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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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  #1  
Old 07-22-2014
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Sputtering?!

My 98 ranger engine failed so I put a 99 in replaced
Plugs/wires
Maf sensor
Fuel filter
Cleaned the throttle body
Idles fine but I can only drive it for about 10 mins before it start sputtering like crazy and looses all power to the point that it can barley keep the speed it's going.
Any ideas?
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Old 07-22-2014
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Reads like fuel pressure.

Rent or borrow a fuel pressure gauge, it screws onto a schrader valve(looks like tire air valve) in the Fuel rail.

You should have about 45-55psi before turning key on
key on 65psi
engine idling 62-72psi
Rev engine to about 2,000rpms and hold it there, pressure should stay above 62psi

There is also a chance the EVAP system is plugged up, fuel pump sends gasoline out of tank but tank is sealed, so negative pressure builds up in the tank and pump can't pump as much fuel out, so pressure stays high but flow is minimal.
Loosen gas cap and drive vehicle, see if problem occurs.

A few things happen after engine warms up, one is that the EGR system is activated once engine is warm.
Remove the vacuum line on the top of the EGR valve, plug that line.
Drive vehicle and see if problem occurs.
If EGR valve opens all the way at the wrong time it can cause engine to stall out

With both the above you will most likely a CEL(check engine light) that's OK, it will go away when you hook things back up
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Old 07-22-2014
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Awesome! I am definAtley going to do that tomorrow! I am so sick of taking it to the shop, cuz the last time I did they just told me it needed a tune up so I did that and guess what nothing happendbut I reall hope this does the trick, especially since I was rear ended by some idiot at 60 mph last Thursday totaling my only good car!
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Old 07-25-2014
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What were the results of the fuel pressure test?
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  #5  
Old 07-27-2014
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Fuel preasure is sitting at about 67 psi at idle same at 2000 rpms
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Old 07-27-2014
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The problem only seams to occur once my engine gets warm or just starting to get warm. My exhaust smells really funny
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Old 07-27-2014
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Could a bad catalytic converter be the problem?
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