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spx96
Bone Stock
Posts:33
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| 08/14/2007 6:26 PM |
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| I'm working on a 92 Chevy s-10 with a 4.3. It has a very rough ideal it revs up high and go back down. I thought it would be a throttle position sensor. But the check engine lights not on. I checked it and it flash a code 12. The e-brake lights on does that mean anything thanks |
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SnoMan
Lift & Lockers
Posts:943
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| 08/14/2007 7:06 PM |
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| You might check gasket between throttle body and intake manifold for starters. The are prone to leak with age. |
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Visit the SnoMan at
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spx96
Bone Stock
Posts:33
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| 08/14/2007 7:44 PM |
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| will do thanks |
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spx96
Bone Stock
Posts:33
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| 08/15/2007 6:23 PM |
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| I ran some oxygen around that area and no change in idle? |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 08/15/2007 7:23 PM |
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I suppose oxygen might work, but if the fan is running, it'll blow it away anyhow.
When I'm checking for leaks, particularly around the throttle body / carb area, I always spray a little starting fluid at the base. It's liquid, so it stays in place better, and you'll get a definate RPM rise if there's a leak there.
Oxygen will just dissapate too quickly.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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SnoMan
Lift & Lockers
Posts:943
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| 08/15/2007 7:41 PM |
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quote:
Originally posted by webby4x4
Oxygen will just dissapate too quickly.
Rick
Besides that, oxygen itself does not burn, it is a oxidizer (it helps a fuel burn) so unless it is over rich, oxygen will prove nothing. Like rick said starting fluid or even WD40 will tell you if there is a leak there. |
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Visit the SnoMan at
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spx96
Bone Stock
Posts:33
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| 08/16/2007 4:00 AM |
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| i'll try that thanks |
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