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Check engine light

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  #1  
Old 02-20-2006, 12:04 AM
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Check engine light
I drive a 98 F150 and my check engine light just came on. I have found no obvious problems, is there any kind of test i can do to find out what caused it to come on without taking it to a repair shop?
 
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Old 02-20-2006, 01:12 AM
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Go to Autozone and they'll scan the ECU for free. Get the codes and report back here. Get the actual codes and not what the guy says that they mean.

Mike
 
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Old 02-20-2006, 06:29 AM
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WRITE DOWN the codes.

Come back here and SEARCH using the code(s) as your keywords.

If you can''t find relevent information, then ask.

Steve
 
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Old 02-20-2006, 10:27 AM
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Is there any place that does the test other than Autozone? Closest autozone is 130miles away.
 
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Old 02-20-2006, 10:52 AM
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Call any auto parts store. Most likely they can scan the codes.

Mike
 
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Old 02-20-2006, 10:58 AM
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Do you refuel the truck with the engine running???????????
 
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Old 02-20-2006, 11:06 AM
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no- always shut my truck off. Got below freezing for a few days and came on- warmed up a little but it is still on.
 
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Old 02-20-2006, 03:23 PM
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Originally Posted by KennethKvittum
Do you refuel the truck with the engine running???????????
I do that every now and then and haven't had any problems
 
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Old 02-21-2006, 08:57 AM
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Originally Posted by ATC Crazy
I do that every now and then and haven't had any problems
Me too, and havn't noticed any issue other than the guage is a little off. What can this do?
 
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Old 02-21-2006, 06:40 PM
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There is a tube that picks up changes in the gsa fumes at the fill tube, that are sent to a sensor on the firewall, part of the emission control system, this will set off the check engine light.
 
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Old 02-22-2006, 06:41 AM
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Kenneth,

Haven't see it (yet). Could you tell us what the code is? Thanks.
 
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Old 02-22-2006, 07:40 AM
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Originally Posted by KennethKvittum
There is a tube that picks up changes in the gsa fumes at the fill tube, that are sent to a sensor on the firewall, part of the emission control system, this will set off the check engine light.
There are dozens of things that can cause a CEL.

Guessing at the cause without any codes is about like pi$$ing into the wind.

Steve
 
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