Weird intermittent problem?

jivepepper · August 25th, 2008, 11:59 PM

On 2 different occasions my car completely dies under hard acceleration. The first time I thought I blew off a intercooler pipe after the MAF. After pulling over and examining the pipes all looked fine. I got back into the car and it fired right up. Now fast forward 2 weeks and it happen to me again. I tried firing it back up but it didn't start as I was drifting. I pulled off the road and then it fired right up, and all seems fine.

I have had thrown a code recently for a missing cop. But I have yet to replace it. I think maybe my chip is lose on the ECU?

FoxHoss · August 26th, 2008, 12:03 AM

is it like the traction control kicks in when its not supposed to? or does the car completely die?

White99stang · August 26th, 2008, 12:20 AM

Mine did the same thing when i had a blower, don't know why it did it but as soon as i ran down the track and let off the gas the car died, restarted right back up but died all the time. Has even done it a couple of times when i was n/a

thewayshemoves · August 26th, 2008, 02:26 AM

Is there a fuel cut off built into the ECU's? I know my friend's EVO has this shit where if his boost peaks too high, instead of going lean the car just dies. It'll crank right back up afterwards and no lights are thrown. I don't have a boosted Mustang, I'm just throwing that idea out there.

jivepepper · August 26th, 2008, 01:15 PM

Originally Posted by FoxHoss

is it like the traction control kicks in when its not supposed to? or does the car completely die?

No I have the traction control/ABS turned off.

Originally Posted by White99stang

Mine did the same thing when i had a blower, don't know why it did it but as soon as i ran down the track and let off the gas the car died, restarted right back up but died all the time. Has even done it a couple of times when i was n/a

Originally Posted by thewayshemoves

Is there a fuel cut off built into the ECU's? I know my friend's EVO has this shit where if his boost peaks too high, instead of going lean the car just dies. It'll crank right back up afterwards and no lights are thrown. I don't have a boosted Mustang, I'm just throwing that idea out there.

It's usually right before I shift, so maybe the fuel pressure is dropping off to fast between shifts. I have removed all the things that would cause back pressure in the fuel system.

jivepepper · September 3rd, 2008, 03:20 AM

Today it died shortly after starting it right in the garage, and the mileage on the odometer was replaced with all dashes ---------------- and it wouldn't start. I cycled the key a few times and the numbers came back up and it started. I took the ECU out and the chip seemed to be firmly taped in? I'm starting to think maybe the chip or ECU is giving me fits?

02sonicGT · September 3rd, 2008, 08:06 AM

my guess would be a wiring problem. You might be losing voltage or a ground which would kill the spark and quite possibly throw the code for the cop. I can see it happening between shifts as load is transferred perhaps just enough to "wiggle" the loose connection. If you have a mechanism to datalog the voltage you may be able to pinpoint if that is indeed the problem.

Of course this can be drawn out to the other basic electrical checks...i.e. battery, alt, etc...

FoxHoss · September 3rd, 2008, 05:30 PM

the dashes on your gauge cluster would make me think somthing funny is going on with the bcm

jivepepper · September 3rd, 2008, 06:18 PM

I also start leaking fuel at the injector on number 8 and a tiny tad on number 2.
I started smelling gas on the way home when I was flogging on it a little bit. Pulled into the garage and found the leaks

TheLubracano · September 3rd, 2008, 06:32 PM

I would say start at the battery terminals and grounds to see if they are loose.

August 25th, 2008, 11:59 PM	#1
jivepepper Hardcore Enthusiast Join Date: Mar 2006 Location: Under a sombrero Posts: 1,763	Weird intermittent problem? On 2 different occasions my car completely dies under hard acceleration. The first time I thought I blew off a intercooler pipe after the MAF. After pulling over and examining the pipes all looked fine. I got back into the car and it fired right up. Now fast forward 2 weeks and it happen to me again. I tried firing it back up but it didn't start as I was drifting. I pulled off the road and then it fired right up, and all seems fine. I have had thrown a code recently for a missing cop. But I have yet to replace it. I think maybe my chip is lose on the ECU? __________________ Spending money I don't have, on parts I don't need. to impress people I don't know.... 2k MUSTANG GT 598/531 RWHP/RWTQ Just a little S-trim....

August 26th, 2008, 12:03 AM	#2
FoxHoss Enthusiast 02' GT Join Date: Oct 2007 Location: Brooklyn, CT Posts: 566	is it like the traction control kicks in when its not supposed to? or does the car completely die? __________________ Nitrous is like a hot girl with an STD... you wanna hit it, but your afraid of the consequences '02 GT~dd '89 LX~still in swap mode FOR SALE: Canfeild cylinder heads 302ci 2.02-1.60 valves 54cc combustion chambers-dual vavle springs $1200

August 26th, 2008, 12:20 AM	#3
White99stang MM's nicest mod, :) Join Date: Aug 2005 Location: elkridge, MD Posts: 2,854	Mine did the same thing when i had a blower, don't know why it did it but as soon as i ran down the track and let off the gas the car died, restarted right back up but died all the time. Has even done it a couple of times when i was n/a __________________ Have a Nice Day, Especially MSO 99 Mustang GT VT 302 Stroker 11.13@123 f.s. 9k 06 Dodge MegaCab Diesel 455rwhp/815rwtq

August 26th, 2008, 02:26 AM	#4
thewayshemoves Enthusiast 2003 GT Join Date: Nov 2006 Location: Leighton, Alabama Posts: 809	Is there a fuel cut off built into the ECU's? I know my friend's EVO has this shit where if his boost peaks too high, instead of going lean the car just dies. It'll crank right back up afterwards and no lights are thrown. I don't have a boosted Mustang, I'm just throwing that idea out there. __________________ SCT chip, 4.30's, Flowmaster w/ Turndowns, Trick Flow Plenum, BBK 70mm Throttle Body, Pypes X-pipe, BBK CAI, 100 shot and nitto radials (obtained).

September 3rd, 2008, 03:20 AM	#6
jivepepper Hardcore Enthusiast Join Date: Mar 2006 Location: Under a sombrero Posts: 1,763	Today it died shortly after starting it right in the garage, and the mileage on the odometer was replaced with all dashes ---------------- and it wouldn't start. I cycled the key a few times and the numbers came back up and it started. I took the ECU out and the chip seemed to be firmly taped in? I'm starting to think maybe the chip or ECU is giving me fits? __________________ Spending money I don't have, on parts I don't need. to impress people I don't know.... 2k MUSTANG GT 598/531 RWHP/RWTQ Just a little S-trim....

Sponsored Links	Remove Advertisements
Forums at Modded Mustangs Advertisement

September 3rd, 2008, 08:06 AM	#7
02sonicGT Regular 2002 Mustang GT Join Date: May 2008 Location: Bethlehem, PA Posts: 53	my guess would be a wiring problem. You might be losing voltage or a ground which would kill the spark and quite possibly throw the code for the cop. I can see it happening between shifts as load is transferred perhaps just enough to "wiggle" the loose connection. If you have a mechanism to datalog the voltage you may be able to pinpoint if that is indeed the problem. Of course this can be drawn out to the other basic electrical checks...i.e. battery, alt, etc...

September 3rd, 2008, 05:30 PM	#8
FoxHoss Enthusiast 02' GT Join Date: Oct 2007 Location: Brooklyn, CT Posts: 566	the dashes on your gauge cluster would make me think somthing funny is going on with the bcm __________________ Nitrous is like a hot girl with an STD... you wanna hit it, but your afraid of the consequences '02 GT~dd '89 LX~still in swap mode FOR SALE: Canfeild cylinder heads 302ci 2.02-1.60 valves 54cc combustion chambers-dual vavle springs $1200

September 3rd, 2008, 06:18 PM	#9
jivepepper Hardcore Enthusiast Join Date: Mar 2006 Location: Under a sombrero Posts: 1,763	I also start leaking fuel at the injector on number 8 and a tiny tad on number 2. I started smelling gas on the way home when I was flogging on it a little bit. Pulled into the garage and found the leaks __________________ Spending money I don't have, on parts I don't need. to impress people I don't know.... 2k MUSTANG GT 598/531 RWHP/RWTQ Just a little S-trim....

September 3rd, 2008, 06:32 PM	#10
TheLubracano Newbie 2000 Mustang GT SLOW Join Date: Feb 2008 Location: Phoenix Posts: 27	I would say start at the battery terminals and grounds to see if they are loose.

Threads Similar to: Weird intermittent problem?
Thread	Thread Starter	Forum	Replies	Last Post
Weird Problem	dothedew1654	5.0 Mustangs	3	July 25th, 2008 06:09 AM
Weird LED problem?	SUHLeen	2005+	0	June 4th, 2008 11:19 AM
umm have a weird problem? idle problem?	blue03mach1	99-04	16	March 4th, 2008 01:03 PM
weird problem	Reggedon	99-04	6	January 9th, 2008 10:40 PM
Weird Acceleration Problem	TheLocalGypsy	5.0 Mustangs	4	August 20th, 2007 01:27 PM

All times are GMT -4. The time now is 06:25 PM.
Contact Us - Modded Mustangs - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2008, Jelsoft Ent. Ltd. & SEO by vBSEO 3.1.0 ©2007, Crawlability, Inc.