Engine dies during (clutch in) braking - Mustang Evolution

Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 06-07-2008, 12:16 AM   #1
Registered Member
Regular
 
Join Date: Feb 2006
Region: Texas
Posts: 35
Engine dies during (clutch in) braking

ve been trying to figure out why my engine has been acting up lately. First off I have a H/C/I SSM Stage 2+ setup with Procharger P1SC @ 11psi dyno tuned with mafia extender. Ever since the warm weather came (Houston) it seems like I can hear even more noises from the engine area. When I clutch in at RPM's anywhere above 2k it has this chatter noise... don't know and don't believe it's from the spec stage 3 clutch at all since it's way out of break in. I also notice kind of a chatter or gobbling type noise coming from the procharger side of the engine bay during highway rpm's (3.73's) at 2.3K+ which didn't used to sound like that.

Other things I've noticed is that when it's windy and a gush of wind blows on my car, some times my car all of a sudden gets all jerky. I don't know why.

The biggest problem is that during stop and go traffic or when I have to moderately brake either hard or fast... when I push the clutch in, the rpm's drop real fast and sometimes it drops below 500 rpm to the brink of either wanting to die or dies period.. espcially during those left turns. I've found that if I don't clutch in, I really don't have a problem.

I've already replaced the previous IAC valve which correcting a large sum of my problems last time this started happening.. largely because idling was very bad. But now idling is no problem.

I'm pretty confident I've got 0 vacuum leaks, but I'll have it checked tomorrow by a different set of eyes as well as the brake booster. I'm also going to get a new set of TR6's and some wires too.

Is there any suggestions or possible explanations why I might be experiencing this?
_________________
machoman013 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-07-2008, 01:56 PM   #2
Registered Member
Regular
 
Join Date: Nov 2004
Posts: 107
Re: Engine dies during (clutch in) braking

your maf could be going, that could be causing the dying, did you try to readjust your clutch pedal
jedwards242000 is offline   Reply With Quote
Old 06-09-2008, 11:51 PM   #3
Registered Member
Regular
 
Join Date: Jun 2003
Region: Iowa
Posts: 414
Send a message via AIM to Horse Send a message via Yahoo to Horse
Re: Engine dies during (clutch in) braking

Sounds like a MAF issue to me too. The wind thing might be caused by gusting air getting pushed through the air filter (a common complaint on 5.0 mustangs with CAI) if you have a fender mounted air filter. If the MAF is dirty or failing it probably can't keep up with the changes in air density and is sending false signals to the PCM
__________________
4.2L , CAI, BBK 65MM throttle body, 30lb injectors, SSM ported intakes, FLEX 1/2" spacer, RPM big valve heads, Comp roller rockers and cam, ASP-underdrive pulley, GT rear swaybar, & Quad Shocks, Full MM Coilover conversion, 17" Grey Torque Thrust wheels, FMS Aluminum driveshaft 8.8 rear w/ 3.73 gears, Tri-Ax Shorthrow shifter & SPEC stage II clutch w/ aluminum flywheel
Horse is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-09-2008, 11:54 PM   #4
Legacy Member
Legacy
 
lowflyn's Avatar
 
Join Date: Aug 2003
Region: Mississippi
Posts: 19,890
Send a message via AIM to lowflyn
Re: Engine dies during (clutch in) braking

To be honest this is part of having a centrifugal blower on a car...the air currents are hitting back at the maf with the sudden closing of the throttle body. They can adjust for it in the tune but it will relearn it again.

In other words, don't clutch in, leave it in gear to nearly a stop and you'll solve the problem.
__________________
"I'm not driving too fast...just flying too low"
Mine:
-03 SB Cobra vert- 2552 of 5082 Born 02/25/03
Our's:
90 7up vert - new project-07 DSG Focus -DD
335
lowflyn is offline   Reply With Quote
Old 06-10-2008, 07:42 AM   #5
Road Trip!
 
Cajun JungleBoy's Avatar
 
Join Date: Dec 2005
Region: Louisiana
Posts: 1,147
Send a message via AIM to Cajun JungleBoy Send a message via Yahoo to Cajun JungleBoy
Re: Engine dies during (clutch in) braking

Hmm, I have no problems like that on my 5.0 with the vortech....
Cajun JungleBoy is offline   Reply With Quote
Old 06-10-2008, 08:40 AM   #6
Moderator Emeritus
Legacy
Regular
 
SpectorV's Avatar
 
Join Date: May 2003
Region: Alabama
Posts: 26,049
Send a message via AIM to SpectorV
Re: Engine dies during (clutch in) braking

spec clutches are known to chatter not just during break in, if it goes away when you let the clutch out then it sounds like a throw out bearing.
__________________
2003 Cobra Vert (Redfire) #3938 of 5082 @ 05/27/2003
472rwhp/493rwtq -Modification List - Dyno Sheet
2012 Mustang 3.7L M6 (Kona Blue)
2011 Ford Edge Sport (Red Metallic)
SpectorV is offline   Reply With Quote
Old 06-10-2008, 03:34 PM   #7
Registered Member
Regular
 
Join Date: Feb 2006
Region: Texas
Posts: 35
Re: Engine dies during (clutch in) braking

Hrm interesting answers. But I also hear the same noise when I'm not clutching in too when I just let off the gas during highway rpm's or accelerate to highway rpm's. It's like my P1SC decided to get louder when summer came. I got my sparks changed. I didn't know we had to change them at 10k and the fuel filter at 10k (doing next week). Some new observations, the engine wants to die less. Another shop owner also recommend I change the fuel filter more frequently.
machoman013 is offline   Reply With Quote
Old 06-29-2008, 05:59 PM   #8
Registered User
Newbie
 
Join Date: Jun 2008
Region: Florida
Posts: 2
Re: Engine dies during (clutch in) braking

check the brake booster
fjh321321 is offline   Reply With Quote
Old 06-30-2008, 09:33 PM   #9
Registered Member
Regular
 
Join Date: Feb 2008
Region: Ohio
Posts: 34
Re: Engine dies during (clutch in) braking

I have the same problem on my stock 3.9. It hasnt done it in a while. Probably 4 months. But during the winter it did it 3 or 4 times within a few weeks. Then I got it checked out and the dealership couldn't find anything wrong. Then its done it once since then. And yeah I've noticed it only after rapid acceleration then pushing the clutch quickly or on the highway and slowing down and pushing in the clutch around the higher speed interchanges.
Dark04ShadowV6 is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang

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 On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Braking wiarumas General Car Discussion 10 07-02-2008 01:48 PM
weak braking greenpony02 Pre-2005 V6 Mustang 9 08-08-2005 07:04 PM
questions about braking charkelly9 Pre-2005 V6 Mustang 2 03-28-2005 02:12 PM
braking tech oaktonarcher Pre-2005 V6 Mustang 11 02-25-2005 03:46 PM
Braking issues fastmustangs1 Pre-2005 V6 Mustang 3 10-10-2004 10:54 PM

» Like Us On Facebook



02:43 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.