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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 07-05-2010
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Random no start

I have a 03 Edge 3.0 with 5 spd manual. I bought this truck 3 mo ago and the truck has had a no start condition where it cranks and starts to fire but won't run. I had it towed home a couple days ago, put a charger on it and it started after 45 min charge. The positive term had some corrosion on it so I cleaned everything and load tested the battery and checked the alternator. All test ok. This is the second occurance, it ran fine for 3 months. Anyone have this happen to them????
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Old 07-05-2010
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If the battery and alternator checked out good, maybe you should check the starter and spark plugs.
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Old 07-05-2010
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Mine was doing that for a while, i replaced the fuel pump and filter and it hasn't done it since. Fuel lines might just be getting clogged up
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Old 07-05-2010
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does yours have the coded key? i know when a coded key starts to go it will cause an occasional no start
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Old 07-05-2010
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I tried both keys; the original and the dealer copy. That was my first suspicion. Just bought new plugs/plugwires. Hopefully that will cure it.
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Old 07-10-2010
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I decieded to hold off on the plugs and wire replacement for now. Cleaning the terminals on the battery seems to be the fix. I had a similar teeth clenching hardstart issue with my 2005 Taurus 3.0; the voltage would drop while the starter was cranking. The ECU on these Fords must be REAL voltage sensitive. A new battery cured the Taurus. If this occurs again I'll try the plgs/wires and keep the post current until I'm confident the trbl is fixed.
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Old 08-27-2010
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It happened again. This time there was no fuel pressure at the fuel rail. When I turned the ignition to the on position I didn't hear the fuel pump cycle. My question is this; If the securilock PATS unit doesn't read the key or it is malfunctioning, does the PATS unit disable the fuel pump? The dash sequence with the "theft" flashing light indicates that it is reading the key ok. (it goes out a couple seconds after I turn on the ignition) The truck started the next morning. Does anyone know if the ground connection for the fuel pump is in the area of the tank, or is it connected through the wiring harness?
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Old 08-27-2010
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It's an '03 , It has some wear on it.
Fuel pump relay , in the fuse block under the hood is the most likely culprit.
Second place to check is under the driver's side , inside the frame rail , the area under the driver's seat. Look for a square plug with a bolt in the center. Remove the bolt , unplug the connector , spray contact cleaner in both sides and reconnect.
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Old 08-28-2010
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I changed the relay, I'll clean the connector today. How about the fuel pump connector on the crossmember above the fuel tank?
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Old 09-03-2010
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Well I tip my hat to igobytwitch. The fuel pump was the culprit. I have learned alot about the fuel system on this Ranger. The PATS system supplies the voltage to the common pin on the fuel pump relay, and the PCM turns the relay on, if the PCM does not sense the motor turning via the crank/cam sensor the PCM disengages the relay until the motor is running. I suggest that if you are going to replace a fuel pump taking the bed off is the way to go. On a side note, if you ever wonder if your coded key is working, pull the fuel pump relay and measure the voltage at the common pin of the relay socket. 12v your good, no voltage your key or the PATS system is in trouble. All the tips helped alot. Thanks
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Old 09-26-2010
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uggg... this is my problem!! which pin is common on relay?? no voltage to pnk/bck wire. checked under driver seat plugs looks brand new clean and lubed. suspect crank sensor and i have tried 2 keys already...dont think its security
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  #12  
Old 09-27-2010
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odered a new fuel pump and strainer from Rock...99.00 fedex. hope this will fix my 41000 mile truck!
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