Acceleration issue

NYMustang21 · October 19th, 2008, 03:54 AM

I recently replaced my alternator, and after doing so I have noticed that it doesn't accelerate as fast and the exhaust makes a loud hum when I do so. It is the correct alternator and I did everything right, but when I turn overdrive off it regains its pep and the exhaust is quieter. Is it an issue with the battery and the computer? Any ideas?

speedfreak · October 19th, 2008, 04:31 AM

Try to reset the computer again by unhooking it for at least thirty seconds. Then see what happens. I am not sure why an alternator and overdrive would have any issues like that.

GreenFaleen · October 19th, 2008, 11:53 AM

do a hard reset on the system take off your ground and touch it to your positive then put the ground back on

NYMustang21 · October 19th, 2008, 01:25 PM

Are there any steps I have to take after I reset it? Like to help the computer? Just to avoid this problem again.

dgt_mustang · October 19th, 2008, 04:32 PM

whats the purpose behind a "hard reset"? i never heard of that before.

Stang Tech · October 19th, 2008, 05:11 PM

it resets the computer so that it will have to relearn all of the settings.

1FUN4RD · October 19th, 2008, 05:17 PM

Originally Posted by GreenFaleen

do a hard reset on the system take off your ground and touch it to your positive then put the ground back on

Sounds like a good way to fuck things up.

N29468 · October 19th, 2008, 05:30 PM

lol i agree with 1fun4rd i dont think i would try that but hey its your car go for it.

Avaric3 · October 19th, 2008, 05:30 PM

in electricity, the power should never touch the ground unless you like extreme heat, sparks and fire

GreenFaleen · October 19th, 2008, 05:50 PM

It wont hurt a thing you just touch the ground to the power it is the same thing most mechanics do after they put back in your battery. It is just a way to reset the PCM without driving the car 75 miles, there will be no heat no sparks no damage

Learn before you guys say things

Avaric3 · October 19th, 2008, 05:51 PM

all you have to do is disconnect the ground wire for fifteen minutes and itll reset

GreenFaleen · October 19th, 2008, 05:56 PM

Originally Posted by Avaric3

all you have to do is disconnect the ground wire for fifteen minutes and itll reset

that will reset the simple things it wont push the car to reset things like the OBD2 cycle, sensor calibration, and fuel correction. Plus is a lot faster

N29468 · October 19th, 2008, 05:56 PM

Originally Posted by Avaric3

all you have to do is disconnect the ground wire for fifteen minutes and itll reset

+1

Thats what i do and green you dont have to be a dick about it. Not a very nessesary comment.

GreenFaleen · October 19th, 2008, 06:01 PM

Originally Posted by N29468

+1

Thats what i do and green you dont have to be a dick about it. Not a very nessesary comment.

Im not being a dick but tell someone that something that will fix his car is going to hurt it is spreading false information. Which this section is full of a lot of times.

Avaric3 · October 19th, 2008, 07:18 PM

well in greens defense, im gonna assume greens done it before and hasnt fucked shit up lol, so its worth a try

HMUSN · October 19th, 2008, 07:37 PM

dude green.. that's a great way to make your battery explode.

don't think volts.. think amps.

it's not safe to do that at all.

GreenFaleen · October 19th, 2008, 07:43 PM

Originally Posted by HMUSN

dude green.. that's a great way to make your battery explode.

don't think volts.. think amps.

it's not safe to do that at all.

Its perfectly fine, There is a ground fault in the system all it does is hardsets the computer back to a the original settings if you have ever had your car worked on at a dealership they did it before they gave you your car back.

You dont Cross the two posts with a piece of metal or anything you disconnect your ground take the terminal and touch it to your positive terminal you can't do anything to the battery it isnt grounded out

HMUSN · October 19th, 2008, 07:45 PM

the battery post is metal man. lol

you will pop a fuse, short your alternator or pop the battery.

HMUSN · October 19th, 2008, 07:46 PM

tell ya what. I'll give ya ten cool points if you get it on vid

GreenFaleen · October 19th, 2008, 07:49 PM

ok ill go do it right now hold on

October 19th, 2008, 03:54 AM	#1
NYMustang21 Newbie Join Date: Apr 2008 Posts: 9 iTrader: 0 reviews	Acceleration issue I recently replaced my alternator, and after doing so I have noticed that it doesn't accelerate as fast and the exhaust makes a loud hum when I do so. It is the correct alternator and I did everything right, but when I turn overdrive off it regains its pep and the exhaust is quieter. Is it an issue with the battery and the computer? Any ideas?

October 19th, 2008, 04:31 AM	#2
speedfreak Newbie 2004 3.9L V6 15.1 Join Date: Oct 2008 Location: West Palm Beach Posts: 43 iTrader: 0 reviews	Try to reset the computer again by unhooking it for at least thirty seconds. Then see what happens. I am not sure why an alternator and overdrive would have any issues like that. __________________ Race what ya Brought

October 19th, 2008, 11:53 AM	#3
GreenFaleen MM's Resident Ricer 2006 Scion tC 13.001@113 Join Date: Nov 2006 Location: Raleigh/Lenoir, NC Posts: 9,880 Blog Entries: 2 iTrader: 1 reviews	do a hard reset on the system take off your ground and touch it to your positive then put the ground back on __________________ Scion Tc Turbo - 9psi 297whp 287wtq 2500lbs :p MM 4 Banger club: Senior Ricer NCMM #9 "Horsepower sells cars, torque wins races." -Carroll Shelby

October 19th, 2008, 05:11 PM	#6
Stang Tech Regular 2003 Mustang GT Vortech Join Date: Jun 2008 Location: Chicago Posts: 210 Blog Entries: 1 iTrader: 1 reviews	it resets the computer so that it will have to relearn all of the settings. __________________ Ford Certified Tech Land Rover Certified Tech Ase Certified Tech Honda/ Acura Certified Tech AllData Automotive Information Specialist 03 Mustang GT Vortech V3 Intercooled 407/415 to the wheels BOOOOSSSTTTTTT

October 19th, 2008, 05:30 PM	#9
Avaric3 Hardcore Enthusiast 2002 Ford Focus slow as fuck Join Date: Apr 2007 Location: M-Pan, NJ Posts: 2,556 iTrader: 4 reviews	in electricity, the power should never touch the ground unless you like extreme heat, sparks and fire __________________ 99 V6 Mustang-sold 02 Ford Focus-sold 98 Camaro Z/28-lid, catback

October 19th, 2008, 01:25 PM	#4
NYMustang21 Newbie Join Date: Apr 2008 Posts: 9 iTrader: 0 reviews	Are there any steps I have to take after I reset it? Like to help the computer? Just to avoid this problem again.

October 19th, 2008, 05:50 PM	#10
GreenFaleen MM's Resident Ricer 2006 Scion tC 13.001@113 Join Date: Nov 2006 Location: Raleigh/Lenoir, NC Posts: 9,880 Blog Entries: 2 iTrader: 1 reviews	It wont hurt a thing you just touch the ground to the power it is the same thing most mechanics do after they put back in your battery. It is just a way to reset the PCM without driving the car 75 miles, there will be no heat no sparks no damage Learn before you guys say things __________________ Scion Tc Turbo - 9psi 297whp 287wtq 2500lbs :p MM 4 Banger club: Senior Ricer NCMM #9 "Horsepower sells cars, torque wins races." -Carroll Shelby

October 19th, 2008, 05:51 PM	#11
Avaric3 Hardcore Enthusiast 2002 Ford Focus slow as fuck Join Date: Apr 2007 Location: M-Pan, NJ Posts: 2,556 iTrader: 4 reviews	all you have to do is disconnect the ground wire for fifteen minutes and itll reset __________________ 99 V6 Mustang-sold 02 Ford Focus-sold 98 Camaro Z/28-lid, catback

October 19th, 2008, 07:18 PM	#15
Avaric3 Hardcore Enthusiast 2002 Ford Focus slow as fuck Join Date: Apr 2007 Location: M-Pan, NJ Posts: 2,556 iTrader: 4 reviews	well in greens defense, im gonna assume greens done it before and hasnt fucked shit up lol, so its worth a try __________________ 99 V6 Mustang-sold 02 Ford Focus-sold 98 Camaro Z/28-lid, catback

October 19th, 2008, 07:37 PM	#16
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	dude green.. that's a great way to make your battery explode. don't think volts.. think amps. it's not safe to do that at all. __________________

October 19th, 2008, 07:45 PM	#18
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	the battery post is metal man. lol you will pop a fuse, short your alternator or pop the battery. __________________

October 19th, 2008, 07:46 PM	#19
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	tell ya what. I'll give ya ten cool points if you get it on vid __________________

October 19th, 2008, 07:49 PM	#20
GreenFaleen MM's Resident Ricer 2006 Scion tC 13.001@113 Join Date: Nov 2006 Location: Raleigh/Lenoir, NC Posts: 9,880 Blog Entries: 2 iTrader: 1 reviews	ok ill go do it right now hold on __________________ Scion Tc Turbo - 9psi 297whp 287wtq 2500lbs :p MM 4 Banger club: Senior Ricer NCMM #9 "Horsepower sells cars, torque wins races." -Carroll Shelby

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

LinkBacks (?) LinkBack to this Thread: http://www.moddedmustangs.com/forums/v6-mustangs/93712-acceleration-issue.html
Posted By	For	Type	Date
Acceleration issue	This thread	Refback	October 19th, 2008 07:47 PM

Threads Similar to: Acceleration issue
Thread	Thread Starter	Forum	Replies	Last Post
Acceleration	HEMENWAY89GT	5.0 Mustangs	4	December 5th, 2007 07:39 AM
Acceleration	HEMENWAY89GT	5.0 Mustangs	4	December 3rd, 2007 10:21 PM
want more acceleration!!!	93mustanggtauto	5.0 Mustangs	25	October 16th, 2007 12:15 AM
Acceleration Stumble	Juggalo_X	V6 Mustangs	3	June 13th, 2007 03:30 PM
Stutter under acceleration	Goose	5.0 Mustangs	6	August 7th, 2006 02:36 PM

All times are GMT -4. The time now is 07:37 PM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.