"jim" <jpeter DeleteThis @marlette.k12.mi.us> wrote in message
news:1142645511.185183.12820@e56g2000cwe.googlegroups.com...
> I'm wearing out my starter. It takes 3 short cranking sessions to start
> the 4.3 liter in my 2000 Astrovan, maybe 5 or 6 on cold mornings. For
> most of its life it started on the first crank. Now it takes at least
> two short cranks when hot and 3 or 4 when cold. I could crank until the
> battery was dead and it wouldn't start on the first crank, most likely
> the second too. Three short cranks of 3 or 4 seconds will have it
> running every time. Until I figured out this secret I was cranking the
> hell out of it on the first two and maybe flooding it to the point of
> not starting at all for a couple of hours. Flooding is only a guess
> althought it smelled of gas. Coming from the old school it's hard not
> to pump it a time or two if it doesn't go right away.
If you pump the throttle while she is cranking and the computer sees the
reading of wide open throttle from the throttle position sensor it shuts the
fuel pump off assuming your telling it it is flooded.
Next time watch the oil pressure gauge when your cranking, if she starts
when then oil pressure gauge hits 10psi, check the fule pump relay. The
fail safe if the relay goes bad is the oil pressure switch.
Also when you say 3 or 4 short cranks, are you turning the key completly off
and then back on each time you do it? what fuel injection system?
I'll agree with Miller, change the cap and rotor and wires, and don't use a
cheap nor Bosch wires, GM's can burn a cheap cap and rotor in short order.
AC Delco wires or Packard's(who make AC Delco wires) work best. Use
dielectric grease in cap and plug terminals, and anti seize on the plug
threads, and don't over tighten the plugs.
Whitelightning
>> Stay informed about: 4.3 liter wont start on the first crank.