Need tunerpro XDF and ADX for 1228747 AKWA

[EagleMark]

I would be great full if your son could get me a diagram. I was going to join the alldata, but it seemed expensive for just a wire diagram.

Maybe we should all pitch in and get all the diagrams we need?

But if you get a 7747 you'll need a chip, and a limp home chip. They don't come with them... are you set up to burn chips yet? Hey, PM TunedPerformance, he had a bunch of 7747 for sale, look in classified!

[1leg]

Yes I can burn, but I would need to add a G2.

Ill look

[1leg]

Just ordered another G2 adapter from moates. I ordered the socket booster I'm going to try it before buying a 7747 just to see if it will help doubt it but at least the question will be answered for everyone. Should be here Tuesday.

[EagleMark]

You got a G2 in this 1228747?

[1leg]

yep!

[EagleMark]

Well I'm glad this test is getting done... waiting patenitly...

[1leg]

Weird thing, I had the batt and ECU unplug all night and day today, just got home, plugged everything in. No blinking CEL. truck runs normal.
What i know. Both times that i had blinking CEL was when i tried to start the truck in the morning, and cold out side, 45-55' (i know its socal and i'm a wimp).
Why only in the morning when it's cold? (i drove this truck every day last week started fine every morning, same temp)
Why does it take all night to reset? It sat for 4-5 hours with Batt disconnected yesterday and wouldn't clear the Blinking.

[1leg]

With the computer back up i was able to connect to both WINALDA and TPRT to track coolant temp. looks like WINALDA runs about 10'F cooler then the data on tunerpro rt and around 5'C cooler. Not a radical different, still seems high compared to the infrared gun. I think i will need to install a thermocouple type gauge just to verify.

[jim_in_dorris]

Sorry for not getting back sooner, I didn't see my son until this evening. It turns out that the reason I couldn't log into alldata is that the dealership where he works changed their license and the password I had is no longer valid. I will try tomorrow to drop by his work and see if it is on that computer, otherwise I have a friend that has the Mitchell repair manual manual and I will see what he can find. I just looked at my photocopy of the 87 v10 chevy pickup ECM terminal ID and is shows 4.3, 5.0 5.7 and 7.4l all using the same connectors.....

[EagleMark]

Weird thing, I had the batt and ECU unplug all night and day today, just got home, plugged everything in. No blinking CEL. truck runs normal.
What i know. Both times that i had blinking CEL was when i tried to start the truck in the morning, and cold out side, 45-55' (i know its socal and i'm a wimp).
Why only in the morning when it's cold? (i drove this truck every day last week started fine every morning, same temp)
Why does it take all night to reset? It sat for 4-5 hours with Batt disconnected yesterday and wouldn't clear the Blinking.

It has to clear codes sooner than that! Since it seems temp related it may be a bad ECM again. When you get it running good have you tapped the ECM? It is a GM test to find loose stuff in ECM intermittent issues.

Or! Wonder if you have a weak battery? Colder it gets weaker they are, could be dropping way low voltage from starter draw not leaving enough for EFI. Put a volt meter on batterey and see what it drops too when cranking cold!

With the computer back up i was able to connect to both WINALDA and TPRT to track coolant temp. looks like WINALDA runs about 10'F cooler then the data on tunerpro rt and around 5'C cooler. Not a radical different, still seems high compared to the infrared gun. I think i will need to install a thermocouple type gauge just to verify.

Infered is still on outside of thick metal being cooled by fan, sensor is in actual waterflow where it is even when thermastat is closed water is flowing there. Now if you get an accurate mechanical gauge for temp it is still going to be a little differant at differant location. But if it's differant and higher, closer to EFI reading then... I don't know... I can change the conversion in adx to add or minus some degrees but the ALDL file right now is what the adx file is... so I'm kind of at a loss as what to do? Maybe run engine till hot and stick temp gauge in CTS hole and run engine to see what it says for comparison? Mechanical gauges are more accurate, if we knew somehow what actual temp was at that spot were CTS is I could adjust adx...

Sorry for not getting back sooner, I didn't see my son until this evening. It turns out that the reason I couldn't log into alldata is that the dealership where he works changed their license and the password I had is no longer valid. I will try tomorrow to drop by his work and see if it is on that computer, otherwise I have a friend that has the Mitchell repair manual manual and I will see what he can find. I just looked at my photocopy of the 87 v10 chevy pickup ECM terminal ID and is shows 4.3, 5.0 5.7 and 7.4l all using the same connectors.....

V10 would be 1/2 ton and 1227747. He has 3/4 ton, probably V20? 1228747. That is what we need wiring for. We have the others. Thanks for the help Jim!

[gregs78cam]

OK, so I decided to look into this coolant temp issue, and by looking at the hacs it is hard to figure out how the ecm is converting volts to steps, but the ADX is not using a simple equation (like $0E, $0D et al)to convert steps to temp it is using a lookup table? I looked at the $42 stuff, and it is the same? hmmmm, why would you use a lookup table in the early stuff, and just a linear equation in the later stuff? They all use the same sensor. Wierd.

[EagleMark]

Maybe because 160 baud to 8192 baub pin E to Pin M? Size of chip?

Wonder what it would read if done without lookup table?

[gregs78cam]

Well the datastream still spits out 0-255 A/D counts, I just don't know why the .adx uses a look up table, when it would be easy to copy the .adx value from a later .adx. The reason his temp are off may be because the lookup table when graphed is not linear.

[1leg]

So the ecu could see a different temp then what I see on the datalog(adx).
The. Ecu could ba making adj, based on a 190* temp, while I'm reading 230 on the log. Do just tune tell I see knocks.

[EagleMark]

I don't know but I tried it and it does not work.

Also played back a data log from my truck $42 in his $4F since the adx is almost identical except for one bit name change... and my temps from recording were correct in his $4F adx.

So his truck is running hot! It is not an adx issue.