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Author
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Topic: Need tuning help
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50.stang
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Member # 4009
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posted
 
 
I keep pulling a code I believe 91 that says that the O2 sensors are always reading lean. Also, the car will studder at times. The motor was just put back together its got heads, e-cam and blower. 1.7 rockers also. What can be causing this lean condition? Also, the vacume is only at 8 hg but I cant seem to find any leaks. Please help me out with any advise.
Posts: 80 | From: Bay Area | Registered: Jan 2004
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50.stang
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Member # 4009
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posted
Oh yeah, as far as fuel goes its got #30 injectors and a 255lph pump. Also, its got the areomotive fpr.
Posts: 80 | From: Bay Area | Registered: Jan 2004
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MustangNate
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Member # 4559
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posted
I don't think I'll be able to help with the actual problem, but for those who can. Maybe you should tell us what heads, blower, and how much boost you are running.
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1989 Mustang LX Vert, 5.0 Auto
Posts: 1032 | From: Chico | Registered: May 2004
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gt40
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Member # 3587
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posted
What plugs are you using?What was the timing set to?
Posts: 357 | From: n/a | Registered: Oct 2003
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50.stang
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Member # 4009
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posted
autolite 23's and the timing is at 10
Posts: 80 | From: Bay Area | Registered: Jan 2004
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gt40
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Member # 3587
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posted
Was the cam advanced at 4 deg?
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gt40
Posts: 357 | From: n/a | Registered: Oct 2003
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white1990stang
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Member # 2307
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posted
what heads do you have. if they are tfs they call for 3429's completely diff. plugs
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You must be fast, cause I was haullin ass when I passed you.
Posts: 1308 | From: martinez | Registered: Jan 2003
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50.stang
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Member # 4009
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posted
the heads are edelbrocks. The cam is not advanced. Do any of you guys think that this has something to do with the low vacum? Does anyone else running a cam like this find trouble keeping their power brakes?
Posts: 80 | From: Bay Area | Registered: Jan 2004
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Hungry Hippo
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Member # 537
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you probably have the wrong plugs. go to edelbrocks webpage or something to find out what you need
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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50.stang
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Member # 4009
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posted
Ill check, but Ive known many people that have used these same plugs. They are the regular autolites with the 23 heat range.
Posts: 80 | From: Bay Area | Registered: Jan 2004
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