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04-18-2014, 04:00 PM
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#1 |
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Registered User
Join Date: Mar 2013
Location: West Plains MO.
Posts: 6
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98 Blazer leaning out at full throttle
I am so ready to go nuts ! I have 98 blazer that leans out at full throttle but if you lift a little it start pulling again. When you give hard throttle the O2 sensors voltage drops to 0.492 showing it leaning out . I have no vacuum leaks I Just replace intake gaskets my fuel pressure is 60 lbs. and does not leak down . Here the weird thing after I stop and put gas in it when I start it up it try to died when I pull back on the road. So does anyone have any idea what wrong ??? Thank !
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04-27-2014, 02:05 PM
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#2 |
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Registered User
 
Join Date: Oct 2011
Location: jackson michigan
Posts: 755
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Re: 98 Blazer leaning out at full throttle
You have fuel pressure but what about volume? Maybe kinked fuel line or blocked tank pickup.
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04-27-2014, 03:19 PM
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#3 |
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blood type; Retumbo
Join Date: Jan 2004
Location: next to my reloading bench
Posts: 10,269
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Re: 98 Blazer leaning out at full throttle
.492 is not lean, it's mid-range.
__________________
Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card |
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04-29-2014, 11:57 AM
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#4 |
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Registered User
Join Date: Oct 2009
Location: .
Posts: 2,179
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Re: 98 Blazer leaning out at full throttle
When monitoring oxygen sensors, you need a scanner that will graph, not just a scanner that will give you a number. Did it do it before you replaced intake gaskets? Is the check engine lamp on? Any Codes?
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