I bought a 2003 astro van that has had very little maintainence done
to it. It didnt start as well as it should.
As soon as I got it, I changed fluids, etc, and fuel filter, new plugs
and cleaned the contacts under the distributor cap. The old plugs were
in decent shape still but i changed them anyway and gaped them to .060
as per the manual.
I did a pressure test on the fuel pump and it zips up to 60 psi right
away which the guys a the GM dealer tell me is OK.
After I did all that I drove it into the driveway and parked it.
3 days later I go to start iit and it does not start. Fuel pressure is
still good and I have spark. It seems to be crossfiring like it has
water in the distributor or something even though it is dry in there.
The plug wires are installed properly and on the right cylinders.
When I got the vehicle we plugged it into a scanner that said that
there was an "O2 heater circuit failure" which causes the engine light
to stay on. It drove fine for several days with the light on.
The van has 125000 KM on it.
Is there something else that could cause the engine to fire like this?
I will be changing the O2 sensors but for now I need to get it started
so I can get it in my garage.
Any advice greatly appreciated.
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