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Marty, European Car Expert
Category: UK Car
Satisfied Customers: 407
Experience:  ASE & Bosch Certified Master Tech. Over 30 years experience.
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Just jump started with leads wrong way around. All lights

Customer Question

just jump started with leads wrong way around.
JA: Will the headlights turn on? Is the battery fully charged?
Customer: All lights work warning lights etc on dash with it reconnected correctly but no attempt to start
JA: What is the model/year of your Ford?
Customer: Fiesta 1.4 52 plate
JA: Are you fixing your Fiesta yourself? What have you tried so far?
Customer: was going to try
JA: Anything else you want the mechanic to know before I connect you?
Customer: temp gauge light is showing hot and flashing
Submitted: 7 months ago.
Category: UK Car
Expert:  ddamato1986 replied 7 months ago.

Hello and thank you for choosing Just Answer. When you attempt to jump a car and connect the wrong terminals a number of issues can occur. Primarily the main fuses that provide power to the starter and fuel pump. Locate your fuse panel under the hood and check if any main fuses are blown. These will be higher amperage fuses 50 amp, 60 amp + etc.

Secondly, the temp gauge may have shorted when you attempted to jump the car. In this case either the sensor is faulty or the ECU ( engine computer) may have shorted during your attempt to jump.

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