Stumble/Miss/Hesitation

[hampsterzone]

Does your truck throw any codes when this happens? How about fuel quality? Is it possible you have bad fuel, water in it, bad fuel filter? If it were me, I would add some water remover, premium fuel, new filter, and octane booster. Why? Cuz this could very well fix your problem and even if it doesn't it still will be good for your truck. A very cost effective fix or atleast a beneficial way to rule out a problem. Hope this helps.......

[mkehler]

More on the issue; it seems to happen most at around 25-30mph, rpm around 1500-1600.

I also have noticed that at idle (it is also missing at idle), that the spark advance is not steady, it is constantly moving around from 11 to 18 degrees. This is cold, warmed up, been running for an hour, it doesn't matter. Definitely not good for a stable idle.

Matt

[lbjailer]

Can someone please have Bill look at my Trouble Ticket, #94? I need to know if it is safe for me to plug my Gryphon in. I purchased a tune change at the same time I entered a trouble ticket about rough running. Theres been no action, and now I'm afraid to plug in the Gryphon. I cut and paste the results of the data reading from my Gryphon and it doesn't look right.

[Jackpine]

Originally Posted by lbjailer

Can someone please have Bill look at my Trouble Ticket, #94? I need to know if it is safe for me to plug my Gryphon in. I purchased a tune change at the same time I entered a trouble ticket about rough running. Theres been no action, and now I'm afraid to plug in the Gryphon. I cut and paste the results of the data reading from my Gryphon and it doesn't look right.

If you're asking, "Is it safe to plug the Gryphon into your truck?", the answer is YES. As long as all you do is plug it in, it simply acts as a monitor and cannot/will not modify anything in the PCM.

But if the question is, "Is it safe to program my truck?", I don't know. I'd have to know more about the "rough running" problem. Did you have it on all tunes? If it was just one tune, I'd stay away from that one unless you want to do more troubleshooting.

However, if there was never a question of getting the truck started after a tune, I can't imagine it would be dangerous to try a tune again. What did Bill tell you when the problem first surfaced?

- Jack

[lbjailer]

Hi Jack,
2 days (October 28th) after I submitted the ticket it was replied to from Bill. At the same time I also purchased a new tune. Since then I have not heard anything. I know I can plug it in and just use it to monitor functions on the truck, but because of what the log says (see below), I don't want to risk programming a tune. Luckily I had returend to stock.

Here is what my data reteivel says about the Gryphon.


The file -> stock_0.bin <- was not located.

The file -> stock_cs.bin <- has been stored as:
C:\Program Files\Power Hungry Performance\Pegasus Update Client\Data\1863_2010-12-27_12-55-13_stock_cs.egc

The file -> level1_0.bin <- was not located.

The file -> level2_0.bin <- was not located.

The file -> level3_0.bin <- was not located.

The file -> custom.bin <- was not located.

[Jackpine]

I'll see if I can get something off my Gryphon to validate what you got. At the moment, we're about to go out the door, so it will be tomorrow before I get back to this.

- Jack

[lbjailer]

thanks