Crazy serial data! Now with video

Discuss anything TunerPro related.

Moderators: Mangus, robertisaar, dex

Post Reply
drumer919
Posts: 22
Joined: Sun May 17, 2009 4:09 pm

Crazy serial data! Now with video

Post by drumer919 »

Read post 4 please, its got the video!
Last edited by drumer919 on Sun Sep 06, 2009 10:52 am, edited 1 time in total.
Dan- ASE certified-A1, A4, A5, A8
95 S10 ecsb, 350, 9.5:1, ported Vortec heads, Crane(.484/.512 272/284 112LSA), OBD2 L31 intake, Hooker LT's, 2.5"ORY, Flowmaster 40, 4L60E, 8.8 posi w/ 3.73's, WBO2, '7427 PCM running in PFI mode, $OD.
robertisaar
Author of Defs
Posts: 962
Joined: Sat Feb 21, 2009 3:18 pm
Location: Camden, MI

Post by robertisaar »

running like crap might be to it being untuned.... or the fact that you have it firing on every reference pulse. when doing something like a TBO to MPFI conversion, its best to keep the tune as stock as possible when you first get it going, that way you can rule out other changes as the problem.

and i'm going to guess that the PnH resisitors were for the injectors? like you moved from low impedence to high impedence or its reversed, something like that?
drumer919
Posts: 22
Joined: Sun May 17, 2009 4:09 pm

Post by drumer919 »

robertisaar wrote:and i'm going to guess that the PnH resisitors were for the injectors? like you moved from low impedence to high impedence or its reversed, something like that?
Exactly, then Peak and hold resistors in the injector drivers are for the TBI injectors, to go MPFI you have to remove them and replace with jumpers. Before I did this my tune was almost spot on with BLM's within 2 at all times so the only things I changed in the tune was the IFR's and enabled PFI mode.

The engine is running a lot better now, it wont idle though but my IAC is bad, as long as I crack the throttle a little its fine.

Mainly I'm just trying to figure out whats going on with TP and why its logging slow, the rest I can figure out.
Dan- ASE certified-A1, A4, A5, A8
95 S10 ecsb, 350, 9.5:1, ported Vortec heads, Crane(.484/.512 272/284 112LSA), OBD2 L31 intake, Hooker LT's, 2.5"ORY, Flowmaster 40, 4L60E, 8.8 posi w/ 3.73's, WBO2, '7427 PCM running in PFI mode, $OD.
drumer919
Posts: 22
Joined: Sun May 17, 2009 4:09 pm

Post by drumer919 »

I posted this on TGO but its s strange problem so I wanted to post here too so maybe a few more people would see it.

I have had this problem since I did my MPFI swap, I have tried everything I could think of to fix it, different PCM, un-install and reinstall TPRT and Scannerpro. Today I did the one thing I hadnt yet, replaced the wire from the PCM to the OBD2 port. I have also tried a different computer. I think I may have a bad cable but haven't heard from Craig yet about what I can do.

This is a video of what ScannerPro displays, its alot more interesting than the TPRT dash, that only shows little bits of data every now and then, with SP its jumping all around. The truck runs fine and in the video its KOEO but it does the same thing running or not. The top left gauge is the tach.

I dont have a video of TPRT doing it but I do have a few logs of it I could email anyone of they want to see.

What the hell is going on? I need to log!
Dan- ASE certified-A1, A4, A5, A8
95 S10 ecsb, 350, 9.5:1, ported Vortec heads, Crane(.484/.512 272/284 112LSA), OBD2 L31 intake, Hooker LT's, 2.5"ORY, Flowmaster 40, 4L60E, 8.8 posi w/ 3.73's, WBO2, '7427 PCM running in PFI mode, $OD.
User avatar
honken
Posts: 111
Joined: Wed Dec 15, 2004 6:05 am
Location: sweden

Post by honken »

Maybe somthing wrong on command string in the adx editor in scannerpro.
drumer919
Posts: 22
Joined: Sun May 17, 2009 4:09 pm

Post by drumer919 »

What would I do about that? why would it do it after a clean R&R and on a different computer?
Dan- ASE certified-A1, A4, A5, A8
95 S10 ecsb, 350, 9.5:1, ported Vortec heads, Crane(.484/.512 272/284 112LSA), OBD2 L31 intake, Hooker LT's, 2.5"ORY, Flowmaster 40, 4L60E, 8.8 posi w/ 3.73's, WBO2, '7427 PCM running in PFI mode, $OD.
User avatar
honken
Posts: 111
Joined: Wed Dec 15, 2004 6:05 am
Location: sweden

Post by honken »

Did scannerpro work before the swap?
If not i have a adx that works.
drumer919
Posts: 22
Joined: Sun May 17, 2009 4:09 pm

Post by drumer919 »

Yes BOTH scannerpro and TunerPro RT worked fine till I did the swap, thats when they both started. I have tried putting the un-modded PCM and memcal back in just to see if I could log then, even thought it didnt run like that, and still the same thing. I think it has to be an unrelated problem that just happened to start at the same time I did a bunch of work.
Dan- ASE certified-A1, A4, A5, A8
95 S10 ecsb, 350, 9.5:1, ported Vortec heads, Crane(.484/.512 272/284 112LSA), OBD2 L31 intake, Hooker LT's, 2.5"ORY, Flowmaster 40, 4L60E, 8.8 posi w/ 3.73's, WBO2, '7427 PCM running in PFI mode, $OD.
Post Reply