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Oldsmobile/Buick Repair/Pulse problem with fuel injection

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Question
Hi again Tom.  I'm back with the 2003 LeSabre situation.  It still won't start, and it traces back to good fuel injectors that don't pulse, because of bad PCM grounding.  Anyway, I retried the noid light test, and something peculiar happended that I would like your input on.  When I cranked the engine the noid light flashed five times in a row, then quit flashing altogether.  Thereafter, whenever I cranked and no matter which harness I tested, the noid light would not flash at all.  I tested the noid light itself, and it is okay.

According to my manual and other sources, in the 2003 LeSabre Passlock 3 disables the fuel pump and not injector pulse.  I have good fuel pressure, just no pulse, except for the one-time test pulses mentioned above.

What problem would most likely cause the very limited flashing of the noid light?

Answer
HI JOHN,I AM 98 % SURE THAT ON THIS PASS LOCK SYSTEM IT SHUTS THE INJ PULSE DOWN AFTER 3 SECONDS OF RUNNING. WE ARE BACK AT THE PASS LOCK SYSTEM.I AM NOT AT WORK TODAY SO I CAN NOT LOOK THIS UP ON MY REPAIR COMPUTER. [NO DIAGRAMS] PROBLEM IS WITH THESE PASS LOCK SYSTEM GM CHANGES THERE MIND ON HOW TO KILL THE ENG WHEN IT IS ACTIVATED. THE FACT THAT THIS FLASHES 5 TIMES AND STOPS TELLS ME IT SURE DOES SOUND LIKE THE PASS LOCK SYSTEM. BECAUSE WE HAVE HAD MANY CARS LIKE YOURS THAT WILL START AND SHUT RIGHT DOWN..NO PULSE..YOURS SHOULD START AND DIE BUT IT WONT EVEN DO THAT ??? YOU STILL MAY HAVE MORE THEN ONE PROBLEM HERE... I THINK HOWEVER YOU SHOULD BE ABLE TO FIND THIS BY CHECKING INTO GOOGLE...GOOD LUCK TO YOU,,,TOM.....LET ME KNOW WHAT HAPPENS..
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HI JOHN AGAIN,YOU PROBABLY DO NOT HAVE 2 PROBLEMS. IT WONT START BECAUSE IT IS MORE THEN LIKELY A BIT FLOODED FROM YOU CRANKING THE ENGINE OVER A LOT...JUST THOUGHT OF THAT...TOM  

Oldsmobile/Buick Repair

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TOM SHEETS

Expertise

Can answer all questions pertaining to mechanics of GM cars from 1965 to present. I will answer questions from 6:00 am to 10 pm est.. I will not take diesel or paint questions. If this olds and buick section is maxed out you can get to me in the chevrolet section...

Experience

I have 30 plus years experience in servicing these cars. I can answer questions on carburetor, fuel injection,ignition systems, suspension, brakes and abs, cooling systems,a/c and heater,manual transmissions, rear differential and electrical system,charing system and battery. I am a Master ASE certified mechanic in all 8 categories: - Brakes - Heating and Air Conditioning - Automatic transmission - Clutches and Transaxle - Engine performance - Engine repair - Electrical - Steering and suspension I am certified for NYS inspection and clean air insp.

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ASE

Education/Credentials
I am a Master ASE certified mechanic in all 8 categories (see above) I am an Air Conditioning/Freon recycling specialist with ASE. I have at least 4 years of technical training and many hours of continuing education.

Past/Present Clients
many customers in our busy shop for the past 30 plus years

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