downshifting hard... - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 01-26-2005
Member
Thread Starter
 
Join Date: Nov 2004
Location: Danville, VA
Posts: 2,664
downshifting hard...

i was going 60 on the way home tonite...and i let off the gas...and about 1 second after i let off, my truck dropped from 2k RPM to about 1.3kRPM....along with 2 rather loud bellows from the turn down exhaust...

is this normal downshifting or is something up?

i repeated this several time and each time it did the exact same thing....
Reply With Quote
  #2  
Old 01-26-2005
LILBLUE04FX4L2's Avatar
Member
 
Join Date: Jun 2004
Location: Exit 105 New Jersey
Posts: 2,409
maybe not enough back pressure and you had some unburned fuel in there too
Reply With Quote
  #3  
Old 01-26-2005
Member
Thread Starter
 
Join Date: Nov 2004
Location: Danville, VA
Posts: 2,664
yeah...i recently put in my un-modified airbox and silencer....i never ever noticed it with my modded one

and my exhaust is just a flowmaster 40 series on stock pipes except for a 2" turn down

also there is a semi-hard jolt each time the exhaust makes a bellow....
Reply With Quote
  #4  
Old 01-27-2005
FireRanger's Avatar  
Join Date: May 2004
Location: CT
Posts: 0
Well, that's definately not a downshift. If your truck downshifted itself, the RPM's would shoot way UP.
Reply With Quote
  #5  
Old 01-27-2005
Skyjacker_44's Avatar
Member
 
Join Date: Jul 2004
Location: Hillsboro,Texas
Posts: 1,079
dude when i down shift right now the rpms stay up i miss my truck jerking me around cause when i'd down shift going threw the na-bor hood.. it'd pop and all kinds of good stuff to wake up the old folks
Reply With Quote
  #6  
Old 01-27-2005
loneFX4's Avatar
Member
 
Join Date: Jan 2005
Location: Summerville,SC
Posts: 955
yea...since i put the offroad y-pipe on i love downshifting even more then i did when i had the cat back flowmaster 40 with pre 2.5" pipes and 2.25" pipes after the muffler. if you have a 4.0L i recomend my settings.
Reply With Quote
  #7  
Old 01-27-2005
karrbass4life's Avatar
Member
 
Join Date: Nov 2004
Location: Cincinnati, Ohio
Posts: 3,072
I got an auto so.... yeah... i dont want my truck to sound like it has bad gas... and have to drop beano into the tank... so imma just go with the layout i have in my head...

Um and i got a question... X pipes are legal right?

Last edited by karrbass4life; 01-27-2005 at 11:32 AM.
Reply With Quote
  #8  
Old 01-27-2005
n3elz's Avatar
RF Veteran
 
Join Date: Jun 2004
Location: Kennett Square, PA
Posts: 10,620
Quote:
Originally Posted by TippnOver
i was going 60 on the way home tonite...and i let off the gas...and about 1 second after i let off, my truck dropped from 2k RPM to about 1.3kRPM....along with 2 rather loud bellows from the turn down exhaust...

is this normal downshifting or is something up?

i repeated this several time and each time it did the exact same thing....
As per previous comments, your truck upshifted, which it will do when you back off the gas after accelerating to a higher speed like that. It sounds like you went into overdrive and your torque converter locked up in quick succession.

Why would your engine "bellow"? Not sure I understand that phenomena in this context. The exhaust note should drop a bit in pitch as the RPM drops. It's possible that you have a "resonance" in your exhaust system, which is VERY common, and that you hit that resonance at the RPM range you dropped into.
Reply With Quote
  #9  
Old 01-27-2005
loneFX4's Avatar
Member
 
Join Date: Jan 2005
Location: Summerville,SC
Posts: 955
Quote:
Originally Posted by karrbass4life
Um and i got a question... X pipes are legal right?
yes they are completely legal as long as the cats stay on. and my truck sounds good not like some ricer or 4-banger. as soon as i can get a clip ill get it on here
Reply With Quote
  #10  
Old 01-27-2005
Member
 
Join Date: Jun 2004
Location: outside Detroit, where it's safer
Posts: 874
X-pipes are for true dual systems and the Ranger doesn't have one of those.
Reply With Quote
  #11  
Old 01-27-2005
loneFX4's Avatar
Member
 
Join Date: Jan 2005
Location: Summerville,SC
Posts: 955
Quote:
Originally Posted by Dave and Julie
X-pipes are for true dual systems and the Ranger doesn't have one of those.
all you need for true dual is two exhaust manifolds or headers attached to the engine. this is everybody that doesnt have an inline engine. so you can put an x-pipe on a ranger.
Reply With Quote
  #12  
Old 01-27-2005
n3elz's Avatar
RF Veteran
 
Join Date: Jun 2004
Location: Kennett Square, PA
Posts: 10,620
But to be an X it has to have TWO outlets that go somewhere. I have yet to see any Ranger with a true dual exhaust.
Reply With Quote
  #13  
Old 01-27-2005
ranger024x4's Avatar
RF Veteran
iTrader: (6)
 
Join Date: Aug 2004
Location: nova
Posts: 5,061
i ws trying too do that but you cant... it has 2 headers yes, but it goes into one cat... The way the O2 sensers are set up, you can only run one cat...
Reply With Quote
  #14  
Old 01-27-2005
n3elz's Avatar
RF Veteran
 
Join Date: Jun 2004
Location: Kennett Square, PA
Posts: 10,620
Meaning that an X pipe is a waste of time and will do nothing. It's intended to have an effect based on the dynamic pressure differences between the two sides of the engine in two separate pipes with two separate exits. If you haven't got that, you have no need of a crossover pipe.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
downshifting too much using cruise control jordway15 2.9L & 3.0L V6 Tech 1 12-03-2013 09:20 PM
Vibration when downshifting/upshifting dallas_01gt Drivetrain Tech 1 04-28-2009 09:17 PM
slow downshifting.....any fix? deathbypsi Drivetrain Tech 7 03-20-2008 05:06 PM
Downshifting anyone?? ranger_1999 4.0L OHV & SOHC V6 Tech 24 02-16-2008 10:03 AM
99 2.5L Auto downshifting hard when cold: Please help brianr440 Drivetrain Tech 2 01-29-2008 12:20 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 11:39 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.