Strange problem after conversion?

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10-31-2005, 08:40 AM
TooBlue

I have completed my conversion on my Caprice with a 6.0 with LS6 manifold and TR224 cam, comp 918springs, Pacesetter headers. 7.4 pushrods, custom programing completed, converted from a ETC to manual throttle body, 80mm,Maf still has screen, wiring is a conversion from the donar vehicle, exhaust GHL 2.5 dual no x-over at moment.

http://memimage.cardomain.net/member...3_116_full.jpg
Have a really strange problem that I can not identify. Begging for help!!!

Car starts up idles great, no problems, sounds good!!
attempts to Rev motor the motor will not accelerate past 1100rpms. This is not a attempt to drive this is just a motor idleing and rev on the throttle.

What I have checked so far:
No codes posted,,(I can force a code)
Fuel pressure 60 static, 59 at idle, 59 when attempting to rev.
Double / triple checked all wiring and connections,, metered all (checked with ohm meter to ensure no impedence)and checked them back to PCM.. All looks good
No manifold leaks, intake or exhaust,
New spark plug wires - plugs,,
Pulled motor apart check cam for walking and correct alignment and all OK.
have NOT replaced Crank pos, cam position,
New throttle pos.sens.
new IAC

With the car at this point its like getting a lap dance "TEASE" LOL

I went out to do more checking / monitoring. Used a Auto Xray and seeing some strange things that may be pointing to possible bad PCM? or programing????

Throttle position on autoxray never moves off of 0% ???
I back probe the signal going into the PCM from the TPS and the Value changes from .45 volts to 4.6 volts.. Though Auto Xray tells me that the PCM is not recognizing the input from the TPS??
Timing advance at idle = 28 degrees.
When attempting to accelerate throttle it immediatly goes to 0 to 7 degrees. Motor will only RPM to about 1300?
any thoughts recomendations????
10-31-2005, 09:03 AM
farmtruc

What wiring harness and what pcm are you using?

Year, model, service number?

Looks like a nice setup, looks very good!

allen
10-31-2005, 09:14 AM
TooBlue

Allen,, Thanks

Using the Wiring harness that came with the motor from donar Vehicle. I did the wiring /Harness conversion.

Donar Vehicle= (2002 Denali)
Had to add several wires connections for the conversion from ETC to manaul throttle.

PCM - 12200411,,
Any thoughts suggestions greatly appreciated
I am wondering it the company that did the "custom tuning" left something off of the program.

Thanks Roger,,
10-31-2005, 09:29 AM
farmtruc

Quote:

Originally posted by TooBlue@Oct 31 2005, 08:14 AM
Allen,, Thanks

Using the Wiring harness that came with the motor from donar Vehicle. I did the wiring /Harness conversion.

Donar Vehicle= (2002 Denali)
Had to add several wires connections for the conversion from ETC to manaul throttle.

PCM - 12200411,,
Any thoughts suggestions greatly appreciated
I am wondering it the company that did the "custom tuning" left something off of the program.

Thanks Roger,,

If you scan the the PCM, what calibration/VIN is in the pcm. What kind of vehicle was loaded in the pcm?

Do you know if any or all of the codes were turned off.

Did the donor vehicle have the etc tb, are you using the same pcm that came from the donor vehicle?

allen
10-31-2005, 09:38 AM
TooBlue

Allen ,I really dont have a way to See the Vin (Guess I should have bought HP Tuners or something like that! :cry: )but do know (Should have been) it was programmed for 2002.
I know that all Smog related codes were turned off.
I was also told that the ETC information was handled through programming.
The Donar Vehicle was a ETC vehicle.

Also this was a mail order tune, at the time , I did not know anyone here in Phoenix that could Bench program a 2002 PCM..
Thanks..
10-31-2005, 02:29 PM
docgreen9

TooBlue .... when you had the PCM reprogrammed did they reprogram it for manual throttle of ETC? Sounds to me like it still thinks it has the electronic throttle ... Just a guess .... I might be way off.

Nice setup though ... looks good. :thumb:
10-31-2005, 02:40 PM
farmtruc

Quote:

Originally posted by TooBlue@Oct 31 2005, 08:38 AM
Allen ,I really dont have a way to See the Vin (Guess I should have bought HP Tuners or something like that! :cry: )but do know (Should have been) it was programmed for 2002.
I know that all Smog related codes were turned off.
I was also told that the ETC information was handled through programming.
The Donar Vehicle was a ETC vehicle.

Also this was a mail order tune, at the time , I did not know anyone here in Phoenix that could Bench program a 2002 PCM..
Thanks..

What color are the plastic retainers on the pcm connectors? They migh have changed them, but for an '02 and earlier, they should be red and blue. Remove the pcm and check the color of them.
Or, an easier way, does the pcm still have the sticker on it? You should have a 411 service number for an '02, but that still doesn't mean the truck had a manual throttle cable. They did etc in '02 as well.

I'm finishing up a swap as I type, and it has an '05 5.3L in it, it was converted to a manual throttle, I'm ditching the '05 pcm and using an '02 truck pcm with a manual throttle. I'll keep you upated and let you know how it turns out.

The problem you're describing sounds like the pcm isn't setup for the manual tb, or there are some iac and tps wiring issues.

allen
10-31-2005, 06:27 PM
TooBlue

Allen ,,

What color are the plastic retainers on the pcm connectors?== Red and Blue..
This was the PCM that came with motor for sure as I was there when it was pulled.
For sure it was a ETC motor.

Found out the guy did use "LS1 Edit" on the programming. I have asked him to send me the file. Not sure what I can do with it but asked for it anyway. I am guessing that he did not flash it or change the correct parameters for the ETC to Manual TB..

On the PCM the Service number is === 12200411

Yeah let me know what you find on the project you are working on. I am getting anxious to get this running. Any suggestions are greatly appreciated !!! Roger
10-31-2005, 06:54 PM
farmtruc

Red and blue are the right ones, and the service number matches, so you have a good pcm.
Assuming nothing is wrong with the wiring and the mechanicals are good;
I'd have the pcm flashed with a stock 2002 camaro vin if your engine is an ls1, or a 2002 stock 5.3L or 6.0L is it's a truck engine, then have vats turned off.
I'd have it flashed not overwritten with a file from another vehicle.
If it starts and runs, you're good to go, have all the codes turned off and add your performance tune.

let us know,

allen
10-31-2005, 07:52 PM
TooBlue

Allen,, Thanks for the input :cool:
Yeah the guy that programed the PCM sent me the file that he used. Do you know if there is a viewer that would allow me to see what is set? My guess is there is not one available. I am convinced, at this point, that he may have just done a custom tune (based on information I provided,cam,headers,intake,ETC) including turning off Vats? I do not think it was flashed with a stock 6.0 ( non ETC truck) before he started the custom tune. Will check with him though... This is good information to keep me moving forward!!! :burnout: Roger
10-31-2005, 10:33 PM
RedHeartbeat

I have a copy of LS1Edit on my PC that I can look at it with if you send it here. Allen may still be able to look if he hasn't trashed his software. Is your MAP sensor connected? Is the brake booster hole connected? Is the IAC circuit functioning properly? Maybe it's just huge air mixture problems.
10-31-2005, 10:57 PM
TooBlue

Quote:

Originally posted by RedHeartbeat@Oct 31 2005, 09:33 PM
I have a copy of LS1Edit on my PC that I can look at it with if you send it here. Allen may still be able to look if he hasn't trashed his software. Is you MAP sensor connected? Is the brake booster hole connected? Is the IAC circuit functioning properly? Maybe it's just huge air mixture problems.

Wont allow me to attach file?? Used the browse and found the file I have stored but comes back with message "can not attach that file type"

.. The IAC appears to be working OK, Brake Booster hose plugged in with one way valve and is working correct. Map Sensor connected and according to AutoXray (Only tool I have to look at live/running @ idle data ) the map sensor is reporting in at "18in"Vac.. Will try loading file again... Roger
10-31-2005, 11:03 PM
RedHeartbeat

If you have the original email that he sent you can forward it to redheartbeat@gmail.com and I'll look at it.
10-31-2005, 11:08 PM
TooBlue

Quote:

Originally posted by RedHeartbeat@Oct 31 2005, 10:03 PM
If you have the original email that he sent you can forward it to redheartbeat@gmail.com and I'll look at it.

Sent,,,, BIG THANKS!!! Roger
10-31-2005, 11:16 PM
RedHeartbeat

C:\LS1Edit Files\rsweet.LS1
GMC TruckBroadcast Code ID = 0411
This is a 2001 GMC TruckLQ4 6.0 Liter PCM, that you didn't license

This is the error message I get when I try to open it. I don't have an unlimited license. Allen may have to look at it for you. Odd that its a 2001 LQ4 tune though. He may have a few minutes to peek into it if you can fwd the email to him. I believe his addy is allen@nelsonperformance.com
10-31-2005, 11:25 PM
TooBlue

Redheartbeat.. not sure what you mean when you say license? The place that I had do the custom tune is a Place called PCMFORLESS. I am not sure what his process was/is for programing/ license. Thanks for looking (attempting) to look at information. I sent it to Allen also..

Roger
10-31-2005, 11:31 PM
farmtruc

Quote:

Originally posted by RedHeartbeat@Oct 31 2005, 10:16 PM
C:\LS1Edit Files\rsweet.LS1
GMC TruckBroadcast Code ID = 0411
This is a 2001 GMC TruckLQ4 6.0 Liter PCM, that you didn't license

This is the error message I get when I try to open it. I don't have an unlimited license. Allen may have to look at it for you. Odd that its a 2001 LQ4 tune though. He may have a few minutes to peek into it if you can fwd the email to him. I believe his addy is allen@nelsonperformance.com

Send it on over!

I'll take a look at it. However, I have seen pcms look just fine and not work correctly. It's some kind of magic.

Even after a new flash with the genisys or ease controller, they still may be flaky.

later,

allen
10-31-2005, 11:32 PM
RedHeartbeat

When an individual buys a copy of the LS1Edit software we purchase the right to program 1 to 4 pcms with specific VIN numbers. When a tuner purchases an unlimited license they purchase the rights to program unlimited PCMs. The tuner license is so much more expensive than an individual license. My software is licensed to two PCMs I owned. Some theiving bastards stole my truck a few months back and got my company laptop and LS1Edit software/hardware as a bonus accessory.
10-31-2005, 11:37 PM
farmtruc

I can't really see anything wrong with it. Like I said, I've seen weird things happen with pcms.

allen
10-31-2005, 11:38 PM
TooBlue

Wow,, Redheartbeat,, Sorry to hear about you truck and laptop,,, dam that hurts to even think about it... :cry: :cry:

That makes sense now in regards to the license information.

You guys are amazing with the responses Quick wealth of info....
10-31-2005, 11:40 PM
TooBlue

Quote:

Originally posted by farmtruc@Oct 31 2005, 10:37 PM
I can't really see anything wrong with it. Like I said, I've seen weird things happen with pcms.

allen

Okay thanks for looking at the information Allen. I will purchase another PCM and try again!!!!
11-04-2005, 01:32 AM
TooBlue

Allen, RedHeartBeat,, THANKS,, THNANKS,,THANKS, for all of the assistance.!!!! Bad PCM was the problem!!!!!... The symptoms were really strange as mentioned above. Just wanted to make sure to THANK you guys for all the suggestions and assistance in Diagnosing the Car. It runs and runs very well. Got to take this thing out and drive it finally!!!!. Still have to put the gears and posi in that are currently sitting on the shelf and I should be good to go. Took it out on the back street from the house and flashed the throttle a few times.. :lol: :lol: :lol:

Got home and the wife had the back door open letting the cool air in and she says "whats that burning rubber smell" I told her is was called PROGRESS.... LOL Roger,,
11-04-2005, 09:18 AM
farmtruc

Glad you got it running! Keep us updated on the progress.

later,

allen