New to the trade looking forward to tuning some GM efi transplants onto some I.H.'s

[autoekim]

I am going to try and setup some proms to work on a GM throttle body setup added to an older International Harvester Scout. I'm going to be using the ecm 0227747 for the setup. the basic setup runs the truck but has some things that need to be adj. the cold start, a few code popping up etc. Any suggestions to start out would help me alot I have tunerpro rt and a scanner also a chip burner "PCB6.0E KEE Willem EPROM Burner"

[dave w]

:welcome:

I would suggest getting up to speed to TunerPro RT http://tunerpro.net/downloadApp.htm (suggested $39 donation) for data logging. The price of ALDL cables vary, but usually less than $60.

Post the data logs and .bin file your using and we can suggest changes.

dave w

[autoekim]

Hey i have access to either a vetronix mastertech scanner or a tech one will tunerpro rt interface with either of them for data logging?

[EagleMark]

I've never seen that done and doubt it very much.

Here's a link for cable:
http://www.gearhead-efi.com/Fuel-Injection/showthread.php?1592-Support-The-Forum-Buy-ALDL-Cables!

[dave w]

Hey i have access to either a vetronix mastertech scanner or a tech one will tunerpro rt interface with either of them for data logging?

Unfortunately, No. TunerPro RT is software for a Laptop computer. The ALDL cable is connected the Laptop USB port on one end of the cable and the other end of the ALDL cable is connected to the same diagnostic port in the vehicle that a scanner would be plugged into.

dave w

[autoekim]

Well i just figured out how to read the chip out of a junk ecm 92 s10 blazer 16144288 ecm and got it and the correct xdf file and was able to read it so hopefully I'm on my way. Had some troubles getting my eprom burner to see the chip because i was unsure of what type it was there are no numbers accept a 32 in the part number on the chip which aparently is a 2732a chip as i identified as the one on this forum. then i was missing 1 jumper on my eprom burner, once i got that all figured out it read the chip. how long and how much ultraviolet light do i need to erase the chip?

[dave w]

I go about 20 minutes to erase a chip. Many 1990 and newer chips are 2732b, which burn at 12.5 volts.

dave w

[EagleMark]

My UV eraser has a timer and it's been set to 18 minutes... forever. Well since I found that you can over erase and the chip is worthless. So as little as possible.

You can also buy new ST 2732a chips from Hong Kong off eBay. They handle erase way better then the stock GM chips.

[autoekim]

Ty for the reply!:innocent:

[autoekim]

Another question could a cardaq+ be used for data logging on a obd1 system?

[EagleMark]

Any scntool can help you get data for tuning. The Scandaq is awful expensive so haven't seen it used.

The benefit of TunerPro RT software for tuning is, it is a tuners software tool, the data can be put into history tables and used however you want. Can also set up data tracing so when looking over a log you know exactly where you are in the bin/chip to make adjustments. Half of TP is for adjusting bin/chip and the other half is Data and they work together.

[autoekim]

Ok i found out from drew tech that the cardaq+ will not work.

[autoekim]

Ok i have the vehicle now it has a stock gm "anlw" bin out of a 1227747 ecm. I have driven it a little bit it is kinda dicey driving it as it has expired tags, it wont pass state emissions test.
I did record the data and have a tunerpro log file I have attached both in this post. could someone look at them and give me some direction on this. I have read and reread the forums here but I just would like some first time help to get a solid understanding of what i am doing.

The vehicle is a 1975 scout 2 with a 345 v8 it has been converted over to a gm tbi setup but at the moment does not have timing controlled by ecm.

[dave w]

Ok i have the vehicle now it has a stock gm "anlw" bin out of a 1227747 ecm. I have driven it a little bit it is kinda dicey driving it as it has expired tags, it wont pass state emissions test.
I did record the data and have a tunerpro log file I have attached both in this post. could someone look at them and give me some direction on this. I have read and reread the forums here but I just would like some first time help to get a solid understanding of what i am doing.

The vehicle is a 1975 scout 2 with a 345 v8 it has been converted over to a gm tbi setup but at the moment does not have timing controlled by ecm.

What I saw, was several lean BLM's. I made a few changes to the VE table to correct the lean BLM's.

dave w

[EagleMark]

ANLW was superseded to ASDU... so maybe start with the updated chip?

[autoekim]

Thankyou for the changes i will burn it to a chip and try driving it some more, and record some more data and see how it reacts. By the way it was failing for hi CO and real high HC,

[dave w]

By the way it was failing for hi CO and real high HC,
I would strongly suggest using ECM Spark Control.

dave w

[autoekim]

OK I burned the file on to a 27sf512 chip and pop it into my modified ecm that i socketed with the end 2 pins on each side connected to pin 26. I turn on the key and the check engine light just flashes fast. The truck does start and run though. I did some more research as how to burn the 27sf512 for this application and it would seem that i burned the program to the wrong area of the chip so i burned another with an offset of 00F000 which put the bin at the end of the chip. I inserted the new chip in the ecm, same thing CEL fast flash but runs. so i put the original ECM in and the original prom and the CEL still flashes fast. Anyone experienced this? also i can not connect to it now with a scanner or my aldl cable.
Also i checked out the distributor and ignition module and it is hooked up to control timing however the reference low from the ign module is connected to ground and the pin on the ecm is not connected to anything, Is this a problem? Also the distributor still has mechanical advance. The Mechanical adv should be locked down so that it cant advance the timing correct? Another thing, it has no VSS input.

[autoekim]

I guess i had put the wrong prom in the original cause i found another one and it works normal so what could i have done wrong with the 27sf512 chip?

[autoekim]

Well i removed the modification from the socket and made it to the chip itself and now it is working. While i was working on the scout last weekend i discovered that the distributor did not have the mech adv locked down, so i welded the weights down. Also i found a vacuum line that went to the passenger side valve cover to the intake. it is not the PCV tho because the pcv is in the intake at the rear of the motor correct? I removed the vacuum line from the valve cover from what looks like a crankcase vent. after doing this it does not want to idle very well it only wants to idle at 550 to 600 rpm's after it is warmed up. Sometimes it just dies. Should i raise the idle in the bin, or try to set a base idle on the throttle body. I am not sure what the proper thing to do is. Also i am using the ftdi rl232 chip for my data logging and i am getting errors, it appears that the connection is not stable is there something i can do to improve this?

[EagleMark]

The PCV is supposed to come from the grommet off the valley pan to carb, or in TBI case front of TBI. The line from valve cover to air cleaner is the breather. You must have a breather or you will suck all your gaskets in... or first one that fails...

Idle RPM is set in bin, throttle plates are for min air only. The IAC controls Idle RPM through ECM.

[autoekim]

Thank you Eaglemark. I believe i found my connection stability problem also, I was using a cheap inverter on my laptop.

[chicodave]

I am newby too. I was wondering which IH engine you are working on, its it the slant 4 or a V8? I have been following along learning from your tinkering. -Dave

[autoekim]

345ci v8

I have decided to cough up some dough and ordered a Moates autoprom setup. It is supposed to be here on monday. I am hoping that i can spend more time tuning and less time trying to make my equipment homebrew crap work. I will continue to post here and let you all know how it is going. There is a lot of good info on tuning on the Moates website. So its time to hit the learning material and see if i can keep from turning this Scout into a pile of molten slag!

[autoekim]

Well i haven't had time to play with the scout but did get to set up a 95 LT1 motor in a 92 camero. The Autoprom worked flawlessly. I also hooked it up to the scout last night it also hooked up easaly and worked the first time. didn't get a chance to play with it at all, it was late. More to come later.

[autoekim]

well got it all running good except it has a surging idle out of gear, in gear it is fine any ideas?