This group successfully solved the mystery as to why I could hear my
injectors inside the cab of the truck (a fuel line was sitting against
the seam of the cab). now I'm hoping you can help me with another
the last time I was home, I backed the truck out of the shop (after
looking and looking for this noise). after about an hour I went to
move it, and it wouldn't start. 3 hours later, it fired right up? my
truck has been the most reliable vehicle on the road in the 12 years
I've had it, but then this last April it broke down on a cross-state
trip. turned out to be the ICM. a month later, broke down again and
turned out to be the pick-up coil. a month later, intermittent
injector problems so I replaced both injectors and the ECM (with a
gasket set for the TBI including a diaphram for the regulator).
any ideas on this last issue? you guys nailed the first problem!
when it did that, (it's done it twice now), it turned over just
fine... just wouldn't fire. the first time, it fired back up after 15
minutes... the last time, it was 3 hours later that I tried and it
started. odd, huh?
Next time it does that, try stepping down on the throttle a little bit
while you are turning it over. If that doesn't work then realize that
the truck is 17 years old and probably has a lot of old parts, crusty
wires and dirty connectors. Short of replacing your engine's harness,
you might take a day and go through all the connectors and clean them
up, from the fuse block to the spark plugs. Replace the cheap stuff
that can cause intermittent problems like the fuel pump relay (I've
had to do that twice in ten years), the fuel pump oil pressure switch,
all the fuses, maybe the ignition coil, etc, etc. Even if that doesn't
fix the problem it may very well prevent one in the future, cause it
sounds like your stuff is wearing out.
A few things come to mind:
When the module was replaced, the connectors in the plastic plugs that go
onto the module, might have gotten loose.
Was the grease put on the bottom of the module before installation?
MAybe the wire between the distributor and the coil might have failed.
Just some seat of the pants diagnosis.
I hope this helps.
almost done ghost... Replace the spark control module. It sits
at the base (and inside) the rotor cap. Its flat and black.
88-96... great trucks. Hold onto it. They are future classics like the 66-72's.
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