98 Expedition skipping but no code
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Joined: Sep 2005
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From: Madison, NC
98 Expedition skipping but no code
my expedition has the 5.4. under acceleration the engine seems to be skipping or misfiring however it is not giving a code. check engine light is not on. It will blink a few times then go off. anyone know what this could be? I dont want to go to the stealership..
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There's at least a couple of threads on similar symptoms including flashing CEL - one of them mine. Long story short, I bought one new COP, installed it on 8 then rotated COPS 1 at a time until getting to the bad one..#3.
Problem may be COP or just the boot, but I found no sure way to check. That #3 COP tested at the right values, so as far as I'm concerned the only check is to drive it.
Problem may be COP or just the boot, but I found no sure way to check. That #3 COP tested at the right values, so as far as I'm concerned the only check is to drive it.
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From: MA
Approximately $50 for a coil pack.
I was lucky enough to get my Exp to throw a code, but it took me several weeks of trying and finally I was able to get it to throw a code at 75 mph, but the only way I could retreive the code was to drive with the scanner plugged in. For more details do a search of some of my postings around the first of 2006.
I was lucky enough to get my Exp to throw a code, but it took me several weeks of trying and finally I was able to get it to throw a code at 75 mph, but the only way I could retreive the code was to drive with the scanner plugged in. For more details do a search of some of my postings around the first of 2006.
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Joined: Sep 2005
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From: Madison, NC
It turned out to be my #4 cop. It looked corroded and burnt so I changed it first and now the truck runs fine. (I also have a F250 with a V10 so I stole a cop from it). I must say getting to #4 is a pain in A#$
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From: New Mexico
Originally Posted by rbnandm
my skipping seem to start after i had the plugs and wires changed ???
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