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  #1  
Old 03-25-2013, 01:51 AM
RobElcombe RobElcombe is offline
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Exclamation engine stays at high revs when shifting for 2 secs before returning to idle

When shifting up a gear in a 2012 3.2l manual Ranger the revs only drop to 50% of the previous rev range for 2 -3 seconds before dropping to idle.

Local Ford mechs claim this is normal but going around a round-a-bout in the wet the rear end slid out under acceleration, no problem normally just let off the accelerater and all is good, except when the revs stick for a short period of time, the back stays out.

Thankfully I was able to ride the slide and the road was empty but if somebody was to hit the brakes now that would be a differnt story.

Is this normal to other Ford Rangers? Try accelerating up a hill to 3,000 rpm take your foot off the accelerator and depress the clutch and let me know it the revs reduce and hold at about 2,000 rpm for a short period of time before dropping to idle.

If this is normal is it possible to stop it so that the revs drop to idle when you take your foot off the accelerater and depress the clutch, it would make for a smoother gear change if nothing else.

Last edited by RobElcombe; 03-25-2013 at 10:16 PM. Reason: incorrect data
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  #2  
Old 03-25-2013, 04:03 AM
doshus doshus is offline
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Default Re: engine stays at high revs when shifting for 2 secs before returning to idle

Does your clutch fully disengage? Do you feel the gears grab?
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  #3  
Old 03-25-2013, 10:18 PM
RobElcombe RobElcombe is offline
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Default Re: engine stays at high revs when shifting for 2 secs before returning to idle

Yes the clutch disengages and the gears do grab while changing during the time the revs are holding at the higher rev range.
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  #4  
Old 03-26-2013, 01:44 AM
doshus doshus is offline
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Default Re: engine stays at high revs when shifting for 2 secs before returning to idle

Honestly I suspect your pilot bearing is seizing on your transmission input shaft. You could also need to bleed your slave cylinder a bit...Your clutch can still be engaging slightly even if it lets you shift. My point is that your transmission might still be turning your crankshaft until they equalize in rpms...
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  #5  
Old 03-30-2013, 03:36 PM
RobElcombe RobElcombe is offline
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Default Re: engine stays at high revs when shifting for 2 secs before returning to idle

Clutch full disengaged, gears snatch because when changing gear while the engine revs are above idle a slight pressure on the accelerator increases them further and the Ranger lurches when the clutch engages.

I've been told I need to adjust my driving style and not use the accelerator while changing gear. But this forces three driving style on me, one when the vehicle does not exceed 1200 RPM and the engine revs return to idle ( seesaw the accelerator and clutch) one when the engine revs exceed 1200 RPM and the engine revs drop back to 50% of the previous rev range (do not touch the accelerator at all while changing gear until the clutch is fully released, a pain when towing or going up a steep incline) and a third one when in traffic and needing to use the engine to brake, when the revs remain at 50% you do not slow down and if this coincide with an up change of gear you actually speed up.

I wonder if there would be any down side to clamping the vacuum pipe from the modulator valve in a manual.
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  #6  
Old 04-02-2013, 10:07 PM
KE94Ranger KE94Ranger is offline
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Default Re: engine stays at high revs when shifting for 2 secs before returning to idle

what motor do you have? in my stock 2.3l it actually rev'd higher when i would push in the clutch... i cleaned the throttle body and it fixed it.
i would try that before you spend a crap ton of money on something your not sure about

----------

leave the truck running and spray WD-40 and i used break/carb cleaner at the same time cleans it up like a champ.
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  #7  
Old 04-02-2013, 11:35 PM
thatranger thatranger is offline
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Default Re: engine stays at high revs when shifting for 2 secs before returning to idle

Lets see, I had a seized throw out bearing, and it didn't act that way, and when I mean seized, I mean it was like another clutch, but it always rotated at the engine's rpms, not the road speed.

When I let off the gas, my revs will drop fast, however it does 'stop' around 50%. I wouldn't stay it holds there, but lets say if I shift at 3,000 rpms, it'll drop to like 1,700 and drop down to 1,400. While inbetween 1,700 & 1,400 I have notice it will drop revs fast at 3,000, but once it hits 1,700 it slowly drop to 1,400 (only like 1/2 to 3/4th of a second) then drop at normal speed to idle

So pretty much, yes, it'll get to like "50%" rpm then slow down a LITTLE to 40% of rpms, then drop revs at normal speed to idle.

Is it 2-3seconds? Hell no. I'm not sure on my numbers, or at which rpms it'll hold for a split second, but I'm pretty sure my engine does the exact same thing, and its the 3.0 v6 engine.

Just note, Inline 4 engine drop revs faster (I believe) so maybe its tune to hold longer then a v6 to make up for revs dropping fast. Just a guess.
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2002 Ranger 3.0 XLT | 5Speed | Flareside | 2wd | 3.73open |
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Quote:
"You rev it, and rev it, and rev it until the valves come out and dance on top of the bonnet. And then you change gear" - James May
Quote:
"9,000rpms into third!"- Jeremy Clarkson
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  #8  
Old 04-03-2013, 12:01 AM
thatranger thatranger is offline
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Default Re: engine stays at high revs when shifting for 2 secs before returning to idle

Quote:
Originally Posted by KE94Ranger View Post
what motor do you have? in my stock 2.3l it actually rev'd higher when i would push in the clutch... i cleaned the throttle body and it fixed it.
i would try that before you spend a crap ton of money on something your not sure about

----------

leave the truck running and spray WD-40 and i used break/carb cleaner at the same time cleans it up like a champ.
Quote:
Originally Posted by RobElcombe View Post
Clutch full disengaged, gears snatch because when changing gear while the engine revs are above idle a slight pressure on the accelerator increases them further and the Ranger lurches when the clutch engages.

I've been told I need to adjust my driving style and not use the accelerator while changing gear. But this forces three driving style on me, one when the vehicle does not exceed 1200 RPM and the engine revs return to idle ( seesaw the accelerator and clutch) one when the engine revs exceed 1200 RPM and the engine revs drop back to 50% of the previous rev range (do not touch the accelerator at all while changing gear until the clutch is fully released, a pain when towing or going up a steep incline) and a third one when in traffic and needing to use the engine to brake, when the revs remain at 50% you do not slow down and if this coincide with an up change of gear you actually speed up.

I wonder if there would be any down side to clamping the vacuum pipe from the modulator valve in a manual.
Long Version
Uh, I've found using the accelerator makes for smoother shifts. You should keep pressure on the accelerator, as you push in the clutch 1/4 you should lessen the gas by 1/4th of what it is, once clutch is pushed in 1/2 way, you should have 1/2 the gas that you started with. Then when you get to 3/4 of clutch in, you should have 1/4th of remaining gas. Once the clutch is all the way in, you should have very slight pressure on the gas like an 1/8 of what you started with. However I don't know if my 1/8 is just slack or if I'm really giving it 1/8 of the gas I started out with; try it both ways. You revs should drop at normal speed with the '1/8' of gas then you shift gears, and release the clutch while giving smooth gas.

I've found this to allow you to shift very smoothly, and is the easiest/lightest/best way for the transmission to shift. Gears should just come out perfectly and go into the next gear perfectly. Better then not doing this.

I have found this to be true on my Ranger, and on my brothers 2011 4.0 5spd. I tend to shift way more smoother then my brother. One out of 10 shifts my brother's tranny gets 'mad' and will shift rough out of gear. A similar example that you can relate to is: you place your hand on the shifter, not moving it at all, but weight of the hand is on it, then push in the clutch and shift, it'll shift rough out of that gear. That only happens when my brother is driving, and his pretty good at driving a manual.

Do I think that is the cause of my brothers rough shifts? No, I feel the truck be disconnected from the engine, knowing for a fact its 'unloaded'. Also at the same time I see him push the clutch in, then places his hand on the shifter and moves it.

I haven't tried this on my truck, shift I 'keep' on the gas while changing gears, but I'm pretty sure my transmission will do something similar, be a little rougher to shift if I didn't use my way.

Some people will say that what I'm doing/saying is bullshit since the clutch is disconnected it shouldn't matter if it'll shift smoother if you give gas while pushing in the clutch.

I've tried teaching/telling my brother to do this, so it'll shift smoother, he kinda does it (not 100% right) and it shifts a little smoother. However he wont practice this. I guess he thinks he shouldn't have to do special shit to shift smoothly on his brand new ranger. To myself its second nature, like driving a manual, I didn't read this from anywhere, just recently notice that I shifted this way.

Short Version
In other words, while you let the clutch out you give it smooth gas (more, then more). Therefore while pushing in the clutch you reduce gas (less, then less) then change gears.

However I'm 100% sure my way works, and been told by a number of people, young, and older (who driven 5speeds for 30+ years) that I shift smoother then anyone they know. And question how I shift so smooth. To myself its second nature, like driving a manual, I didn't read this from anywhere, just recently notice that I shifted this way.
__________________
2002 Ranger 3.0 XLT | 5Speed | Flareside | 2wd | 3.73open |
__________________________________________________

Quote:
"You rev it, and rev it, and rev it until the valves come out and dance on top of the bonnet. And then you change gear" - James May
Quote:
"9,000rpms into third!"- Jeremy Clarkson

Last edited by thatranger; 04-03-2013 at 12:06 AM.
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  #9  
Old 04-07-2013, 12:32 PM
jarrod27 jarrod27 is offline
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Default Re: engine stays at high revs when shifting for 2 secs before returning to idle

Are you saying that your RPMs stay high when you take it out of gear untill you put it into the next gear? My snap on solus says that you to have the latest update installed into your ECM. Find a shop or dealer that can update your ecm and it should take care of it.
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  #10  
Old 04-10-2013, 10:08 PM
RobElcombe RobElcombe is offline
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Default Re: engine stays at high revs when shifting for 2 secs before returning to idle

3.2l 5 cyl
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