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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #1  
Old 11-07-2009
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rev limiter

why does my truck only let me rev it to 3200 ? extremely annoying. there is no way to change this is there?
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  #2  
Old 11-07-2009
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if you put it in drive you can rev it much higher
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Old 11-07-2009
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i was wondering the same, but only for reverse.....hard to rock out of a hole when you cant get the tires moving
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Old 11-07-2009
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Ford must know something about these engines that we don't. These engines prolly are too much to handle so they had to put a limit somewhere so normal humans can handle it.

EDIT: (sarcasm)
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Old 11-07-2009
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haha well yea if im floorin it or kickin up some mud it revs quite nice but i dont like how i cant rev it up in neutral
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Old 11-07-2009
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its to keep you from doing that lol
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  #7  
Old 11-08-2009
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its a rev limiter to stop people from revving the **** out of them. can be taken off with any hand held tuner, same with the 93-95mph top speed limiter.
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Old 11-08-2009
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Get a tuner
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Old 11-08-2009
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i know it may sound wierd and i dont know what exactly happed but i got burried in the sand yesterday and tried to rock out and when the tires started spinning in reverse it bounced off the rev like 3200 i guess and stalled and its an automatic lol i didnt think it was posible to stall an automatic.
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  #10  
Old 11-08-2009
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automatic transmissions limit reverse to 3200 rpm?

damn, back i my standard transmission days i would rip backwards at over 5k
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Old 11-08-2009
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Quote:
Originally Posted by Spc_Austin View Post
i know it may sound wierd and i dont know what exactly happed but i got burried in the sand yesterday and tried to rock out and when the tires started spinning in reverse it bounced off the rev like 3200 i guess and stalled and its an automatic lol i didnt think it was posible to stall an automatic.

i know that if the truck rolled forward at all while in reverse the truck will automatically shut off.
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Old 11-09-2009
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This is why i have a manual trans :)
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  #13  
Old 01-12-2010
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Originally Posted by 04DSGMike View Post
its a rev limiter to stop people from revving the **** out of them. can be taken off with any hand held tuner, same with the 93-95mph top speed limiter.
How would i do that? i have a sct tuner from bama chips.
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  #14  
Old 01-12-2010
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I've been curious about this one. M truck doesn't have a rev limiter even though it's an auto. Everything on it is stock. But it rev's all the way up to 5k
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Old 01-12-2010
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maybe they didnt limit the OHV 4.0's. who knows
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Old 01-12-2010
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Quote:
Originally Posted by Igobytwitch View Post
I've been curious about this one. M truck doesn't have a rev limiter even though it's an auto. Everything on it is stock. But it rev's all the way up to 5k
Does it go past it? Usually rev limiters are a little higher than the top of the RPM scale. I'm 99% sure you truck has one. They have been using limiters since the early years of EFI. Why? Because EFI systems will continue to supply fuel to the engine at mostly whatever RPM the engine will rev to before falling apart so there has to be an ignition cut or fuel cut to prevent over revving. Even stock carbed engines had a limiter, sort of. It was more like the carb would reach its maximum fuel flow capability.

Last edited by whippersnapper02; 01-12-2010 at 12:04 PM.
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  #17  
Old 01-12-2010
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my 98 ranger didnt have one but my 01 does. mine doesnt have it while in reverse just nuetral
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  #18  
Old 01-12-2010
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Every single vehicle built within the last 25 years or so has some kind of engine speed limiter from the factory.....every last one of them. Put the trans into 1 and punch it till it pings the limiter. Unless someone went in with a tuner and defeated it, there's a limiter.
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Old 01-12-2010
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Is there a way to adjust the rev limiters?

Or are they permanently set based on the engine?
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Old 01-12-2010
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You can change yours with a tuner. No point since there isn't any power up there and the risk of hurting your engine.
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  #21  
Old 01-13-2010
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With an SCT tuner, when loading a tune, choose adjust options, and there you have the park/drive RPM limit setting. But why would you want to rev the **** out of it in neutral? Thats not good for the motor.
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  #22  
Old 01-13-2010
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I was just curious, I've been told before that removing the rev limiter will mess up your shift timing if you have an automatic.

But I guess that tuner lets you adjust certain rev limiters
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  #23  
Old 01-13-2010
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i dont have one
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  #24  
Old 01-13-2010
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Quote:
Originally Posted by 01RangerEdge View Post
I was just curious, I've been told before that removing the rev limiter will mess up your shift timing if you have an automatic.
Nothing to do with shift timing and everything to do with exceeding the mechanical capabilites of the engine.
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  #25  
Old 01-13-2010
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Quote:
Originally Posted by bergs View Post
Nothing to do with shift timing and everything to do with exceeding the mechanical capabilites of the engine.
KABOOM
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