Scream

iTrader: (6)

Went to Showfest in Grenville, MS this weekend. The show rocked!

To make a long story short, my buddy was driving the truck, and he was running on the high side of 100 (more like 105-110, and even up to 120 a couple of times.) When we were cruising at these speeds, the SES light came on. And stayed on, even after we let the truck sit for a few hours. After the truck sat overnight, the light went off.

We woke up the next morning and I drove from Jackson to Greenville, MS (about 3 hours)and the light never came on. My buddy drove the truck on the way home, and the light came on. Same scenario--the light went off only after sitting overnight.

The only change that I made to the truck b/f the trip was the FIPK kit--just the airbox, not the intake tube (still waiting on elec fans.)

Sorry for the long post...just wanted to see if anyone had any suggestions.

Thx, Scream

GREGGO

iTrader: (2)

Sounds like your truck doesn't like your friend. <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" /> I would bet you had a random misfire. Just get it scaned with a code reader or Autotap it. If you don't notice any other thing that is changed, it's probably minor.

Ryan23silverado

iTrader: (1)

Yup, just from what you described i would think it was a multiple misfire code that was being set off. The more RPM's turned, the more there is a chance for the computer to miscalculate stuff. If the SES light turns off, no big deal I guess. Yeah, I'd agree with Fast4.8, I think your truck doesn't like your buddies lead foot <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" />

<small>[ May 22, 2002, 06:22 PM: Message edited by: Ryan23silverado ]</small>

GREGGO

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Ryan23silverado:
<strong> If the SES light turns off, no big deal I guess. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">HeeHee, That's what I thought when I found a hole in the #5 piston. My light went off overnight. I have no idea how that could have happened either. Couldn't have been the N20 on a lean condition <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

Scream, I doubt you have a major problem. You would notice something by now.

graygmc

FAST4.8"
how did the truck run after the blown piston. could you tell real bad. i just hope that doesnt happen to me. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

GREGGO

iTrader: (2)

It seemed to run fine as far a accelaration. It just sounded like ball bearings were in the cylinder, a real bad knock.

Scream

iTrader: (6)

Thanks for the info guys! As always, you've been a great help! I told my buddy that it was all his fault! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Will the computer "save" the code even though the SES light's been off?

I'm just a little hesitant about my particular motor--my "piston slap" is the loudest I've heard and it seems to be getting worse. I'm just afraid that something's going to let go if I keep on modding it.

<small>[ May 23, 2002, 06:27 AM: Message edited by: Scream ]</small>

graygmc

FAST4.8:

do you know why you were running so lean? were you using a GMS MAF? and why didnt you SES light stay on when your piston gave out?