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Ford Repair/1991 Ford Explorer

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Expert: Dennis W - 9/18/2007


Question
Hi there Denis,
    
    My name is Justin, my Explorer turns over but fails to start. I've checked the fuel pump relay and replaced the fuel pump. The vehicle will still not start. I've also checked the inertia switch, no dice. I'm out of options that I can think of of hand. If you can point me in a different direction that would be greatly appreciated.  


Justin

Answer
So you know there is spark? I cannot deduce from messages what has been done or tested. Assuming you have no fuel pressure thus this is the direction you went, then have you checked for power to the fuel  pump? Is the relay working? The relay is grounded by the PCM to turn it on. Checking for power at the inertia switch or fuel pump connector will confirm if the relay is working.

How are the battery cables and ground connections? Clean and tight?

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Dennis W

Expertise

I am a retired Ford master tech specializing in electrical, climate control, emissions, driveability, chassis, brakes, and any light repairs. Currently employed by an independent shop that appreciates my knowledge and abilities. Cannot answer transmission or parts questions, these are not areas of my expertise.

Experience

37 years of auto repair, diagnosis, and emissions testing, in service staions, independent garages, and 20 years with Ford dealers.

Organizations
National Street Rod Association (NSRA)
International Automotive Technicians Network (IATN)
IAMAW (retired)
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Education/Credentials
Riverside City College Automotive technology program
Ford Master Tech Certified Engine and Chassis Master (Over 500 hours)
ASE Certified in 7 categories
6 years training in Union 76 Pro-tech program

Awards and Honors
4-time Technician of the Year at Almaden Lincoln Mercury
Ford Master Tech
Union 76 Pro-tech Master tech

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