startup
Joined: Feb 2006
Posts: 820
From:
RE: High Idle at Startup
ORIGINAL: rriddle3
If it's a 4.3L V6, it's a Vortec. How high is 'very high'? When does the idle speed drop down?
If it's a 4.3L V6, it's a Vortec. How high is 'very high'? When does the idle speed drop down?
RE: High Idle at Startup
I could have sworn I posted here... Anyway, the 'vortec' head design came about in the mid-80's. It wasn't until the early 90's when it became a marketing buzz word.
Anyway, back to the problem at hand. I guess we need a quantification to the term 'idles very high'. At what RPM does it idle at when cold. Does it drop down to a normal idle after it is warmed up? If it does, what is the idle RPM warmed up?
Anyway, back to the problem at hand. I guess we need a quantification to the term 'idles very high'. At what RPM does it idle at when cold. Does it drop down to a normal idle after it is warmed up? If it does, what is the idle RPM warmed up?
Joined: Feb 2006
Posts: 820
From:
RE: High Idle at Startup
ORIGINAL: swartlkk
I could have sworn I posted here... Anyway, the 'vortec' head design came about in the mid-80's. It wasn't until the early 90's when it became a marketing buzz word.
Anyway, back to the problem at hand. I guess we need a quantification to the term 'idles very high'. At what RPM does it idle at when cold. Does it drop down to a normal idle after it is warmed up? If it does, what is the idle RPM warmed up?
I could have sworn I posted here... Anyway, the 'vortec' head design came about in the mid-80's. It wasn't until the early 90's when it became a marketing buzz word.
Anyway, back to the problem at hand. I guess we need a quantification to the term 'idles very high'. At what RPM does it idle at when cold. Does it drop down to a normal idle after it is warmed up? If it does, what is the idle RPM warmed up?
RE: High Idle at Startup
Again, do not confuse the change in the intake manifold bolt orientation with the start of the vortec cylinder head design. All 4.3L engines utilized vortec cylinder heads. Not that Wikipedia is a be-all and end-all source for accurate information, but they have it right in this case: GM Vortec Engine
RE: High Idle at Startup
You are not listening, but what do I know...[&o]
Anyway, the TBI motors do have a problem with the throttle body base gasket. You can troubleshoot vacuum leaks by spraying some carb cleaner around the base of the throttle body.
Does the idle ever return to normal?
Anyway, the TBI motors do have a problem with the throttle body base gasket. You can troubleshoot vacuum leaks by spraying some carb cleaner around the base of the throttle body.
Does the idle ever return to normal?
Thread Starter
Joined: Oct 2007
Posts: 28
From:
RE: High Idle at Startup
sometimes it returns to normal on its own, sometimes it wont return to normal until i start driving.
and i always thought the vortec engine was the one with the intake manifold and fuel injected. im not too educated on my truck, ive been slacking
and i always thought the vortec engine was the one with the intake manifold and fuel injected. im not too educated on my truck, ive been slacking
Joined: Feb 2006
Posts: 820
From:
RE: High Idle at Startup
ORIGINAL: Brandon31386
sometimes it returns to normal on its own, sometimes it wont return to normal until i start driving.
and i always thought the vortec engine was the one with the intake manifold and fuel injected. im not too educated on my truck, ive been slacking
sometimes it returns to normal on its own, sometimes it wont return to normal until i start driving.
and i always thought the vortec engine was the one with the intake manifold and fuel injected. im not too educated on my truck, ive been slacking
Kyle, thats something I didnt know I thought the two went hand in hand.
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mcdevin1973
2nd Generation S-series (1995-2005) Tech
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Oct 5, 2014 02:52 PM
