From post #6...
On 7.5L non-EFI models with "Hot Fuel" option, locate teh oil pressure switch on the engine and disconnect the electrical connector. Jumper both red/yellow wires together at the connector. Now the pump noise should be constant.(with the key in the RUN position).
And from post #3...
have you check the oil pressure cutoff switch (R/Y wires)?? the power goes through that switch when key is in ON position.
THEREFORE.....
If you jumper those wires together, and the truck runs, you have a bad oil pressure cut off switch. OR bad oil pressure.
If it doesn't run, then you need to check the wiring, bak to their source.
kudos to you cjones
__________________
BroncoJoe19
2006 Alt Fuel Jeep (electric)
'98 windstar 3.8L
'99 Crown Vic 4.6L
'90 Full Size Bronco 5.0L
I'm not a professional mechanic, take my suggestions with a grain of salt, or a cup of coffee
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