6-speed tuned trucks Cruise control

87jumpy · Jul 26, 2012

Mine works fine with my Spartan tuning

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dozer · Jul 26, 2012

My H&S also works with dry shift from 5th to 6th (no clutch). Its sucks, but at least I can get it to work when I really need it.

superdutyfarmer · Jul 26, 2012

never had the truck cut out after long idling. I did change the tire size, that make a difference? I reprogrammed it in the tuner

B585Ford · Jul 27, 2012

7.3powerstroke00 said:
I don't know about the kem tunes but my h&s has issues with the cruise, you have to float gears from 5th to 6th in order for it to work at all.... Then if you lay into it hard passing someone you have to turn the key off and restart.... H&S told me it has to do with the torque management system on these trucks, but it sure is a pain in the a$$!

:whs:
you can also use the clutch out of 4th, let out of the clutch and slip into 6th with the H&S. When I ran a SCT with KEM 210, cruise worked fine.
I should note when I was running the SCT with KEM tune, I still had the EGR on and I selected I had not disabled it, no intake elbow, and I didn't select that I had changed the tire size even though I was running 35s.

87jumpy · Jul 27, 2012

Sucks to be y'all

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superdutyfarmer · Jul 27, 2012

I can do that too, but to keep it working through the entire key cycle is the problem, also, out of curiosity, what would the difference of ''floating'' 5-6 gear be? The last time I took the trans out I don't remember anything other than a neutral and reverse sensor. How does the truck know what gear it is in?

B585Ford · Jul 27, 2012

superdutyfarmer said:
I can do that too, but to keep it working through the entire key cycle is the problem, also, out of curiosity, what would the difference of ''floating'' 5-6 gear be? The last time I took the trans out I don't remember anything other than a neutral and reverse sensor. How does the truck know what gear it is in?

I would love to know too. Every diesel mechanic I have ever talked to can't give me an answer either.

B585Ford · Jul 27, 2012

87jumpy said:
Sucks to be y'all

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Gotta give it to ya, that was pretty funny....even if it was at my expense.:flipa:

UpstateDieselGuy · Jul 28, 2012

Hmm interesting. I am torn between a 6.4 and a 5.9 and have been reading up. I am not too worried about having a 6 Speed without Cruise Control, but it makes me wonder why certain parameters are locked out with a 6 Speed?

Chris

Johnny77Mutt · Jul 29, 2012

Yeah how does it know what gear is selected? I only had a cruise problem once, it was some wack h&s update where everything else was screwy too. I couldnt live without cruise with the amount of miles I put on, I even added it to my 7.3.

B585Ford · Jul 29, 2012

Johnny77Mutt said:
Yeah how does it know what gear is selected? I only had a cruise problem once, it was some wack h&s update where everything else was screwy too. I couldnt live without cruise with the amount of miles I put on, I even added it to my 7.3.

I just wanted to confirm that with your H&S, you have to shift without the clutch to get it to work....right?

7.3powerstroke00 · Jul 29, 2012

When I had the Xrt pro you had to float from 5th to 6th without using the clutch in order for the cruise to work, but with my mini max you can use the clutch thru all gears...... But if you go over a certain speed it kills the cruise and have to cycle the key off and on in order to get cruise again....

Dieselgeek · Jul 29, 2012

superdutyfarmer said:
I can do that too, but to keep it working through the entire key cycle is the problem, also, out of curiosity, what would the difference of ''floating'' 5-6 gear be? The last time I took the trans out I don't remember anything other than a neutral and reverse sensor. How does the truck know what gear it is in?

My guess is because there is a sensor on your clutch pedal itself... Once you depress the clutch, it kicks it out of cruise... Therefore if you float the gears, the computer doesn't know, as you didn't depress the clutch. I don't have a 6.4, but do have a 7.3 6spd, and I'm guessing the zf6 hasn't changed much since.

CAT35niner · Jul 29, 2012

Dieselgeek said:
My guess is because there is a sensor on your clutch pedal itself... Once you depress the clutch, it kicks it out of cruise... Therefore if you float the gears, the computer doesn't know, as you didn't depress the clutch. I don't have a 6.4, but do have a 7.3 6spd, and I'm guessing the zf6 hasn't changed much since.

Bingo. Exactly wat i was gonna say. Beat me to it lol. Its just like a big truck. The clutch switch in the pedal will kick it out of cruise. Same for a pickup. But since pickups have a better computer it relies on that switch to tell it wat ur doing. I no with the factory intake elbow and kem tunes with egr deleted thru tune if i floated 5th to 6th cruise never worked. U had to use the clutch. But after this past build my cruise does not work at all. Im getting inpatient waiting for a fix.

Johnny77Mutt · Jul 29, 2012

B585Ford said:
I just wanted to confirm that with your H&S, you have to shift without the clutch to get it to work....right?

Nope, I just shift normally and cruise works perfect now, even with the KEM tunes.

B585Ford · Jul 29, 2012

Johnny77Mutt said:
Nope, I just shift normally and cruise works perfect now, even with the KEM tunes.

Now I am confused as ever...we have a very similar build and the same clutch other than mine is likely an older version...your cruise works, mine doesn't. Does anyone know where specifically the sensor is?

B585Ford · Jul 29, 2012

Dieselgeek said:
My guess is because there is a sensor on your clutch pedal itself... Once you depress the clutch, it kicks it out of cruise... Therefore if you float the gears, the computer doesn't know, as you didn't depress the clutch. I don't have a 6.4, but do have a 7.3 6spd, and I'm guessing the zf6 hasn't changed much since.

That seems logical...anybody have a clue as to why it works fine in 5th but I have to trick it to get it to work in 6th?

7.3powerstroke00 · Aug 1, 2012

H&S told me the cruise issue had to do with the torque management program on these trucks...

Sensor should be on the pedal, because with my Valair dd it releases enough to shift at 1/4 to half pedal... Before I updated to the mini max I tried all kinds of shift strategy to get the cruise to work... The only way mine would work was to never even bump the clutch pedal and float 5 to 6... I would forget and just bump the pedal during the shift process and the cruise wouldn't work...

tensixniner · Aug 1, 2012

My cruise works with either H&S or KEM tunes.

If cruise works at all then it's not likely to be tune related.

Touching the brake or clutch pedal is suppossed to disengage cruise.
You'll need to hit either resume or ON and Set + to turn it back on.

If your speed changes by 10mph or more while cruise is on it will automatically deactivate.

Slipping the trans out of gear with cruise on might over rev your engine.

Early tunes from all sources had issues with cruise not working when the egr valve and/or throttle plate was unplugged.

Check the clutch pedal position switch, brake pedal switch and the connectors that use to plug into the egr/throttle plate if your egr is deleted .
Something may be shorted or open when it's not suppossed to be.

7.3powerstroke00 · Aug 1, 2012

Before I tuned mine it worked perfect, after I installed the Xrt pro with the hot damn tunes in feb of this year it would not work of you used the clutch to shift in all gears... I called h&s and they told me it was tune related due to the torque management system and the tune! They told me o shift 5 to 6 without touching the clutch... After I did that it worked fine, I now have the mini max as of July and it works fine using the clutch in all gears... It didn't matter how you did it if you touched the clutch any at all when shifting to 6th it would not work! You could release and shift back to 5th using the clutch then float back to 6th and the cruise would work just fine!