Having problems with your 1990 Ford F150 ?
94F-150 Tuuck loses power fuel pump or fuel presure regulator? I changed fuel filter last tuneup not to long ago.
My first guess would be ignition timing, or incorrectly gapped plugs, or faulty wires. Check your air filter. Check EGR . Check tranny fluid. It also could be faulty ignition coils.
Repair Help & Product Troubleshooting for 1990 Ford F150
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