Foxbody Mustang Holley Terminator X Idle Tuning
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- čas přidán 28. 08. 2020
- Tuning the idle settings on a Holley Terminator X-equipped 1991 Foxbody Mustang. Idle air control (IAC) settings aren't very intuitive for manual transmission Mustangs with the pulse width modulated (PWM) idle air control motor.
- Auta a dopravní prostředky
If your IAC doesn't work, do this: czcams.com/video/kgJlLNI4xP4/video.html
God, google, safari are all watching and listening to us. I just was looking for a terminator x for a new edge build I’m thinking about doing, and today your videos come up when I get home and started watching you tube! Great information! Thanks. New sub!
Thank you for these videos. I install my Holley and then took it to a shop for tuning. When I picked up the car it ran like crap your videos has helped me set up the car so I can drive it. Thanks and keep them coming
Glad to help!
Thanks for making this vid, gonna help when i get my motor running and have to adjust my terminator!!
Let us know how it goes!
Great video I can only imagine the time you've put in playing with all these features
Thanks! Be sure to watch this updated version: czcams.com/video/F2APprj4jeU/video.html
Eventually thisnis the way I want to go and this video is very helpful knowing I have 5 speed cars this definitely will help me out . Thank you so much. Glad I found your Chanel.
Do these things too: czcams.com/video/F2APprj4jeU/video.html
I changed from Megasquirt to TX today 1 start of engine ..changed some of the tune thats really of for the Mustangs . timing and fuel..after setting the timing correctly and engine at temp ... Idle is solid as a rock.. just changed the Iac to 5.0 PWM ...
Thank you. I am having issues with my idle right now.
Explain the issues, and I may have ideas. Here is also more info: czcams.com/video/0_rCN8KExiY/video.html
Amazing video my friend !! Congratulations
I.m from Spain and dont find people to know about holley terminator x max. I bought my 1971 mustang mach 1 last yeat in EE.UU. Texas and is very difficult for mi tune this EFI.
So tour video is pure gold for me!!! And very helpful.
I will try to change the configuration to find a goog tune.
Tks a lot and if you come to Almerìa ANDALUCÌA, Spain... are you invited to eat a paella on the mediterranean beach and flamwnco party!!!! 😊😊😊❤❤❤.
We are in contact and i will say
You how is the advance with my old mustang.
Cheers
My engine is a 351 w stroker to 408 ci and 450 hp or more!!!
Automatic transmision Ford 4R70W
I had a factory ford IAC on my mustang and I never was happy with it on my terminator x so I purchased the accufab adapter with GM IAC and it works soooooo well it took me a year to figure it out the IAC would never be consistent and coming to a stop my idle would drop below Target RPM and slowly recover (ford pwm IAC) I did everything possible to figure it out until I was on Holley's forum and read you have to flip two of the wire's on the Holley 4pin IAC Plug because Holley's harness is wired for Holley/Chrysler IAC.
GM IAC stepper motor for the win...............
This will get the Ford IAC acting how it should. No need to switch to the GM IAC: czcams.com/video/F2APprj4jeU/video.html
Great content
Thanks! Please like, subscribe, and check out my other videos!
Thanks for these videos man ..I have a 93 mustang gt I just got this installed now my car ever time I rev it up it stalls no matter in park or coming to a stop driving ...and am new at this terminator
This an auto trans? Make sure your IAC is working. With the engine idling, unplug the IAC motor. If it stalls, then the IAC is working. If nothing changes the IAC is not working. Let me know on that ASAP.
@@Mustang-Geek Na mine is stick ..I’ll have to try that out I’ll definitely let you know what happens I really appreciate it
@@ripjanetstrimel3312 Oh, you said "in park" so I assumed it was an auto. Yeah, check the IAC to see if it's doing anything.
You rock!
grat video tnks for the great info! but now I have the Issue that on hot star ups the rpm goes to 3000 and stays there I finally logged it hopefully I can see what is going on
This is an update. Do these things: czcams.com/video/F2APprj4jeU/video.html
Took my fox out for a couple boost pulls and when I came to a stop, the idle stayed at 1500rpm... I replaced IAC and tried adjusting idle screw to no change. What else should I check?
First, try this: czcams.com/video/F2APprj4jeU/video.html
Thank you for the video, it help a lot on my foxbody. One small issue I'm having is the car takes longer than I'd like to idle down. It hangs at 2400 rpms for about half a second longer than I would like. What changes would you recommend to help with that?
Try this video: czcams.com/video/F2APprj4jeU/video.html
I’ve seen on other post and the directions of the term x that you have to go into the program select pwm in the soft ware and then you have to select it in I/o and drag it to the b3 pin for the iac to even work. Did you do this before making this video?
Some have had this issue, but I believe Holley has addressed it.
Do you know can you adjust fuel compensation settings from the handheld or does this need to be done from a laptop? Just started the car for the first couple times idle ls rich and the fuel compensatio is -50 which is the default I think.
I recall you can do it from the handheld. You can adjust the desired A/F ratio at idle. However, if the car is still rich, but the Terminator is taking out a lot of fuel, something else is wrong. Make sure you have the right injectors selected, the MAP sensor is hooked up to manifold vacuum, etc.
Thanks for posting, I have never really liked how the IAC works, but have not taken the time to play with it. This makes me want to try to make it better! What frequency do you have yours set for?
Good question! Mine is set to 600 Hz, but I haven't found any performance difference with different frequencies. I just set it to 600, as it was the middle :)
Get a Ford to GM IAC adapter from Accufab and run an LS 4 Stepper IAC....Youll be glad you did..
i have a question? is your iac set on stepper or pwm? i was told it needs to be set on pwm and pin it to number 4 and my iac hold goes crazy after i let off the gas
2 things 1st make sure the iac is set correctly. And then check in the actual tune file(you will need your laptop) that output 4 is set to pwm. Alot of them were not and this had to manually done. I got one of the first batches and it wasnt linked.
Would a different cam (bcam) effect the idle settings as well? I’m having surging issues and stalling while decelerating and the car isn’t enjoyable to even drive.
Start by doing these things: czcams.com/video/F2APprj4jeU/video.html
I got an 87 gt manual, mine is running really rich, and no shops here in Clarksville tn know how to tune the Holley terminator can you help?
Boost addicts in Gallatin TN would be my first call. But first: how do you know it's rich?
What version software are you using? maybe that idle issue was fixed in the latest firmware?
It's not really a software issue, but rather a way Holley's IAC strategy works. I've had the best luck using a 1D table czcams.com/video/0_rCN8KExiY/video.html
I've got a 5L with a aod on it. What do yall recommend for iac parked position. I can get it to start but sometimes it takes two cranks. Also, what's going on with your fuel pump prime or that first fuel shot while cranking? Do you like more fuel or kinda how these systems come stock?
Honestly, I just left the fuel prime alone. Never touched it. I'd experiment with IAC park position and see how it runs *just* after it fires. Is the idle high or low?
The idle is perfect after it starts. When I'm in traffic it idles 25 rpm high but I'm not mad about that. I'll try leaving all the fuel stuff alone and playing with iac parked. Thanks man!
Will it start without the IAC sensor connected?
Yes.
I have a 1994 ford Lightning, I had a mechanic shop install the terminator x, 24lbs injectors, aluminum heads,it’s cammed, my truck struggles to get past 3000 rpm and won’t accelerate any help ?
I have a automatic c6 tranny (3speed)
Sorry you're having trouble. There's a lot that could be the problem. I'd try calling Holley tech support and narrow it down.
How would you do it for turbo cars
I think these idle control settings would be the same for turbo cars.
Installed a Terminator x on a 94 f150 5.0 manual trans. It has a slightly bigger camshaft than stock and the idle isnt the best. Would the settings be similar to this videos?
I think so, but check out the other videos on this channel for idle control strategies.
@@Mustang-Geek will do. It also cranks a lot before it actually starts. Any idea of what settings to change?
@@cesarchavezalvarado5570 Does it struggle to start, or does it just crank a while? I recall mine craned a little longer than stock to fire.
@@Mustang-Geek it does not struggle to start, it just cranks for longer. Is there a way to fix that or will it go away as it self learns?
@@cesarchavezalvarado5570 I don't think the number of revolutions before it fires is adjustable.
I can’t get my car to even idle at all
Do everything in this video: czcams.com/video/F2APprj4jeU/video.html
Everybody wondering why your fox still runs like ass after doing all of this. Can the Can bus plug from holley for 60 bucks and a laptop with windows. Download Holley terminator x software and change your IAC to PWM in the settings and drag PWM to the outputs. Night and day difference and car runs like a dream. You can only do so much with the handheld. The laptop is definitely what you need to get it right.
The IAC is supposed to be set up as PWM from the factory. However, some people have had an issue where it's not set to PWM automatically, which will require hooking up a laptop and setting the IAC to PWM. If your IAC doesn't work AT ALL, it probably needs to be set to PWM using the software.
@@Mustang-Geek mine wasn't set from the factory and I had to go in with a laptop and drag the PWM to the 4th output. I guess its hit or miss but it was driving me crazy trying to figure it out.
@@thehellfox3423 Same for me, but I understand it's rare...maybe it's not as rare as I thought!
Thank you! I was about to post this... trying to fool the computer with messing with the settings but not actually fixing the problem is ass backwards. I appreciate his attempt to help but its not going to fix anything. Dont forget to set the frequency to 315 when you swap it to pwm
@@flyingwrenchesautomotive czcams.com/video/kgJlLNI4xP4/video.html