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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 10-18-2010
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Engine losing power

94 4x4 3.0 Sometimes when I go to take off the engine will cut off completely or lose power for a second and almost cut off. It sat for a long time before I bought it, any thoughts?
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Old 10-18-2010
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sounds like a bad MAP/MAF sensor...is your CEL on
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Old 10-18-2010
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Nope. No warning lights at all-Knock on wood- I just remembered that its only when its on a 1/4 tank or so.
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Old 10-18-2010
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well that could be a fuel pickup problem...id check the filter and pump
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Old 10-18-2010
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thats what I was thinking but didnt want to hear it.......Wonder if I can just take the bed off instead of dropping the tank, i hate dropping gas tanks.
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Old 10-18-2010
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you prolly could but id get a can of PB blaster to help break those 16 year old bolts loose lol
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Old 10-18-2010
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our shop works on diesel, that PB is gold lol.
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Old 10-18-2010
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yep lol cant go without it
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Old 10-22-2010
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Correction.....It only does it now when I make a hard turn from a dead stop, it will shut off, or sometimes when I take off at normal speed...wtf fuel pump and filter are fine.
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Old 10-22-2010
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that sounds like a pickup problem
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Old 10-22-2010
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right but theres no trash in the tank, fuel pump seems to be op fine and the filter isnt really dirty... I changed the fuel filter in the line the other day and its doing it less now, but still doing it.
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Old 10-22-2010
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might have a clog further up in your lines...check the fuel rail
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Old 10-22-2010
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ugh this shi* is a headache, now the transfer case is leaking to. SOB lol.
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Old 10-22-2010
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plugs, wires, coil ?
or a combination of the three ?

it sounds very similar to what was happening to my ranger when I had a bad plug.
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Old 10-22-2010
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I just changed the plugs and wires like 2 weeks ago...
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Old 10-23-2010
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check to make sure none of them have hairline cracks, or a loose post, this was my problem and I changed mine very recently.

if nothing is wrong with plugs/wires, then check to make sure the coilpack is good.
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Old 11-26-2010
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All right, did all that, no coil pack- has a distrubutor but the cap n rotor are fine. Its getting to be a problem, It cuts off in the intersection if I take off to fast, a buddy of mine said its the timing, what do you guys think? Heres the total problem:

Taking off too fast, putting the RPMS above 3k on take off it will shut off. Hard Turn from a dead stop it will shut off.

Checked: Fuel pump, Filter, Distributor cap n rotor, Plugs and wires. Oil is fine, tranny is fine.
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Old 11-26-2010
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Check the connector to the inertia switch for the fuel pump.
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Old 11-27-2010
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Did, all making good contact not loose. Anything to do with the fact that my EGR system is rigged not to work?
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Old 11-28-2010
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check your fuel pressure regulator for a cracked vacuum hose or a sluggish regulator. it increases or decreases fuel pressure based on demand set by vacuum. if its not working you may be choking out or flooding.
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Old 11-28-2010
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Did your problem start when you dissabled the EGR?
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Old 11-28-2010
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Idk, I wasnt the one to take it off, im thinking the previous owner had. Also thinking there might be a hole in the exhaust manifold where he tried to JB weld all the holes shut..... so Im going to take it off tom and check.
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Old 11-28-2010
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exhaust leaks would not cause your problem, they would cause noise and maybe a CEL what holes are in exhaust manifolds? did it have an AIR system on it before? I would get a fuel regulator from a JY and try that as well as reconnect the EGR system to normal function. you might try disconnecting the fuel regulator and seeing if it acts differently or the same. I had a bad regulator on an explorer a few years back but i cant remember just what the symptoms were other than bad milage. not sure if it popped a code or not. The connection for the ground at the battery for the fuel pump may not be good and you are getting a low fuel pressure as well has it had the ground terminal replaced before? if not i would try that too it just costs a couple bucks to replace the terminal and see.
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  #24  
Old 11-28-2010
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For engines to run they need fuel fire and compression since it try's to run then fire and compression are there pointing to a fuel delivery problem.
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