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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-10-2005, 01:37 PM   #31
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When I first got it I disconnected a terminal to reset the computer after i replaced the cam sensor. No go. I have never had a dead battery

Yesterday when I put the new interruptor in, I unhooked the terminal. Then this morning I put it all back together and screwed the terminal back in. The service engine soon light wasnt on and the stalling problem was completely gone!
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Old 09-10-2005, 01:58 PM   #32
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You're good for another 100K miles now. Just do the AC Delco ignition conversion, and you'll get as good mileage as a 4cyl VW.
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Old 09-10-2005, 02:36 PM   #33
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Default I was going to try and explain..

http://www.bonnevilleclub.com/forum/...=439691#439691

The Cam sensor/Interupter thread...

I doub't that it was stalling so bad before they dissconnected the battery...

When a Code 41 sets, the ECM uses the last known cylinder #1 TDC reference, or the last SFI reference pulse... With no idea what or where the fuel pulse is the car will not run worth a ****...

Oh well...lol... I'll leave that one alone

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Old 09-10-2005, 04:28 PM   #34
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Well, it was stalling all the time before I fixed it. Now that it'* fixed it doesnt stall anymore. Im willing to bet it was the interruptor.

BTW, No bonneville will get as good mileage as a diesel 4cyl VW. Sorry

Edit: I asked my father if he disconnected the battery while it was stalling and he said he disconnected it many times to reset the ECM and it didnt do much.
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Old 09-10-2005, 05:51 PM   #35
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What Don is trying to say is that when a cam sensor fails, the computer falls back to what it remembers as being right, and that works okay, but not great. When you pulled a battery terminal, it lost that memory. With no signal from the cam sensor, it ran like crap and stalled, most likely worse than it had before. That'* all he'* saying.

Highway mileage though would be similar between a gas VW 4-cyl and a Bonneville. No, a Bonneville won't get the same mileage as a VW diesel. Then again, a VW diesel isn't exactly a car that I'd want to drive/own...

But to each his own. Glad you got the Bonneville fixed.
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Old 09-10-2005, 08:28 PM   #36
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My old VW Golf got about 30-34mpg. I havent been able to get better than 22-24mpg with my bonneville, but it could be the way I drive it. Either way, smaller engine smaller car is going to get better mileage, whether its a Gas or Diesel. Plus there is less to go wrong on a older VW. Either way im going to sell my bonneville now that I have everything fixed. Im going to start at $1000.00 obo. Does that seem fair?
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Old 09-10-2005, 09:21 PM   #37
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"It stalls when I start to slow down, usually at 40mph or under. The RPM needle will drop quickly to 1,000, then to 400ish, then stall."

That sounds more like a gummed up IAC. Varying idle speed is another sign but where I would look first.

Have decided to let my son use the Bonne until he finishes school, the a/c died on his Grand Am and is not really worth putting a lot of money into it. Was having trouble considering selling anyway, have had since new and am attached to it.
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Old 09-10-2005, 09:35 PM   #38
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I thought it was an IAC too, but as soon as I did the JB Weld trick on your site, the stalling stopped. It'* been normal ever since.
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