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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 11-11-2009, 09:42 PM   #1
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just bought my Bonnie in July so it'* still rather new to me, but I love this car! there are only 2 small problems I'm having right now. the first is a hesitation when I get on the gas heavily. I've changed plugs and wires. but it still spits and sputters from time to time and when it gets low on gas (below 1/4 tank) it will stall out from time to time when coming to a stop. I'm thinking fuel filter, but I'm wondering if there is one inside the tank or is it just the one inline? the other problem I'm having is with the heating system, it'* electric. the heater works great on defrost and the floor, but how do I get it to go to the vent on the dash???? any help is appreciated.
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Old 11-11-2009, 09:59 PM   #2
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Just one fuel filter, and it is in-line.

Air out the defrost and floor but not out the vents is a system default when there is a problem with the system. There'* a thread on that somewhere. Give me a few minutes to find it.
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Old 11-11-2009, 10:04 PM   #3
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thanks!
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Old 11-11-2009, 10:12 PM   #4
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Old 11-12-2009, 08:19 AM   #5
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The 1/4 tank stalling is common in 92-93. The baffles in the fuel tank are known to break free, allow sloshing and basically fuel pump starvation around corners, at stops and when aiming down hill.

Airflow.. this is a tricky one for your car. Does the airflow move on it'* own. Say you pick AC..will it move to the dash vents? 92-94 electronic climate control had it'* programming and it sticks to it. There was no option in these years to choose where the air went. Heat automatically is directed to the floor, defrost to the windshield and Ac to the vents. It is possible to change this by swapping the headunit and HVAC programmer. If the air is coming out floor and dash both ...as well as only. Check the vacuum can mounted to the firewall, right next to the wiper motor. Most likely your hesitation and the HVAC are related to a vacuum leak.
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