I'd love to see some more in depth videos! At about 34:45 Donny mentions the engine needing to spin over more than normal before it starts when it's hot. Sometimes, pulling a bunch of timing during cranking solves that for me. If you've read this far you've got the important parts, if you want to know how I do that, it's below: You'll need some room on the left side of the timing table between cranking and idle RPM. If the idle RPM is the far left column, you'll have to change the scaling a little. I usually do whatever the crank to run RPM is as the first RPM increment, then 100 more than crank to run, then go back to whatever is normal. I'll go online, watch the timing table while it's cranking, see what cells it's in before it fires up, and change those cells to 5 degrees. Then I change the cranking timing to 0-5. During the slow piston speed the starter can achieve, my opinion is that there is no need to lead the burn with spark advance. With 15 degrees at 200-400 RPM, it wouldn't surprise me if peak cylinder pressure was close to TDC. Pulling most (or all) the timing ensures peak cylinder pressure on the down swing of the power stroke.
Thanks for info - When i switch to “ ford 5.0 “ and PWM. i noticed i then get an unassigned output “ IAC PWM “. i have an open spot to assign on output # 4. then am i suppose to run output number 4 to the IAC ? or is there another way Big thanks
@@mfkustoms - the IAC will still work even with out assigning the pin and i’m assuming output # 4 would go to iAC ? i’ve seen videos where guys simply change to the 5.0 IAC and Change to PWM and car actually runs and idles i would really like any more info about assigning pin and any rewriting needed thanks so much for info
@@foxbodyinnovations-fbi3927 you do need to assign the IAC to the Output or the IAC will NOT work. Output 4 is typically what Holley has it wired too unless it’s an old harness. If you want more information reach out to us via email and we’d be more than happy to go into detail. You can use the “Contact Us” on our website (www.mfkustoms.com) to send us a message.
You would need to follow a procedure for that GM IAC. They get setup differently. Still would set it up with a warm idle but the remaining settings would be completely different.
@@patnappo Basically with a GM IAC you get the vehicle up to temperature, adjust the idle of the car with the throttle stop until the IAC is reading around 10%. Then shut the car off, do a TPS auto set, and then slowly adjust your other Idle tables to meet your needs.
We don’t have any that do that, but we’d recommend jumping on one of the Ford Holley groups on Facebook and see if anyone else does. This could be many things, one common one is air pressure stabilizing. This is because the engine is a big vacuum pump.
@@mfkustoms car runs and drive killer other than that little issue.. soon as you shut it off it has a gasp of air going through the cold air intake tube.. Unplug iac it doesn’t do it..
@@GarrettSmith-dk5wg personally I wouldn’t worry about it. What is most likely happening is what we described. Because with the IAC disconnected it’s fully closed. BBK throttle body?
Thank you both! Everything you guys help us regular guys with is very much appreciated!!
You are very welcome!
You guys are the best!
Any info you guys are will to share please do👍
Will do!
I'd love to see some more in depth videos!
At about 34:45 Donny mentions the engine needing to spin over more than normal before it starts when it's hot. Sometimes, pulling a bunch of timing during cranking solves that for me. If you've read this far you've got the important parts, if you want to know how I do that, it's below:
You'll need some room on the left side of the timing table between cranking and idle RPM. If the idle RPM is the far left column, you'll have to change the scaling a little. I usually do whatever the crank to run RPM is as the first RPM increment, then 100 more than crank to run, then go back to whatever is normal.
I'll go online, watch the timing table while it's cranking, see what cells it's in before it fires up, and change those cells to 5 degrees. Then I change the cranking timing to 0-5.
During the slow piston speed the starter can achieve, my opinion is that there is no need to lead the burn with spark advance. With 15 degrees at 200-400 RPM, it wouldn't surprise me if peak cylinder pressure was close to TDC. Pulling most (or all) the timing ensures peak cylinder pressure on the down swing of the power stroke.
Do any you guys happen to have the 550-937F in stock ready to ship??
Anderson Ford does most likely.
Thanks for info - When i switch to “ ford 5.0 “ and PWM. i noticed i then get an unassigned output “ IAC PWM “. i have an open spot to assign on output # 4.
then am i suppose to run output number 4 to the IAC ?
or is there another way
Big thanks
Yes you do need to pin the PWM to Output 4. We should have covered that but was more focused on getting the car to idle than that piece.
@@mfkustoms - the IAC will still work even with out assigning the pin and i’m assuming output # 4 would go to iAC ?
i’ve seen videos where guys simply change to the 5.0 IAC and Change to PWM and car actually runs and idles
i would really like any more info about assigning pin and any rewriting needed
thanks so much for info
@@foxbodyinnovations-fbi3927 you do need to assign the IAC to the Output or the IAC will NOT work. Output 4 is typically what Holley has it wired too unless it’s an old harness. If you want more information reach out to us via email and we’d be more than happy to go into detail. You can use the “Contact Us” on our website (www.mfkustoms.com) to send us a message.
@@mfkustoms - Thanks ! i sent you a message through your website
will we be burning one of the only 4 outputs on a terminator? if so, is there a work around for this? @@mfkustoms
Thanks guys im going to play with it and see. I have a GM iac with this setting be close? Whats do you suggest
You would need to follow a procedure for that GM IAC. They get setup differently. Still would set it up with a warm idle but the remaining settings would be completely different.
@@mfkustoms where can i get the GM IAC procedure? and remaining setting. I applicate you taking the time to respond
@@patnappo Basically with a GM IAC you get the vehicle up to temperature, adjust the idle of the car with the throttle stop until the IAC is reading around 10%. Then shut the car off, do a TPS auto set, and then slowly adjust your other Idle tables to meet your needs.
Does anyone else have a gasp of air go through your intake when your engine shuts off ?
We don’t have any that do that, but we’d recommend jumping on one of the Ford Holley groups on Facebook and see if anyone else does. This could be many things, one common one is air pressure stabilizing. This is because the engine is a big vacuum pump.
@@mfkustoms car runs and drive killer other than that little issue.. soon as you shut it off it has a gasp of air going through the cold air intake tube.. Unplug iac it doesn’t do it..
@@GarrettSmith-dk5wg personally I wouldn’t worry about it. What is most likely happening is what we described. Because with the IAC disconnected it’s fully closed. BBK throttle body?
@@mfkustoms yeah I’m kinda over it.. it doesn’t effect how it runs.. I’m almost positive stock throttle body