Having problems with your 1998 Ford Expedition ?

I have a code po354 on my 99 expedition, book says cylinder d misfire, which cylinder is this?

Posted / edited by AnonymousUser on : 11-12-2017

Answers :

I just worked on 98 expedition 5.4l had code PO354. This code refer to an open primary coil winding, open wire, or bad PCM.
\015\012Check primary winding with ohm meter should be from 0.5 to 1.5 ohms and about 2.5 ohms with a hot engine. check wiring with a noid light, run the engine and shake the harness if light goes out repair harness you should have battery voltage with key on the computer controls the ground side.
It refers to the coil circuit , dependind if you have coil on plug or not
Repair Help & Product Troubleshooting for 1998 Ford Expedition

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