Sometimes dies when slowing down.. - Page 2 - Ford Mustang Forums : Corral.net Mustang Forum
Reply
 
LinkBack Thread Tools Display Modes
post #36 of 66 Old 06-27-2019, 10:51 PM
Registered User
 
Trader Feedback: (0)
Join Date: May 2019
Posts: 24
My Mach 1 died a few times come to find out the intake temperature control sensor was bad and the maf sensor.

ScottAlan is online now  
Sponsored Links
Advertisement
 
post #37 of 66 Old 06-28-2019, 12:29 AM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
Yes, all of them are showing.

The only PID related to throttle isi Throttle Position Absolute. It accurately depicts when I let off the throttle and when I get back on it.


Sent using a computer..
BKKSW is offline  
post #38 of 66 Old 06-28-2019, 12:39 AM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
Both seem fine, the intake air temp temp is registering as it should , not too warm, and the MAF checks out. THanks though. Steve

Sent using a computer..
BKKSW is offline  
Sponsored Links
Advertisement
 
post #39 of 66 Old 06-28-2019, 12:45 AM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
well that is no good....

need to know what input is being satisfied to cause timing to be commanded at 9 deg so what appears randomly..........

its def tune related

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #40 of 66 Old 06-29-2019, 02:12 PM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
Would another piece of software get what we need, or is the data just not there in the stream sincfde it was captured by a device matched to the software?

Is the default tune always there regardless of the the tuner uploads?

Sent using a computer..
BKKSW is offline  
post #41 of 66 Old 06-29-2019, 05:29 PM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
any decent scan tool will do

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #42 of 66 Old 06-29-2019, 09:36 PM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
So we'd need a dififerent scan tool. And the only reason we're paying $400 for an SCT is because iti allows us to reprogram the EEPROMS?

I've never used this for anything but identifying and clearing codes, do you think it would capture data? Pretty sure I'd have to run it connected to a laptop amd go find their software but if you think it would do it I'll get to work. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 Of if it won't, what reasonably priced scan tool will. I don't mind spending money on tools, I'd much rather do that than pay someone else to do it.

Sent using a computer..
BKKSW is offline  
post #43 of 66 Old 06-29-2019, 10:09 PM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
i know nothing about sct

maybe find out if you can get more pids from them?

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #44 of 66 Old 06-30-2019, 11:05 PM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
I'll contact SCT and Foexwell in the morning.;

I changed my speed valve and noticed that when starting the car was more responsive and the cold start idle sequence was finally like the car was when new. I'll drive it tomorrow and see if it helps with my main issue.

Thanks.

Sent using a computer..
BKKSW is offline  
post #45 of 66 Old 07-04-2019, 08:01 PM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
300 miles later and not a single stall. FOr three days now everything seems fine. Knock on wood..


Sent using a computer..
BKKSW is offline  
post #46 of 66 Old 07-05-2019, 09:29 AM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
Quote:
Originally Posted by BKKSW View Post
300 miles later and not a single stall. FOr three days now everything seems fine. Knock on wood..
well this might be a good to time to log what is happening

so you can compare to the stalling logs

and see what has changed

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #47 of 66 Old 07-05-2019, 11:07 AM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
I captured a 20-25 minute log yesterday thinking the same thing.. but no idea how to compare them.

http://bangkokimages.com/log3.csv

Sent using a computer..
BKKSW is offline  
post #48 of 66 Old 07-06-2019, 09:33 AM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
watch the things that control idle decent

spark and IAC

i will have a look

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #49 of 66 Old 07-06-2019, 09:39 AM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
time 155, rpm is at 323rpm desired is 864 rpm

its still present??

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #50 of 66 Old 07-06-2019, 09:46 AM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
time 6306, beginning of another surge event

do you see it?

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #51 of 66 Old 07-06-2019, 05:22 PM
Registered User
 
Trader Feedback: (0)
Join Date: Oct 2007
Location: New Orleans, LA
Posts: 957
for what its worth you should only use genuine motorcraft iac valves Ive seen aftermarket ones that only have 55% of total movement (45% iscdc was off) where as the oem fords have 90% (10% is off)
Decipha is offline  
post #52 of 66 Old 07-06-2019, 10:58 PM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
I see it at 30.31s (730), 33.3s, 2.35s, 5.21s (690), 6.27s (540), 9.46s (850),10.7s (670), 10.32 (750), 12.37 (680), 13.56s (750), 14.05s (330), 14.43s (680), 14.51s (790), 14.56s (370), 15.02s (760), 15.06 (470), 15.16s (730), 15.10s (490), 15.14s (530), 15.22s (630),

Anything below 800 is undesirable and appears, at least at first glance, to be the same type of event or cycle of events. Not sure what to do with this or what could cause it.

Sent using a computer..
BKKSW is offline  
post #53 of 66 Old 07-07-2019, 01:00 AM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
Decipha - The car of course came with a Motorcraft idle speed valve and when I suspected it to be bad I replaced it with a new Motorcraft idle speed valve.. and for the next few years suffered though its slow response and the car stalling. I replaced it with a Standard, and it reacts so fast it keeps the car from stalling even though I haven't yet found the cause of the issue. The car only had 50,000 on it, so odd it's having trouble at all. I attribute it to all the storage/seating. Thanks.

Sent using a computer..
BKKSW is offline  
post #54 of 66 Old 07-07-2019, 09:27 AM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
Quote:
Originally Posted by BKKSW View Post
I see it at 30.31s (730), 33.3s, 2.35s, 5.21s (690), 6.27s (540), 9.46s (850),10.7s (670), 10.32 (750), 12.37 (680), 13.56s (750), 14.05s (330), 14.43s (680), 14.51s (790), 14.56s (370), 15.02s (760), 15.06 (470), 15.16s (730), 15.10s (490), 15.14s (530), 15.22s (630),

Anything below 800 is undesirable and appears, at least at first glance, to be the same type of event or cycle of events. Not sure what to do with this or what could cause it.
its normal to be at +- 50 rpm

the cause is quite simple, it in the tune

those logged PIDS for IAC and spark are COMMANDS, not what is actual

your spark and IAC are being commanded to do what they are doing

as they are told in the tune.

i am pretty sure, you are seeing 'rpm lockout'

this will cause exactly what you have

find a better tuner

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #55 of 66 Old 07-07-2019, 12:57 PM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
Originally the car had the tune Vortech provided in their piggyback Superchip solution with their SQ supercharger kit. It did this then. I thought it could be the tune so I tracked down the guy who for 12 years was the chief tuner for Anderson Ford. Anderson Ford has been big in the aftermarket speedshop type mods and sell many of their own parts (their CAI for the Vortech will raise boost by just over a pound and looks much better). He left and started his own tuning house. Considering it was doing it with Vortech's tune and his tune, is it possible it's anything else? I still suspect I need to run the ground wire from the trunk to the power block. This last tuner said he could see issues happening on his scope from that. I'm thinking I should get that done. But it involves a lot.. still, it should be done regardless.

Sent using a computer..
BKKSW is offline  
post #56 of 66 Old 07-07-2019, 02:06 PM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
Yeah run more grounds

It’s clear from the logs, it is being commanded to over and under shoot a target

Find someone that can tune, or get a tweecer/quarter horse and do it yourself

It’s simple math and logic in the strategy

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #57 of 66 Old 07-07-2019, 11:54 PM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
I'll get the grounds done in the next 2-3 weeks and if that doesn't fix it I'll get the tuner.. though I won't know what to change and if its safe to make the change. I'll post again once I run the grounds. Thanks

Sent using a computer..
BKKSW is offline  
post #58 of 66 Old 07-08-2019, 12:40 AM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
it wont blow up,

are you saying you are taking it to a tuner that doesn't know what they are doing?

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #59 of 66 Old 07-09-2019, 12:05 AM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
LOL! No, I'm saying I don't know what I'm doing so if I get the tuner you recommended I'll need an assist.

Sent using a computer..
BKKSW is offline  
post #60 of 66 Old 07-09-2019, 08:46 AM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
the person in post #51

does this for a living, and is very good

efidynotuning dot com

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #61 of 66 Old 07-13-2019, 02:08 PM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
Thanks!

Edited: I went to the website and spent some time reading the write-ups and will be going back to learn more.. right now my brain feels like mush and I'm starting to realize how little I actually know about this stuff. A couple questions if you don't mind:

a. Can all the tuning be done with one device like the Quarterhorse, or do you need a variety of devices for different parts of the tune. I need to go back and reread and reread again.. but one file I read listed a bunch of different devices.

b. This tuners location is NOLA? I could only find one reference to the phyiscal location to not sure.

c. I'm hoping on this question.. but could they read my tune and make adjustments according to my data log without by being there for this issue?

Thanks for your help.

Sent using a computer..
BKKSW is offline  
post #62 of 66 Old 07-13-2019, 04:15 PM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
what platform is your present tune?

NOLA?? what is that?


new orleans......yes i think


quarterhorse is the tuning device, it is intended that when tuning is done, you burn a chip for permanent install

QH allows tuning on the fly, which i assume is nice

when you totally understand the stuff on that site, i suggest you read the ford GUFB strategies document.......nice and heavy, logic charts.

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #63 of 66 Old 07-14-2019, 09:16 PM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
Yes, New Orleans, LA.

Not sure I'll ever totally understand everything on that site but I'm working on it.

Today I get in the car to drive and it starts and dies. 3-4 more times of that and I put my old speed valve back in and all was fine.. well, within the limitations of that specific speed valve. Crazy.

Sent using a computer..
BKKSW is offline  
post #64 of 66 Old 07-14-2019, 10:46 PM
Registered User
 
indy2000's Avatar
 
Trader Feedback: (3)
Join Date: Oct 2001
Location: vancouver
Posts: 21,108
well, with adequate amount of $$$, you can have remote tuned by that person

no need to learn it.

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
indy2000 is offline  
post #65 of 66 Old 07-15-2019, 02:07 AM
Registered User
 
Trader Feedback: (0)
Join Date: Oct 2007
Location: New Orleans, LA
Posts: 957
Online/Remote Tune - EFIDynoTuning

DIY Tuning -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
TMoss Porting - tmoss.efidynotuning.com
Decipha is offline  
post #66 of 66 Old 07-18-2019, 03:48 AM Thread Starter
Registered User
 
BKKSW's Avatar
 
Trader Feedback: (0)
Join Date: May 2012
Location: Illinois
Posts: 549
Thank you for that link, it answered many questions but created a few others.

My 1999 Cobra is currently tuned by a dyno shop and the ECU is married to my SCT tuner:

a. I read on your site about a specific 80# injector that is recommended even if you don't need it's full capability. I'd like to work changing the injectors into this process. Are the 60mm with EV1 connectors the right ones to order? And once you have my original or even an improved tine through you, I can install these nad you can make the turn to adjust for them?

b. What's the best way to get my current tune to you?

c. Once we use your services the SCT tuner becomes obsolete? And if so, you can un-marry the SCT so it can be sold later?

d. How much of a WOT event is needed and can this be achieved in one gear or does it need to hit gear 2 or more?

e. In this thread I've said how my last tuner said he had issues with the process he thinks was caused by a poor ground since I was using the unibody as my negative and only ran a new cable for the positive. Do you think this could be an issue and should I run the new negative before we start this process?

f. I replaced the OE speed valve when this issue first startd as the most likely suspect. I replaced it with another Motorcraft which proved too slow to keep up and going to a Standard keep the car from dying since it responded to changed so much faster. Unfortunately in less than 10 days it failed. They sent me another. Should I send it back and try another Motorcraft. Every time I buy an item via Amazon I suspect counterfeiting. Do you know if any way to tell if a small motorcraft part is authentic?

g. Perhaps the most important question, do you think this issue I'm having 'could' be a tuning issue? I accept there are no guarantees. Other than this issue I've been very pleased with this tune over the canned Vortech tune. The power increase was considerable and appreciated, but the improvement in day to day drivability wsa appreciated more.


Thank you

Sent using a computer..
BKKSW is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome