4.0L cutting out
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New User
Joined: Jan 2005
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From: Higley, AZ
4.0L cutting out
Truck: 97 4.0 ranger, 5 speed, 2wd, 4:10 gears w/33" tires
This problem just started after I replaced my transmissionwith a rebuilt 5 speed, not sure if it could be related. My truck runs excellent up till about 75mph then it will hesitate for a fraction of a second, almost like hitting a governor. Now the tricky part is that it does not do it everytime I hit a 75mph, sometimes it will let me go to 80mph before it does it. When I hit 75mph in 5th I am at about 2600 rpm and in 4th I am at about 3200 rpm. It will cut out in either 4th or 5th and I can only guess it would do it in 3rd. It is not consistant in its frequency (may happen once/minute sometimes five times....No CEL and no codes stored.
Any words of wisdom? Thanks for the help!
Scott<!--Signature-->
This problem just started after I replaced my transmissionwith a rebuilt 5 speed, not sure if it could be related. My truck runs excellent up till about 75mph then it will hesitate for a fraction of a second, almost like hitting a governor. Now the tricky part is that it does not do it everytime I hit a 75mph, sometimes it will let me go to 80mph before it does it. When I hit 75mph in 5th I am at about 2600 rpm and in 4th I am at about 3200 rpm. It will cut out in either 4th or 5th and I can only guess it would do it in 3rd. It is not consistant in its frequency (may happen once/minute sometimes five times....No CEL and no codes stored.
Any words of wisdom? Thanks for the help!
Scott<!--Signature-->
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Joined: Jan 2005
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From: Higley, AZ
The filter has about 10K miles on it....but, I would think it would take more fuel to run 4K rpm in 2nd gear than it would take to run 2,600 rpm in 5th gear.
It seems to be only speed related.....Is there any possibility that it could be related to the speed sensor in the diff?
It seems to be only speed related.....Is there any possibility that it could be related to the speed sensor in the diff?
Originally Posted by aquanaut20
just a guess,
fuel starvation,
Change your filter.........
fuel starvation,
Change your filter.........
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Joined: May 2006
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I'm just wondering if you had your speedo recalibrated after putting on the 33" tires? Your speedo is going to read slower than your actually going. Upping to 33's is going to change everything, especially at 75mph in 4th or 5th gear. If you had the same tire size with the old trans. and have the same diff. gears then I'd think it might possibly be the gearing in the rebuilt trans.
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New User
Joined: Jan 2005
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From: Higley, AZ
Fuel filter has been changed and plugs....engine is still cutting out. Does anyone know anything about the OSS in the tranny? I am wondering if it is sending a bad signal to the PCM causing the engine to cut out at a centain speed.....I am convinced that this is a speed related issue, but with no CEL on and no codes stored I am a little stumped. Thanks for the help!
