data log of my idle problems

[jim_in_dorris]

Well, I got off my duff and decided to try to see what my idle problem is. My truck has always had a stumble at idle. Multiple tuneups have not cured it, and I am getting curious about what is going on.
I did this log on my way to and from the dump today. Details... stock 305 (i think) 700R4 3.73 gears 30x9.50x15 tires. The truck has always run lean, but today I am curious about idle.

7747 tpv4.14 (I can't get 5 to connect)

[EagleMark]

Wish I could help Jim, but I can't even open a adl file?

Here's instructions how to set up TPV5 cable connection. The $42 adx should be no issue.
http://www.gearhead-efi.com/Fuel-Inj...to-TunerPro-RT

I'm leaving town tomorrow for who knows how long? But will be checking internet. If you can get a TPV5 xdl log I'd be glad to help.

[jim_in_dorris]

Thanks Mark, I have been thru that a half dozen times. I even tried a different laptop. No love. I have to believe that the cable I built is the problem, but I have no budget for a new cable right now as my work hours got cut.

[EagleMark]

PM me your address, I'm sending you a cable. When you can afford one send it back.

[Rally Smith]

Jim I have the same problem. I have a 95 K1500 5.7.
I noticed last weekend when I was data logging that the spark was really jumping around when the idle was stumbling. Mark, could the spark be causing this issue?

Jim, I don't mean to highjack your thread but thought we might be dealing with the same issue.

[EagleMark]

Jim I have the same problem. I have a 95 K1500 5.7.
I noticed last weekend when I was data logging that the spark was really jumping around when the idle was stumbling. Mark, could the spark be causing this issue?

Jim, I don't mean to highjack your thread but thought we might be dealing with the same issue.

No it's not the same issue. The spark jumping around at idle in the $0D C4 type PCMs is normal. It's controlling idle RPM.

[jim_in_dorris]

I captured the last part of my tpv4 log on Jing. You can look at the video to see if anything looks wrong. I think I may have a throttle body problem, but not sure.

video

[EagleMark]

I captured the last part of my tpv4 log on Jing. You can look at the video to see if anything looks wrong. I think I may have a throttle body problem, but not sure.

video

That was strange watching a video! I kept trying to click on and move stuff...

The IAC count is low, RPM was a little low and then towards end of log looks like IAC count went to nothing? So yes it could be a worn throttle shaft causing a vacuum leak? I think 50 RPM to idle would do wonders.

Will be able to help more when you get a TPV5 log. I wonder if there are any issues running TPV4 and TPV5 on same PC? I remember years ago I could not get TPV5 to work on a PC with WinALDL?