Quote:
Originally Posted by mcdon26
I haven't heard of the old tap test
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The old Tap/twist it was used on the older PCM computers to check for circuit board problems.
Not any way to do it on the VCM computers.
As said before it needs tested when it does it.
One test you can do by yourself is hook up a fuel pressure gauge and tape it to outside mirrow or outside windshield and watch fuel pressure while driving and when it does it.
If fuel pressure hold up to specs driving and when it acts up then it is other problems.
But still needs tested when acting up.
Find a good repair shop that will test it for you.