aliens8mycow

It doesn't cost anything - aside from a jumper wire on the test plug and a minute to watch the CEL flash codes at you...

Sean has a little how-to right here:
https://www.f150forum.com/f10/how-retrieve-trouble-codes-obdi-10907/

dewman

You can buy an OBD-I code reader and do it yourself. They will cost about $50 to $100, but will be worth the $ if you need to read codes in the future.

Just call me Sean

iTrader: (1)

You don't need to buy the code reader, it's a waste of money. You get the same codes with the scanner as you do with the free piece of wire.

oldmanb777

That works with OBD1, Does it work on OBD11? I thought it didn't work on OBD11.

Just call me Sean

iTrader: (1)

No, it doesn't work with OBDII. You must use a scanner for OBDII, but parts stores usually will read the codes for OBDII for free.

lotokids

Autozone will read codes free of charge.

obrian7

I had the same symptoms on my 1993 F-150, and it turned out to be the fuel pressure regulator. The symptoms were most prominent in stop-and-go situations (drive through, stop sign, etc.). Occasionally, I would have to two-foot it at the stop light to keep it from dying. A friend of mine also noted the exhaust smelled of fuel. Eventually, it got to the point where it wouldn't start, or would run only briefly before dying.

We replaced the coolant temperature sensor, spark plugs (which were fouled), O2 sensor, ... no luck. Replacing the fuel pressure regulator did the trick, though. Apparently, the fuel pressure to the injectors was running high, flooding the engine.

There's a port where you can monitor the fuel pressure, but I didn't have the equipment, so I just replaced the part (about $25). It requires disconnecting a vacuum line then removing 3 hex head screws (5/32"). That's the only hard part: the screws are upside down and there's much room to get a hex wrench in there. It's not really hard --- it just requires patience.

Hope this helps.

aluminumpuppy

Does yours have the 5.8?
Sounds similar to the problem I've been chasing on mine and I've replaced almost everything else; o2, TPS, EGR, Plugs, Cap, Rotor, Wires, IAC, ...
Where is the regulator located on the truck?

Thanks!

aliens8mycow

The regulator is on the fuel rail - driver's side, at the rear of the intake manifold. It's usually a silver, round thing with a vac line plugged into the top.

flareside93

mine had the problem before the cam swap and all the mechanical stuff rebuilt. so im going to have to say it was the FPR.