Question about 1999 Chevrolet Astro
The coils are not that hard to replace and you can pick one up at Auto Zone, they will also have a performance coil there too for around the same price. There was a TSB to the dealers that the screen that allows the distributor to breath to keep condensation from occurring get's dirty and corrosion occur to the wire's in the distributor. You may want to replace the rotor and cap or just inspect them for cracks and wear, inspect the condition of the wires in the distributor and make sure the screen is clean at the base of the distributor. The other thing to is to pay attention to the Ignition Control Module (ICM) there around $40.00 at Auto Zone too and they will have the step by step instruction for you to get the job done. The other thing that would cause a not start is a bad MAP sensor, that's going to be on the intake manifold buy the coils, check to make sure the wire harness is not damaged in any way. If you do go to Auto Zone have them scan the van for any DTC codes to why you have a no start. What is common is the ICM may have gone or is going bad due to corrosion and time, the coil may be bad but check the wire harness first, most of the time if there bad they never work again, check the MAP sensor wire harness and have it checked or replaced. Next time the van will not start, disconnect the MAP sensor wire and if the van starts. Replace the MAP sensor, have the van scanned for any DTC codes. The last thing would be a bad or dirty fuel filter, do a fuel pressure check at the shredder valve, you should have 60 to 65 pis during fuel line prime Engine not running, just fuel pump. and anything different will give you a no start. Good luck and hope this helps. keep me posted, well get your van running 100% again.
Posted on Jun 27, 2009
Next time when you face the same issue (after heavy rains), try to get the ignition coil tested.
There are few basic which you can to for your self, check the link
This should tell you if it is the ignition coil which is faulty.
Posted on Jun 26, 2009
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Posted on Jan 02, 2017
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