OK. Sorry about the last post forgot to tell you ANY info about the coughing, sputterring, stalling car. Its a 1990 lesabre with the 3800 series 1. 220 000km on it. It was a BC car but is now in Ontario. The car seems in overall good shape, with no rust at all. A couple of easy-fixed small dents, and a broken grill/2marker lights. I drove it from BC to ontario only 2 hours after i bought the car for $750 over 3500KM on Dec 22 at 8pm, arrived Ontario dec 25 6:30 am. So i drove the car hard to get it here. set cruise at 145-150kph most of the way. About 1800K into the trip is when the car started acting up. I also was thinking the car came from 6500Ft elevation, its a 510 feet elev. now. Computer no good maybe? I bought some parts havent installed yet...K$N filter(air and oil) irridium plugs, ac delco wires. 2 12" Clarion Pro audio, 2 clarion 6*9'*, 2 5 1/4 clarion, 2 Scoche 550 watt amps, 1 Explode 1200Watt amp, Innovatek Deck(off ebay theyre KILLER---search INNOVATEK in all categories), some fake suede for the headliner and door panels (light tan/navy blue), a whole lotta bondo and fibreglass. Car will be painted BLACK with gold accents, no chrome. Thanx for the help on the MAF sensor location of u know where it is. Also the engine diagram would be nice to have too.

James- 1990 Buick lesabre 3800 0-60 9.5 secs, top speed 160 kph
1988 Mercury Cougar Xr7 5.0-5 speed conversion/lowered/drag launch rear, NOS, Borla exhaust, 0-60 4.6secs top speed 266 kph
1985 Pontiac Fiero GT, 3.4 Turbo engine swap, 2006 5 speed getrag, custom ferrari red paint, kyb suspension, 0-60 4.2 secs , top speed 291 KPH

sure. the maf sensor is located on the throttle body. I guess you're going to clean it? Do so per the instructions in techinfo.

but also...are you getting any service engine soon light?

also, you have an LN3, not a series one.

as a reference pic, its the black box with a connector coming out of it between the air intake tube and the intake manifold.