******10 MPG caused by what? Update******** - Page 3 - 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 04-25-2007, 02:23 PM   #21
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you can either try to rebuild it or just get reman'd calipers. I normally take the easy way and buy reman. calipers (I think it'* safer that way)
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Old 04-25-2007, 02:30 PM   #22
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If I had the time and extra money would do that, but I already have to replace the rear brakes and wheel cylinders, figure out the rear end of my exhaust, patch up my drivers seat, wash and wax, replace my rear struts, get a rez, and dye my dash. This work is turning into a project.
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Old 04-25-2007, 08:21 PM   #23
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Quote:
Originally Posted by trigga_b
What would you suggest to getting those dried up rubber boots out?
Just a normal flat bladed screwdriver. I took mine out not two weeks ago. They're surprisingly resilent...i expected to ruin them with the screwdriver and go get new ones, but instead they decided to hold together so i re-used them. Once you get them out, do yourself a favor and use an electric drill with a round wire brush to go in the holes and clean them out. They are FULL of THICK rust. When you put the pins back in, lube them up well with lithium grease or similar.

However: I doubt your brakes would cause you to have such bad mileage without you noticing them. To cause you to get 100 miles to a tank of gas, they should be burning, smoking, and smelling. I think you should put your stock airbox back on while you're troubleshooting.
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Old 04-26-2007, 02:18 AM   #24
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Tomorrow I'm going to go get plexiglass, k&N, and another pipe. I remember reading a thread where willren was telling someone that they're CAI was actually a HAI and it was killing his MPG. This is what I think in my case plus my pads are still thick. I'm also going to clean my TB.oh and its not a 100 miles a tank, its 200 miles a tank.
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Old 04-26-2007, 04:06 PM   #25
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As a matter of fact could my exhaust be a cause of low MPG? Because I have a dynomax muffler, but the muffler sits closer to the left side and a 90 elbow pipe would be too long. Also temporarily Im using the universal tail pipe which is cut short to fit and is only c-clamped on.
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Old 04-27-2007, 05:22 PM   #26
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Default *******13-15MPG Update*******

I wanted to clean my TB today but couldn't get the MAF off because the other 2 screws are kind of stripped and wont turn. But anyway, I took off my rice pipe and there was nothing but dirt and dust covering the MAF screen. And though that this is most likely my problem. It'* restricting a lot of air and this could be why I feel the drop when I let off the accelerator. Soooooooo could anyone point me in the direction about getting this MAF sensor off?
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Old 04-27-2007, 05:31 PM   #27
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Get the TB off first so you can work with it on the bench. Use penetrating oil and maybe vice grips if necessary on the screws, but take care to not get the oil on the MAF sensor itself. Don't break the screw heads off with the vice grips.

You should never have gotten crap like that on the MAF screen. Don't even thinking about putting that intake system back on if you have that much stuff getting through to the MAF screen. The MAF sensor itself may be toast now. If you're not replacing it, use the techinfo cleaning procedure on it.
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Old 04-27-2007, 05:56 PM   #28
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Quote:
Originally Posted by willwren
Quote:
Originally Posted by trigga_b
Could it be a faulty knock sensor?
No. Not even a remote possibility.
it could be it would throw a code and it wouldnt run the best
i would be very VERY slugish
a faulty knock sensor does contribute to poor fuel mileage
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Old 04-27-2007, 11:52 PM   #29
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idk how much calipers are near you, but here in detroit they about 12 bucks. the hardware kit are like 10. so for whats its worth just change the calipers (imop).

but i have a 92 park ave and a 92 olds 098. both get the exact gas mileage as ur 92 bonne. (about 15-17 city).u say an est 25 mpg city, maybe ur est is wrong. i can get 24-25 if its all highway with my 92'*, but thats about as good as it gets.

have you considered putting ser ii heads on ur 92. theyre much more efficient and will give you more power as well as mpg. i kno people have done it. do a search.
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Old 04-28-2007, 01:13 AM   #30
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Im not worried about the calipers anymore since thats not MPG problem. I'm going to let the shop handle that. But I think I need to go back to my stock muffler. does anyone have one plzzzzzzzzzzzzzzzz
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