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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-09-2006, 12:35 AM   #11
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Matt, check out your O2 sensor. Remember mine?
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Old 02-09-2006, 12:46 AM   #12
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His is virtually brand new. AC Delco. Can't rule it out regardless, but the odds are very low.
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Old 02-09-2006, 01:21 AM   #13
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Why do you need to extend the gauge to know what pressure at WOT?
The fuel pump produces 60 psi
When the vacuum drops to 0 (ie.disconnecting the vacuum port on the regulator) then the fuel pressure should be at maximum. For me it'* 56 psi.
With the car idling the vacuum should be highest and with the vacuum connected, the regulator should be throttling the pressure to its lowest setting. For me it'* 46 psi.

With my adjustable regulator I have it set 4 psi above what it was stock.
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Old 02-09-2006, 10:16 AM   #14
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Quote:
Originally Posted by willwren
His is virtually brand new. AC Delco. Can't rule it out regardless, but the odds are very low.
Just thinking it could have melted...
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Old 02-09-2006, 10:27 AM   #15
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Oh, gotcha. From the extreme exhaust temps. Not a bad idea.
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Old 02-09-2006, 08:21 PM   #16
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true enough, i will take a peak at her.
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Old 02-10-2006, 01:37 AM   #17
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The o2 sensor that I took out of my car last fall was very melted, and the o2 I took out 3 weeks ago was melted also, but not nearly as much as the first.
Haven't had much driving since.

Definitely don't rule out the melted o2'* -I'd never experienced that before, but now having seen 2 in the past 6 months I definitely suggest you check it if there is reason to.
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Old 02-10-2006, 01:47 AM   #18
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Just thought to mention a small side benefit to changing to aftermarket headers is the O2 sensor is relocated another foot further down the exhaust in a much cooler location. Most kits include the O2 sensor extension harness.
When these engines make big power, they make big heat. Darn combustion engines aren't very efficient.
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Old 02-10-2006, 01:53 AM   #19
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lol no such thing as headers for my application lol
all ive heard is..93 SSEi? haha my grandparents owned one of those, headers, nope sorry
lol
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Old 02-10-2006, 02:21 AM   #20
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Quote:
Originally Posted by OLBlueEyesBonne
The o2 sensor that I took out of my car last fall was very melted, and the o2 I took out 3 weeks ago was melted also, but not nearly as much as the first.
Haven't had much driving since.

Definitely don't rule out the melted o2'* -I'd never experienced that before, but now having seen 2 in the past 6 months I definitely suggest you check it if there is reason to.
Having factory origninal 2.25" exhaust, the SC/SLE'* are more prone to this perhaps. In todays case, no that you've upgraded your exhaust to 2.5", I know what your problem is.

The 94/95 Gen3 SC and TB together produce too much flow. And there are too many factory restrictions.

I'm beginning to think that the LIM and EM porting should be a requirement on 94/95 L67'* before a pulley.
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