Thanks Steve, but since I've never been to RI he's probably safe I'll never collect.
The funny thing about autoshops, inde or dealer, is that for every 8-10 guys there are usually 2 or 3 aces, 2 or 3 good ones and 3 or 4 young bucks who try hard. Chances are where ever he took it the Aces and journeymen were just busy with tough cars and the simple SES light went to a newB. Fuel trim readings take experience at looking at the scanner because there are no specs. I explained in the IS forum not long ago how MAF's work and why they can cause a hesitation(and got crushed for a 2 page post). When they get dirty, they think less air is going into an engine than realy is. The ECU fires injectors acordingly. But since more air is ACTUALLY going into the engine this is not enough fuel (so say the O2 sensors). The ECU says ok, we are lean for this air flow reading, so I will add more fuel , and more and...soon it takes 20% more fuel than it should (acording to the MAF) and 20% is the threshold for setting P0171 lean code. They should be cleaned at every tuneup.
Vince said..."It ran fine for about two weeks or 1/2 tank of gas before the CEL and Track off light had illuminated?"
Welcome to 2 trip detection logic. If you get a cylinder missfire that misses over 50% of the time it sets in one trip with a "flashing CEL", below 50% it takes 2 trips and since it may not always check for missfire it may take more than 2 key cycles to set the code. Start-drive-shutdown does not always equal a drive cycle. Water will seep into the plug bores when you washed it and then beome a vapor due to eng heat and not missfire on the way home. It needs to fully cool and condense in the bore at least one cycle before it dribbles down close enough to the plug base to provide a gound path. In theory it would take at least 4 long drives after washing to get the light. Glad it was a simple fix for you...you will enjoy your Lex for years to come.
Now I think I'll get started on the Meyers without you.....Regards, Mike
←
I just want to thank you all for your help and if it cost just a drink, so be it. Sure beats $800 Inskip Lexus rip off. First off I checked all the plugs and every one was bone dry with no water or condensation. Second, I cleaned the MAF with brake cleaner and reset the CEL and Track off light by taking out the EFI fuse for a minute or two. Bamm it is running like a charm. I only drove it for about 20 miles or so, but it runs flawless, with no misfire detected at all. Runs nice and smooth. If this was the cure, then how the hell can Inskip want to charge $800???
I think that it was the MAF in the end. I hope that this post can possible help some others on the forum. I will report back if there are any problems in the future. Once again Thanks to all............... Vince