Fuel Filter replacement and guel mileage - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-29-2005, 01:04 AM   #11
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get the Bosch outta there....they are VERY bad in our cars......Delco 02 rules
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Old 08-30-2005, 01:15 AM   #12
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Originally Posted by willwren
Get the Bosch O2 sensor out of your car and replace it with an AC Delco sensor ONLY. Bosch sensors are notoriously flaky in our cars. Most fail or give bad readings within 30 days.

There'* your problem.
I can't say for sure that I've got a problem with it. I DID check out the performance on the way home from work today. On the way to work, I got stuck on the ramp behind a plumbing truck and a flatbed full of large (approximate diameter 4') iron castings, plus the assorted fittings needed to hook them together. No way to jump on the gas there.

I got around them quickly enough at the top of the ramp, but didn't notice much change.

AFTER work, I got on the ramp and pushed the gas like usual. I used to get up to 65 by the end of the ramp. Today I was up over 80 before I got to the end of the ramp. Gotta watch that stuff. It'* been a while since I had a real ticket. I'd like to keep it that way.

My local Pontiac dealer quoted me $82.42 for a Delco O2 sensor. Online, I found the same part for $39.99. Maybe if they had it in stock, but no, they'd have to order it for me. What a rip!

Where'* the FPR (fuel pressure regulator?) you were talking about?

Again, folks, thanks for your help. It'* tired and I'm late. I've got another long day packing boxes tomorrow.
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Old 08-30-2005, 04:20 PM   #13
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Originally Posted by jwikoff99
No no no, you do NOT have to do anything with motor mounts to change the belt on a Series I. That'* Series II.

I've gone back and forth between 10% ethanol and normal in my 92 SSE, and I've never seen a mileage change either way associated with ethanol.

Rock Island? I'm in Galesburg.
When I ran ethanol in my car, the mileage actually went down slightly. Disclaimer: I bought it at Caseys and they only have 89 octane.
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