TunerPro User Forum

n01tk

Hey Bill, You sound very well groomed around these trucks. I do beleive grounding is a big issue. I have yet to get the truck back out on the road for a good run so the learn function can kick in. Until I do this I am not in a good position to determine the problem. I am doing some body work ( dump ...

n01tk

Hey Bill thanks for the detailed reply. I have replaced the ECU and the truck is starting much more consistant but still has a long crank time when cold. I am going to get the info you requested. Will get back to you, thanks again.

n01tk

I tested the IAC input with a noid light. The noid light flashes with engine running. Lights turning red and green if throttle is varied. Noid light does not flash when key is turned to on position. Also no flashes when key is turned to off position. Noid lights stay lite but don't flash either in &...

n01tk

I tested the IAC input with a noid light. The noid light flashes with engine running. Lights turning red and green if throttle is varied. Noid light does not flash when key is turned to on position. Also no flashes when key is turned to off position. Noid lights stay lite but don't flash either in &...

n01tk

Engine cranks 5 - 6 times when cold. If IAC electrically disconnected starts with 1/4 turn hot or cold. This engine has a rebuilt TB and new IAC motor. What could be the problem? Checked for vacuum leaks, can't find any. Vacuum measured when running, 20 "hg and steady. Any ideas?

n01tk

I did take some propane and went all the way around the base of the TBI, no change in engine speed. Discovered something interesting, when I electrically disconnect the IAC the engine starts 1/4 turn everytime? Appears to start properly. Is the IAC open when disconnected or closed. I need more infor...

n01tk

Built the smoke generator, could not find any vacuum leaks. Smoke white in color and hard to see. Measured cranking vacuum. 2" hg. This is low. Everything I read says 3 t0 5" when cranking. Drawing in air some where? Running vacuum is 15" hg momemtarly than it slowly moves up to 20 &q...

n01tk

I am now looking for any vacuum leaks which may be leaning out the fuel mixture causing a slow start. I am presently constructing a smoke generator to help identify leaky areas. Let you know how well it works. http://www.fiero.nl/forum/Forum1/HTML/081547.html The Blazer may be a different problem, I...

n01tk

Decided to buy a can of quick start. Let vechilce sit for 24 hrs and sprayed quick start down throat of TBI. The truck turned over about one turn and fired up. Halleluiah, progress. 8) Should have done this sooner. Pinched off vacuum line going to vapour recovery canister. Turned truck over and engi...

n01tk

My C3500 will not lite up quickly after sitting ( 24hrs). I installed a new fuel filter, pump, lines and TBI ( rebuilt) This truck has the long fuel pump run time (~20 secs) to ensure vapour lock doesn't occur. I installed a fuel pressure gauge and get 11 psi ( gauge cal. checked). The gauge stays s...

n01tk

Yes I can hear fuel pump running when key is in "on" position. I monitored voltage at pump when cranking, 10.5 vdc. This is what the battery drops to when cranking. Is this too low? It has a new battery which has a trickle charger continuously connected when in the shop. The voltage is 12....

n01tk

Have not got back out to garage to try this but I think this will be worthwhile test. Thanks for the reply.

n01tk

My 95 C/K 3500 turns over 10 times or more if it has not been started in the last 12 hrs. Before putting key to start position, I wait 5 secs with the key in the on position ( can hear the fuel pump running) and then turn it over. Once it starts the one time it starts quickly and runs very smoothly ...

n01tk

Yes you definitely need the correct files to be sure the sensor values are aligned. I had the same issues when I initially joined the TunerPro community. Once I loaded the proper BIN and other interface files the data agreed with my gauges and other readings. ( ignition timing etc). Took some time t...

n01tk

Thanks for all your help guys. The transmission adx for my truck is now loaded into Tunerpro. Will keep you informed to what I find. I have build a small LED indicator which shows what gear ( and lockup ) is being called for. This basically helps determine where the problem exists. If the ECM is cal...

n01tk

Wish I could help you with your tech problem. I would try other .xdf and .adx files. You may find one that works with your new configuration. As to posting pictures, they must come from an external image hosting/photo sharing web site. I joined photobucket (free) and load all photos to that site. On...

n01tk

Download A220_OE_31_tRANS_V250 from Tunerpro site to desktop. When running Tunerpro application will not allow me to load this defition. Tried loading other defition files, no problem. Is there something wrong with this file? http://i1081.photobucket.com/albums/j346/n01tk/UnabletoloadtransmissionADX...

n01tk

Not sure, have to take it for a test run and do some data logging. The gas mileage had dropped dramatically so I have to recheck now that I am running closed loop. Thanks for the interest.

n01tk

With some help from Brian I was able to get the ECU to go into closed loop control. New O2 sensor. (I could tell my the sound of the engine when it went in). Not sure what parameters on this gauge cluster are not reading at optiumn. Can anyone see any problems. :o http://i1081.photobucket.com/albums...

n01tk

Thanks for the help guys. I am now confident I am running the $31 mask.
Tunerpro r/t appears to run well using the proper version 5 $31 xdf and adx files. I can now move on to troubleshooting why I am not going into closed loop.

n01tk

No I wasn't referring to the truck running smoothly, it was the operation of the program. Sorry for the confusion. I loaded the tunerpro 5 adf and adx for $31 and it appears to be the right match. All the tunerpro functions are active and respond quickly. Still getting alot of connection errors? Six...

n01tk

Loaded the BMKN bin file from the moates site. Ran nicely with the $0E xdf and adx files. Gauges worked great, parameter tree opened and was able to look at data in different locations. Was surprised to see mask id coming up as 31 under the heading $0E parameters? Decided to run the bin using the $3...

n01tk

Thanks guys for weighing in. Yeh your right Six Shooter, you have made that reconmendation and I have tried it previously and didn't recognize any change. After saying that I will definitely try $0E mask once again. (this morning) I am still grappling with the information that I am seeing. Thanks ag...

n01tk

Still looking for a way to get a concrete means of determining my MASK ( running the 31.xdf but seems to be a bit clunky,may not be proper .xdf). ( hate to be beating a dead horse) Here are some images which may help someone determine a way ( or an idea) to get me closer to seeing what the truck ECU...

n01tk

I checked Eprom ID under scalars. I don't think I am opening up the location properly. It shows all zeros and states sixteen bits but doesn't appear active. I am connected to the ECU & all data is active. When I go over to the left hand side and open scalars a long list appears. One of the scala...

n01tk

I checked Eprom ID under scalars. I don't think I am opening up the location properly. It shows all zeros and states sixteen bits but doesn't appear active. I am connected to the ECU all data is active. When I go over to the left hand side and open scalars a long list appears. One of the scalars ( a...

n01tk

I acidently cleared all the codes when I took the neg. battery cable off while taking out my ECU. i will have to drive the truck and check for codes. One point I should mention, there was no check engine light on at any time previous to clearing the codes. I did do some investigating and found the o...

n01tk

My truck has become terrible on fuel. Noticed vechicle not shifting into overdrive (4th) and the lock-up torque converter is not active? What can I look at to try and troubleshoot this problem? A flowsheet would come in handy. Thanks for any help.

n01tk

Shows no communication errors at the bottom of the page but Tranny Temp Low etc. showing error conidition. What does this indicate?

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n01tk

Hey Six-Shooter. Read some posts from fullsizedchevy.com. I may try using the modified $0E def. file mentioned. Sounds like it is a very versitile file. How can I look at the code to be really sure what my EPROM mask is? If I take the truck into my local dealer and have them scan it would they be ab...

n01tk

Six-Shooter I tried your recomendation ( Thanx) but still getting errors. The connection is fine with the truck not running but soon as I turn it over the errors start. Could it be noise? Maybe a filter cap or shielding would help. How canI be sure when I have the proper def. files loaded. The RPM a...

n01tk

I am sorry for the confusion. I should have stated I downloaded the RT Version. Great idea, I will try using the .adx from the TP site. Let you know how I make out. Thanks for the continued support! Here is a picture of another jewel that I have owned for 25 years. http://i1081.photobucket.com/album...

n01tk

Thanks again for the reply six-shooter! I was using the older version of tunerpro and it didn't want to connect. I got up Saturday morning and thought I would take a new approach. I downloaded the RT version and re saved the def. files ($31) again from the TP site. This time being very careful to en...

n01tk

Finally able to communicate with ECU. I was not bringing .ads and .xdf files into tunerpro program properly. Also found the RT version worked for me where the older program would not connect. May have to do with my truck being a 95 or likely it may be me not understanding what format had to be follo...

n01tk

Thanks for the reply. Just getting started. I am using the 31.adx and 31.ads. Could be files are not configured properly after download. If you look at my early post I did have some trouble with the extentions changing to .txt. Will let you know how I make out. Regards!

n01tk

Received my ALDL cable today. Setup laptop but no data. Following troubleshooting guide I determined my COM 1 is active. Tried using Hyperterminal as instructed in the troubleshooting guide. Still no data coming. Called Bob at ALDLcable. He suggested looking at M pin and common (A), should see 5vdc ...

n01tk

This helps me get one step closer to seeing data!

n01tk

New! When I download the .xdf and .ads files to my harddrive (desktop folder) they appear as .txt. I have tried changing their extension back to their orginal but the tunerpro software doesn't reconize them? What am I missing? Thanks

n01tk

New to the forum. Here are some images of my ECU and eprom. The white tape over eprom window reads S131, 1618, 8020. The other side of the eprom also has a number 1345124. Thanks for any help. 1995 Chevy 3500 5.7L 4L80 16197427 http://i1081.photobucket.com/albums/j346/n01tk/SSPX0495.jpg [/img] http:...

TunerPro User Forum

Search found 39 matches

95 Chevy

IAC effecting start time

Still looking

95 Chevy cranks excessively before starting

95 cHEVY 3.5L TBI cranks excessive when left overnight

Blazer troubles

Trans1 adx loaded.

Loading pictures

Can't load transmission def. file?

Closed loop

Closed loop on Chevy 1 ton

$31 mask

BNKM $31 MASK

Chevy 1 ton mask id

PROM ID again

Eprom ID

Eprom ID

Troubleshooting odes

Chevy 3500 not shifting into 4th gear.

Why am I showing these errors?

Tried 0E def but still getting errors?

Errors streaming in?

Finally connected 95 Chevy 3500 but errors causing problems.

I will try download the .adx again.

Cannot connect to ECU 95 Chevy 3500 16197427, help!

Thanks for the help.

Downloading def files

Can anyone tell me which number is the mask for this eprom?