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Check engine light after changing spark plugs, stays on,

Customer Question
Check engine light after...

Check engine light after changing spark plugs

Mechanic's Assistant: Does the light stay on, or does it blink?

Stays on

Mechanic's Assistant: What is the model/year of your Ford?

1992 F15 4.9

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Yes

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Does not come on unlit about a min of driving

Submitted: 10 months ago.Category: Ford
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Answered in 5 minutes by:
9/21/2017
Ford Mechanic: Ron, ASE Certified Technician replied 10 months ago
Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 25,022
Experience: 23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
Verified

Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.

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Ford Mechanic: Ron, ASE Certified Technician replied 10 months ago

Have you scanned the computer system to see what the fault code and or codes are that should be setting when the light comes on?

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Customer reply replied 10 months ago
no just happened, was fine until I changed the plugs, I've only change a thousand plugs in my life
Ford Mechanic: Ron, ASE Certified Technician replied 10 months ago

You may have knocked something loose but if its not obvious then pulling the code and or codes will help us determine what is causing this and we can narrow it down from there.

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Customer reply replied 10 months ago
you haven't told me anything new, everything is tight just like when I started. Changed the plugs the same way for 50 yrs. so go by a tester right?
Ford Mechanic: Ron, ASE Certified Technician replied 10 months ago

Well there are many things that can cause the check engine light to come on and unfortunately I can not guess . The next step has to be to pull the fault code and or codes and once we have them we can determine the cause.

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Customer reply replied 10 months ago
not your fault but tell your boss thanks for taking my $5
Ford Mechanic: Ron, ASE Certified Technician replied 10 months ago

Im sorry I can not tell you what you need with simply guessing and I have been paid nothing at this point and you can also contact customer service and they will refund any money you are owed.

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