I have a puzzle in the 88 765 that was resurrected from the scrap yard a few years back. When I first got the car running, it had the B230FT engine with the new head gasket, was rewired, and the computer replaced along with most of the sensors. The car would sometimes be very sluggish on take off similar to starting off in the second gear but quickly came up to speed.

Because the engine was clattering like sleigh bells, I replaced it with an 86 B230F, low mileage unit and have put over 40K miles on it with hardly any problems, except the sluggish take off, which goes away if the engine is shut off and restarted while it is warm. The anti knock sensor was wrapped in foam and tucked in the fender area.

One other thing that I noticed is that the air/fuel ration meter shows a very lean signal from the O2 sensor when this is going on. When I was running my experiments on this car, I could manually richen the mixture by fudging the O2 signal to the ECU and the car would act like it was on steriods with the meter running to very rich.

Since just about everything has been changed out on this car without relieving this relatively minor, but irritating problem, I am at a loss to trouble shoot it. If anyone has a theory, I would be appreciative.

Regards,
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Will Dallas, www.willdallas.us, www.willdallas.org, www.willdallas.com, www.dallasprecision.com 86 245 DL 222K miles, 93 940 260K miles, 88 765 GLE 152K miles, 88 780 246K miles, 93 Buick LaSabre 119,000 miles