Originally Posted by 123timmy
5.0L 305 tpi engine code "F" need to know timing. book says 6 degrees internet says 12 and a friend says 0. I have been having a lot of trouble ,car losses power around 3000 rpm. mostly when car gets hot and its not to long before the gauge reaches ***--->105.<---***Replaced cap,rotor,wires,plugs,module,fuel filter.Compression good,fuel pressure @42lbs.Number 3&5 the plugs were burnt on one side replaced ,not much better.Really need some advice,thanks
Do you MEAN "205" ??
Did you put the heat sink compound on the new module? heat will kill it right off if you skipped that step, and under load it will fail. Have it tested again..freebie at auto zombie..and New compound when installing it..those ALSO have a high failure rate, like 1 in 3 or 5 RIGHT out of the box..
The coil May be failing under load also..
Test the coil with your DVOM, set to Ohms, R X 1 Scale, Calibrated to "000". Probes on the Batt and Tach Terminals.
Measure the primary, It should read LESS than an OHM, but MORE than 000. If not toss it it bad or going to be bad..
NEXT , test the Secondary, set your scale to R X 20K or higher..probes to the carbon rotor pickup, and the batt terminal.
It should read between 6000 and 31,000 OHMS..If not toss it..
ALSO, keep in mind, this is a "Static" test..If the coil has windings breaking down (internal arc over due to the insulating paint flaking off) It may not show on an ohm check..you'd need a scope for that, so If you suspect it replace it with a Known good one.