1986 Astro van runs then stalls

Tiny
ROCKERD9
  • MEMBER
  • 1986 CHEVROLET ASTRO
I have a 1986 astro van
v6 with over a hunderd thousand miles
it starts and runs for about five minutes then shuts off
if I wait an Hour it restarts
Iv'e replaced the ignition modual, rotor and cap, and the coil.
when I turn the key after it stalls the pump comes on for 2 seconds like its supposed to but does not start

doesn't seem to be getting any spark after it stalls

any help is appreciated

thank you
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Sunday, August 5th, 2007 AT 10:52 PM

6 Replies

Tiny
SERVICE WRITER
  • EXPERT
Is spark coming out of the cap? If yes, how old are the ignition wires and plugs. Or what shape are they in?
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Monday, August 6th, 2007 AT 7:57 AM
Tiny
ROCKERD9
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The plugs and wires are only three weeks old
and there doesnt seem to be any spark out of the cap
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Monday, August 6th, 2007 AT 11:02 AM
Tiny
SERVICE WRITER
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I would see if there are any codes in the computer before going further. I would verify no spark with a spark tester and verify fuel pressure in spec with a gauge when the problem is happening.
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Monday, August 6th, 2007 AT 11:37 AM
Tiny
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Ok the computer had only one code code 12
which I guess is supposed to be there

so I unhooked the map sensor to see if it would register
and it registered a code 34 which in the manual is map sensor
No other codes are showing though
Ipoured gas down the carb to see if it would fire but no luck
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Monday, August 6th, 2007 AT 12:26 PM
Tiny
SERVICE WRITER
  • EXPERT
WE still need to verify spark and fuel. We need to know if both are mising or one of them is missing. IF there is no spark, then putting fuel into the carb won't matter. It may just one of them or both of them.
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Monday, August 6th, 2007 AT 1:42 PM
Tiny
ROCKERD9
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Checking fuel pressure tonight
will see if thats also a problem

thank you for your time with this
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Monday, August 6th, 2007 AT 2:43 PM

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