Check engine light at high RPMS
04-24-2018, 09:20 AM
#1
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Check engine light at high RPMS
I have a 1992 f-150 with the 5.0 it has a jasper rebuild engine with only around 70k on it, paid 300 bucks for the entire truck but ive been getting a check engine light when I get on it heavy, could this be simply a misfire or could it be more deep, i am about to put ford racing wires, motorcraft platinum plugs, MSD cap and rotor, and an MSD Blaster ignition coil on it hoping this will help, any feedback appreciated
04-24-2018, 02:51 PM
#2
Martin
Wires and plugs never hurt but a coil other than oem can cause lots of problems. Spend that money on a Ford specific obd1 innova tester, only about $35. Tester comes with a book that has code definitions also, it's a good value if you'll be keeping the truck.
04-24-2018, 04:25 PM
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What mind of harm could the aftermarket coil cause?
04-24-2018, 08:39 PM
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Martin
The ignition system won't use the higher voltage for one and it might cause failure of other components. You're trying to eliminate misfire problems and stand a good chance of adding to them.