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-   -   Clutch in:No RPM Drop (http://www.fordrangerforum.com/general-tech/14054-clutch-rpm-drop.html)

spkrman005 07-03-2010 04:44 PM

Clutch in:No RPM Drop
 
Has anyone gone through this trouble? When shifting gears,when I push clutch in,rpms do not drop,even sometimes climb. Sometimes when driving in 1st or 2nd gear,cruise control kicks in,even though I have none!!

ranger5572 07-04-2010 01:27 PM

Re: Clutch in:No RPM Drop
 
Sounds to me like the throttle cable may be sticking and keeping the throttle open. Check your cables from the pedal to the throttle body and then have a friend pump the gas as you watch under the hood. Just watch the cable pulley dealio up by the throttle body and see if it looks like it gets hung up a bit when he lets off the gas.

Here's my thought process:

If you push the clutch in and the RPMs go up, that means youre still giving it gas when you shouldn't be. Either youre riding the gas when you shift and dont realize it or the cable is sticking somewhere and its still getting some throttle that way while you shift.
If you have a "cruise control" kicking in w/o having that option installed, you've got whats called "throttle lock". On Army HMMWVs (Humvees) it is used to hold the throttle open to warm the engine up faster. A warning sticker inside says "do not use the throttle lock as a cruise control / throttle will not disengage when brakes are applied" Sounds to me like your cable is sticking somewhere. Fix the cable issue, lose you're "cruise control". problem solved

spkrman005 07-05-2010 11:30 PM

Re: Clutch in:No RPM Drop
 
Thanks for the reply James!!

ranger5572 07-07-2010 08:33 PM

Re: Clutch in:No RPM Drop
 
Hope you're having some luck figuring it out, dude. Let me know what you find out.

sbristow84 12-23-2010 12:13 PM

Re: Clutch in:No RPM Drop
 
NEWB here with the same problem on my 1994 Ranger. Any luck fixing this yet?

edgeman4.0 12-23-2010 12:22 PM

Re: Clutch in:No RPM Drop
 
i would also check for a vacuum leak..

pooleo 12-23-2010 12:33 PM

Re: Clutch in:No RPM Drop
 
IAC valve.

sbristow84 12-23-2010 12:41 PM

Re: Clutch in:No RPM Drop
 
It was the IACV. I took it out and cleaned it really good. All is well now

sbristow84 12-28-2010 08:39 PM

Re: Clutch in:No RPM Drop
 
symptoms are back.

pooleo 12-28-2010 08:59 PM

Re: Clutch in:No RPM Drop
 
replace IAC.

terryduanemiller 12-28-2010 11:24 PM

Re: Clutch in:No RPM Drop
 
EGR valve, common on the 4clangers.. cheap fix? try this:

TEST: pull the line off and block the vacuum... then drive the vehicle

FIX: take a BB (yes like a BB gun) put it inside the vacuum fitting to EGR and press the vacuum line back on the EGR.. the BB is to large to fall into EGR and to Large to get sucked into engine..

sbristow84 12-31-2010 05:18 PM

Re: Clutch in:No RPM Drop
 
Quote:

Originally Posted by pooleo (Post 279426)
replace IAC.

anybody got a good place for parts? Autozone wants $120

terryduanemiller 12-31-2010 05:21 PM

Re: Clutch in:No RPM Drop
 
Quote:

Originally Posted by sbristow84 (Post 281931)
anybody got a good place for parts? Autozone wants $120

, I have one.. $25.00

sbristow84 12-31-2010 05:55 PM

Re: Clutch in:No RPM Drop
 
pm replied

pooleo 12-31-2010 06:20 PM

Re: Clutch in:No RPM Drop
 
junk yard. I usually stock up on them when I go down there.


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