2000 Ford Mustang Electrical serge

DBINGHAM

MEMBER
2000 FORD MUSTANG

Electrical problem
2000 Ford Mustang V6 Two Wheel Drive Manual 120000 miles

Recently in the past month I have been driving down the road and after the car has warmed up (aprox 10 mins of driving), all of the dash board shuts off. The needles for the odometer, fuel, battery, oil pressure, and the radio, flips all the way to the right and then all the way to the left, the power shuts off and then everything turns itself back to the way it was before the surge. Is maybe just that the battery terminals need cleaning? The alternator belt is taught and seems to be in a good order.

1 Reply

FLEXY5

MECHANIC
512 POSTS

What you are noticing is temporary power loss. The guage sweep is the same sweep that you notice when you first turn the key on. When you state that it shuts off are you refering to the vehicle stops running? There are several possibilities. The vehicle may be loosing a ground to the chassis. All of the onboard computers are getting main grounds from the chassis. The problem may be in the engine compartment or under the dash, depending on where it is loosing ground. The other option is that you have a faulty HEC module (Hybrid Electronic Cluster). Many times the anti theft is run through the HEC module. If the vehicle is sutting off it may be because the HEC module is either faulty or only the HEC module is loosing ground. Voltage surges are not common, but if they occur it is because of bad alternators or voltage regulators, which many times are in the PCM (powertrain Control Module).