Check engine light after full throttle
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Cross-Country
Joined: Apr 2021
Posts: 76
Likes: 13
From: Nancy
Check engine light after full throttle
So something weird has been happening and I'm curious if anyone else has had the same issue. I haven't thrown parts at it but I'm pretty sure I have a failing o2 sensor (yay me right?). But something I've noticed over the past month is after about 2-3 full throttle pulls the truck throws a CEL for the rear o2 sensor, but ONLY after 2-3 sustained full throttle pulls (I'm assuming that's the cycle the computer needs in order to throw a code). If I drive like I normally do it shuts off after about 2-3 days and I don't have any other issues with the truck. No other symptoms such as fumes, smoke, misfires or odd idles. 5.4 3V with 196,000 miles.
Laughing Gas
Joined: Dec 2010
Posts: 1,200
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From: Timbuk3, MI
Bob Sagget...
Given that you opt not to provide it in the post, put your complete vehicle information (year, model, cab, trim, engine, wheelbase, _x4 drive, mileage, maintenance, modifications, etc., etc.) in your signature. *Eliminates playing 20 questions when/if a post is made pertaining to your vehicle.
» Edit Signature « *Don't forget to [ save ] it.
.
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Cross-Country
Joined: Apr 2021
Posts: 76
Likes: 13
From: Nancy
For some reason I thought it was filled out. But not to be smart but I would figure 5.4 3v and 196,000 in the 09-14 F-150 section would be a dead give away.
Either way...maintenance includes, within the last 50-60K miles; new plugs, coils, timing assembly, oil every 4500-5000 with full syn high mileage and quart of Lucas, transmission fluid change with filter, differential fluid change.
2010 Ford F-150 FX4 5.4 3V 196,000 miles.
No other symptoms and scan tool doesn't find any oddities when running live data such as running super rich or lean at WOT and problem resolves itself within a couple days or within at least 100 miles.
Aftermarket bits includes a Magnaflow exhaust, 2 inch spacer level.
Either way...maintenance includes, within the last 50-60K miles; new plugs, coils, timing assembly, oil every 4500-5000 with full syn high mileage and quart of Lucas, transmission fluid change with filter, differential fluid change.
2010 Ford F-150 FX4 5.4 3V 196,000 miles.
No other symptoms and scan tool doesn't find any oddities when running live data such as running super rich or lean at WOT and problem resolves itself within a couple days or within at least 100 miles.
Aftermarket bits includes a Magnaflow exhaust, 2 inch spacer level.
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