Alright, the rig is acting up again.
I had to take a drive outta town this weekend and the rig just didnt feel right. First off the throttle response seemed a bit off, and I noticed that with initial tip in of the throttle the RPMS would dip to 500 rpms or lower and then the fueling would catchup and the truck would rocket off. Then, at stops, the rpms are dropping to 500 rpms and sometimes low enough to just stall out. This is not a regular thing that I can reproduce over and over again, but it happens often. While stopped, if the rig didnt stall out, the rpsm will surge. The needle will just go up and down to a steady beat and stay between 1100 rpms and 4-500 rmps. If the high idle kicks on its not an issue. Does it hot or cold. I thought it might be an ICP issue so I puilled the plug and the idle sound changed a bit but then the truck stalled out. Not sure if that negates it our not.
Lastly, the truck rpms will drop to idle and then jump back up, all within a matter of a second or two and it seems to be in conjunction with the WIPERS???? All this happens at speed...slow fast...part throttle or buried... It did happen once or twice while stopped and then it just stalls. This one makes me think short somewhere....Its not consistent but I did notice that when I would activate the wipers the truck would skip a beat and then recover. this would trip a cel but cycling the key would reset the light and a scan from Orielly's revealed nothing, and they didnt have a reader that would dig far enough into the system or take real time readings.
Lastly, when i finally made it home last night, everytime I tried to plug in my block heater or my fuel heater, the GFI I was plugged into would pop. I crawled all over the truck in 10* weather outside in a foot of snow in the dark and checked each cord for breakage, chafing etc and found nothing. So I started the truck and was able after a few tries to get it to stumble after hitting the wipers and then i could plug in the heaters.
What gets me is I had a problem with the stalling a few times back in the summer when the wipers werent being used and it would stall out entirely, not just hiccup, then, magically it went away.
Sorry for the disertation, just frustrated because I need to take this thing outta town again Friday and I just dumped money into a new WP and Fuel Pump....only to have it act strange on a short 400 mile round trip...
thanks up front for any help.
its a 99, auto, DP tuner, AFE stg II, 4" exhaust, turbo mods, no EBPV, too many to really list.....