SVT Lightning Issues

moneygreenstang · January 19th, 2012, 05:51 PM

The L is my DD and its been 10-60 degrees here the past few mothns. When I leave the car parked for a while overnight or something and go to start it the next day. Its a really hard start

Starter turns over fine, but the motor feels like its about to fall apart, same way it drove when I launched a spark plug. Whole truck shakes for a second then itll catch and rev up to about 1500 and drive fine all day when its warm.

Any ideas? Heres a video of a cold start today where it failed to start on the first try..

Cold SVT Lightning Start - YouTube

Im about done with these Fords if it turns out to be something major

glittle75 · January 19th, 2012, 06:53 PM

any other probs? any hesitation or anything while drving? regular maintenance done? more details would help if there are any.

moneygreenstang · January 19th, 2012, 08:30 PM

Ive only owned the car for 12k miles from 86-98k, got the oil changed at ford last oil change was about 200 miles ago and it was doing it before that.

Havent changed the fuel filter

Blew a spark plug back in July had it helicoiled and its been fine ever since and has done that one the temps dropped below 50*

glittle75 · January 20th, 2012, 08:49 AM

I say clean the MAF and IAC valve. Yea it just happened when the temps got cold, but maybe its coincedence and thats when it got dirty enough to throw it off.

And another thought, if you had the plug helicoiled in, maybe they over drilled the head hole, and your helicoil is shrinking with the colder temps, resulting in a compression loss until warm. Maybe not enough to rattle the plug out, but enough to bleed off most of your compression. Maybe cold start it with that plug boot off and see if you can hear the compression leaking out through the plug well.

stal94gt · January 20th, 2012, 11:47 AM

When it hesitates like that it apears to be a fuel issue. A common problem is clogged fuel filter, failing pumps, or the Y that joins the 2 fuel pumps has split.

moneygreenstang · January 25th, 2012, 02:40 AM

Would a fuel issue go away after its warm? Ive heard of the Y pipe issue on LightningRodder.com

Im going to take it in next week once I get the Mustang out of storage so I can have them test it on a cold start.

Both cars will be for sale soon fortunately and unfortunately

January 19th, 2012, 06:53 PM	#2
glittle75 Enthusiast 2003 Mach 1 Join Date: Apr 2011 Location: NC Posts: 726 iTrader: 0 reviews	any other probs? any hesitation or anything while drving? regular maintenance done? more details would help if there are any. __________________ 2003 Azure Blue Mach 1 - KB, Suspension, Bolt-ons. 497hp, 460tq.

January 19th, 2012, 08:30 PM	#3
moneygreenstang Enthusiast 2001 Mustang GT Join Date: Jun 2008 Location: Florida Posts: 722 iTrader: 2 reviews	Ive only owned the car for 12k miles from 86-98k, got the oil changed at ford last oil change was about 200 miles ago and it was doing it before that. Havent changed the fuel filter Blew a spark plug back in July had it helicoiled and its been fine ever since and has done that one the temps dropped below 50* __________________ 01 GT Vert - Triple Black - 2v 5.4 270/340 00 Lightning - Triple Black - 2v SC 5.4 400/500 Brand New Tubular UCA and LCA set for sale PM me Slightly Used 05-09 Halo Headlights for sale PM me

January 20th, 2012, 08:49 AM	#4
glittle75 Enthusiast 2003 Mach 1 Join Date: Apr 2011 Location: NC Posts: 726 iTrader: 0 reviews	I say clean the MAF and IAC valve. Yea it just happened when the temps got cold, but maybe its coincedence and thats when it got dirty enough to throw it off. And another thought, if you had the plug helicoiled in, maybe they over drilled the head hole, and your helicoil is shrinking with the colder temps, resulting in a compression loss until warm. Maybe not enough to rattle the plug out, but enough to bleed off most of your compression. Maybe cold start it with that plug boot off and see if you can hear the compression leaking out through the plug well. __________________ 2003 Azure Blue Mach 1 - KB, Suspension, Bolt-ons. 497hp, 460tq.

January 20th, 2012, 11:47 AM	#5
stal94gt I Post Entirely Way Too Much 2003 mustang v6 ;) slow Join Date: May 2010 Location: eglin afb florida Posts: 10,197 iTrader: 2 reviews	When it hesitates like that it apears to be a fuel issue. A common problem is clogged fuel filter, failing pumps, or the Y that joins the 2 fuel pumps has split. __________________ bone stock from the factory!

January 25th, 2012, 02:40 AM	#6
moneygreenstang Enthusiast 2001 Mustang GT Join Date: Jun 2008 Location: Florida Posts: 722 iTrader: 2 reviews	Would a fuel issue go away after its warm? Ive heard of the Y pipe issue on LightningRodder.com Im going to take it in next week once I get the Mustang out of storage so I can have them test it on a cold start. Both cars will be for sale soon fortunately and unfortunately __________________ 01 GT Vert - Triple Black - 2v 5.4 270/340 00 Lightning - Triple Black - 2v SC 5.4 400/500 Brand New Tubular UCA and LCA set for sale PM me Slightly Used 05-09 Halo Headlights for sale PM me

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: SVT Lightning Issues
Thread	Thread Starter	Forum	Replies	Last Post
5.4 Lightning Cam help	Mustang02gt	4V / SVT	2	December 2nd, 2011 04:54 PM
04 lightning	02MiNeRaLgRaYGT	99-04	3	January 11th, 2008 05:38 PM

All times are GMT -4. The time now is 07:51 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.