02 Chev Express V6 Vortec keeps Quiting out of the blue

Hi Their
My 02 Chev Exprss, V6 Vortec keeps having the same issues over and over. The Computer never shows any fail codes on the scanner. No one
at the Dealer seems to know exactly whats the cause. It dosn't matter if its cold, warm, raining, snowing does the same things over and over and never the same thing twice. This is a breakdown of what has happened so far. i drive Courie in this Van over 500 kms / day 1) Went to leave from work, started tha van, moved 4 feet then stalled. Wouldn't re-start. After sitting an hour, started and ran perfect for 4 days 2)on the 5th day, Drove about 150 Kms, stopped at a store, left vehical idling, when I came out it wasn't running (Stalled). tryed to re-start and it wouldn't. 10 Minutes latter, started and drove 2 Kms, died again wouldn't start. Came back 5 hours latter, drove home no problems. 3)Worked well for a week. Other then when driving at around 100kms / Hr, or under a load up hill, it felt like it was missing or cutting out, but, never died. 4)After a week, went to start in morning, wouldn't start. It took 2 hours before it finally started. Ran well, Stalled 2 more times, but always strated right up. 5)2 days after that, drove nearly 350 Kms, all day, never shut the vehical off. On the way back home, driving at 110 Km/ Hr, suddleny, stalled out of the blue. Coasted off the road, waited a minute, it restarted. Drove about 3 more kms, died again. this time it wouldn,t re-start. It tryed, ran abit, stumbled as you pumped the gas pedel, but wouldn't stay going. Came back 2 hours latter, drove it home worked fine. Stalled once, but re-started right away.
No one at the delaers can make it die for them. I replaced Distributor Cap, Rotor Button, Coil, Fuel Pump, temp Sensor, still does the same things. As you can see, It has no set patteren. Just does it at random. This engine was put in about a Month ago. Never had these issues with the old engine. Maybe I should simply put it out of its missery.Anyone who has any ideas, please let me know.
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snipped-for-privacy@eastlink.ca says...

I too had a GMC doing exactly the same thing for a period of almost a year. It got to the point where we all (including the dealer and the zone rep) thought the car was haunted. We did everything you have had done and more. It finally turned out to be a bad connector to the fuel pump inside the gas tank. The connector looked fine, but was very intermittent. Cutting off the connector and replacing it with a new one solved the problem
Not saying this will cure your problem, but it might be worth checking out.
Chuck
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says...

The OP should be able to check those connections and the ground connection by measuring the resistance of the loop from the load side of the fuel pump fuse to ground. Jump up and down on the bumper to simulate some motion and watch the impedance. I don't know where the fuse is located on that vehicle. I have heard of others having problems with the ground connection as well.
I recently changed a fuel pump on a 93 4.3z and the bad pump in the loop measured about 60 ohms. The new pump measured between one and two ohms.
skimmer
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On Sun, 11 Feb 2007 04:38:35 GMT, "News Skimmer"

This does not always work because it does not show nature od a weak connection under load because it might look good with a the very light curcuit loading of a ohm meter (mere milliamps at most) and fail under load. I would likely show a bad fuel pump motor though. I tend to suspect fuel pump here as they are troublesome at times and can act like this and if you run tanl low a lot, they will have a shorter service life because fuel cools and lubes them. A lot of fuel pumps have been replaced over this. ----------------- TheSnoMan.com
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try replacing the fuel pump
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