2.9 dies under load
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More Turbo
Joined: Sep 2007
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2.9 dies under load
Hey all! i got a strange problem with my 86 ranger 4x4 auto, was coming home from work (i have racks and tool boxes on it) and was coming into a grade and when pushing on the throttle it started dying let up a little and it would at least climb the grade slowly, stomp the pedal down and she would almost come to a stop almost like starving for fuel. i thought the cat might be plugged so i removed it and gutted it out. put it back in and it ran great until today again merging into heavy traffic i pushed the pedal down and it just went waaaaaaaaaa i think you motor guys know what im saying. i put a new fuel pump in the tank about 10k miles ago and the frame pump too. im open to suggestion. thanks
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Joined: Jun 2010
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The problem could be the fuel pressure regulator.
Does your vehicle have a schrader valve on the fuel rail? If so, I'd check the fuel pressure first & make sure there's enough flow.
Several years ago I had a similar problem on my 86 Ranger Supercab V6: the fuel pressure regulator was bad.
If my memory is any good, I believe it was stuck closed, so the truck was starved for fuel.
Or it could be ignition related. My Escape recently had a bad hesitation & poor running problem under load, but it seemed to run okay when driven mildly.
Replacing the ignition coil solved the problem (there was no trouble code specifically for the coil. It was just a guess after trying other stuff.).
Does your vehicle have a schrader valve on the fuel rail? If so, I'd check the fuel pressure first & make sure there's enough flow.
Several years ago I had a similar problem on my 86 Ranger Supercab V6: the fuel pressure regulator was bad.
If my memory is any good, I believe it was stuck closed, so the truck was starved for fuel.
Or it could be ignition related. My Escape recently had a bad hesitation & poor running problem under load, but it seemed to run okay when driven mildly.
Replacing the ignition coil solved the problem (there was no trouble code specifically for the coil. It was just a guess after trying other stuff.).
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palehorse13
1973 - 1979 F-100 & Larger F-Series Trucks
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Sep 23, 2012 04:27 PM
