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  #1  
Old 11-01-2003, 03:02 PM
Kingsun Kingsun is offline
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5.4 types??

I've got an 02 F150 lariat s'crew w/ a 5.4.. Been researching and need some info..i.e. 5.4 v8 cng sohc 16v f1 engine, 5.4 v8 flex sohc 16v fi engine, 5.4 v8 sohc 16v F1 engine... How do I find out which one I have ??? How do they differ?? Thanks and this is my first truck and first V8 and I'm trying to learn more about it..Thanks in advance for any replies>>
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Old 11-01-2003, 03:50 PM
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The most common is the regular 5.4L. Check your vin # It should have a "L" in it for the engine code.
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Old 11-01-2003, 06:34 PM
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CNG- Compressed Natural Gas
Flex- Flex fuel CNG/ LPG or regular unleaded (the engine is designed with the capability to take one or the other)

Either one of these will have stickers in various locations (door jamb, fuel filler door).

The only trucks that came with the flex fuel or CNG optioned 5.4 was the 7700 GVWR F150s. These are usually fleet vehicles. Your Supercrew has the 5.4L unleaded gas version.. or as you put it "5.4 v8 sohc 16v F1 engine."

-Kerry
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Old 11-02-2003, 08:52 AM
Kingsun Kingsun is offline
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Thank you, sirs!!! Now, I'm learning more 'bout my truck!!
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Old 11-02-2003, 11:42 AM
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Just read thru this site. You will find all of the good and bad things about it. Just keep in mind, the horror stories that you read about in these forums only describe a small % of the vehicles out there so don't be scared away from your truck.

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Old 11-04-2003, 10:30 AM
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Talking

i have a light duty 250 with the "Z" code dual fuel 5.4 engine, see other post about 5.4 engine noise. im have it tore down right now. has the factory propane and gas. it was a fleet state of texas vehicle.
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Old 11-06-2003, 01:15 PM
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I thought that the Flex Fuel 5.4L was supposed to run on E85 or Regular gas, and not LPG-CNG?

Maybe I'm just confusing it with my wifes Taurus with the Flex Fuel 3.0l that can run on E-85 or regular gas.
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Old 11-06-2003, 09:57 PM
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You know Super, I think you're right. What's weird, though, is the option sheet I'm looking at doesn't say a thing about the flex fuel option, only a CNG/Gas or an LPG/Gas and they were optional (meaning: could be ordered?) in all F150s in 2002 and 2003. I'm thinking there was a detuned 5.4 Flex version that a lower rated hp/torque than the "Z" code or "L" coded engines.

I'll look it up at the Ford Fleet sales site (but it only goes back to 2000) and look around.... may be I'll pull up some info.

-Kerry
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Old 11-06-2003, 09:57 PM
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16v, 2009, 54, 54l, cng, engine, fi, flex, ford, fuel, gasoline, sohc, specs, truck, v8

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