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James, Ford Technician
Category: Ford
Satisfied Customers: 3629
Experience:  Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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My insterment pannel gages go crazy my rpm and speedometer

Customer Question

my insterment pannel gages go crazy my rpm and speedometer gage spikes all the way then go dead my theft light flashes and the engine turns but won't start my aiibag light flashes then stays on i hear abeeping sound when this happens some times it comes back to normal for a short time the inreror door lights flash off & on too some times i suspect a bad cluster but it could be many other things wrong it has me puzzeled Eddie R
JA: Have you checked the fuses? Have you checked the door switches?
Customer: yes all ok
JA: What is the model/year of your Ford?
Customer: 2002 ford f150 4x4
JA: Are you fixing your F150 yourself? What have you tried so far?
Customer: yes i been fixing my cars fof 30 yrs
JA: Anything else you want the mechanic to know before I connect you?
Customer: thats all
Submitted: 11 months ago.
Category: Ford
Expert:  James replied 11 months ago.

Hello does everything go erratic when you turn the key to the on position?

Customer: replied 11 months ago.
Customer: replied 11 months ago.
at times the engine starts right up but when the theft light is flashing it just turns over
Expert:  James replied 11 months ago.

I would begin by swapping the PCM power relay under the hood and see what happens after this. Over the years the stress this relay goes through it eventually fails and causes the same symptoms you are having.