96 mustang 4.6 - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > Ford Mustang Forum
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

Ford Mustang Forum This forum is for the discussion of all Ford Mustang models, including the Ford Mustang, Ford Mustang Convertible and Ford Mustang Coupe and all older/classic models and submodels.

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 05-11-2013, 14:32   #1 (permalink)
Registered User
 
Join Date: Jun 2011
Posts: 20
96 mustang 4.6

Working on mother in laws car so doing this by description from her.

Doesn't matter what speed but the car seems to downshift at times and the rpm meter seems to jump around. Car won' t maintain speed step on gas doesn't help. But it doesn't last very long then it works fine. Feels like
its shifting down. Had shop inspect trans but all they did was change fluid and filter but no shavings on magnet. Intermittent.

Help
fordforce39 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-11-2013, 14:43   #2 (permalink)
Dazed and Confused
 
CatSkinner's Avatar
 
Join Date: May 2012
Location: Upstate New York
Posts: 3,848
Re: 96 mustang 4.6

Assuming check engine not lit, any codes? Possible vacuum leaks?The shifting of the transmission will cause the rpm's to jump around. To exclude the engine, manually shift into a lower gear and see if the engine runs without issue.
__________________
'Scuse me, while I scrape this Honda outta my treads.
CatSkinner is offline   Reply With Quote
Old 05-11-2013, 17:23   #3 (permalink)
Registered User
 
Join Date: Jun 2011
Posts: 20
Re: 96 mustang 4.6

a little more information driving down the hwy at about 65 2k rpm, give a little gas to maintain but rpms jump to 4k jumping around and then it will stop.... she says it doesn't seem or sound like its' increasing speed. It will slow down to 45 or 50 then it will go ok.
fordforce39 is offline   Reply With Quote
Old 05-12-2013, 09:12   #4 (permalink)
Moderators
 
Join Date: Jul 2011
Posts: 548
Re: 96 mustang 4.6

That sounds like a normal function of the transmission downshifting (perhaps she's driving in OD at slow speeds?) or the torque converter locking and un locking. The tachometer would normally indicate varying RPM's. All conditions are normal.
Bajarider is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > Ford Mustang Forum



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 18:38.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.