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#1
07-21-2007, 03:33 AM
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Starts then dies
1989 GMC Jimmy 4.3 ltr 4x4 w/o anti-theft. Starts and runs for about 5 sec. then dies. Replaced fuel pump, pump relay, oil sending unit, distributor ignition unit. On-board computer diagnostics reads 'ALL CLEAR' no problems exists.
Replaced the in tank fuel pump. Drove it for about 3 weeks. After a 5 mile trip, went to start it & it would only start & run for 4 to 5 seconds. When it did finally start & run, it would stay running until I shut it off (30 min. or so). Then the same problem came back. Now it won't run more that 5 sec. Any suggestions? 
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#2
07-21-2007, 10:48 AM
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Re: Starts then dies
Does it have good spark to all plugs?
Do you have good fuel prsssure? Will it start or run with a snort of carb cleaner? MT
__________________
Remember proper testing gives us the answer to many problems. MT
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#3
08-06-2009, 08:51 AM
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Re: Starts then dies
Check the engine crankshaft sensor on the front of the lower part of engine.
It has one bolt and pulls out and has a wires with a clip towards bottom to un-clip. it might be broken in 2 pieces, has a round metalic /w plastic housing about 3/4 " long. If not broken still could be bad. just ran across one on 99-blazer
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