Ucon ems

[butters607]

You should datalog it while it's running those few seconds

 

[dramad1]

I took it out. Should I put it back in? How do I data log it? Do I need to hook my lab top to it or can I use just the USB. What kind of connector do I need. USB to serial port?
I have went through the whole truck and still do not know what the issue is.

 

[Gadget]

Leave the UCON alone until you get the problem fixed.

G

 

[dramad1]

So I put a brand new efi relay in and a new fuel pump relay. Still, starts then dies.
Few things I'm gonna look at closer this weekend is the plugs on the stock ecu, a while back I had a maf cal wired in. Maybe one of the wires came loose there? Leaving an open circut?
If not that then?ignition coils and still the maf sensor code p0102.

 

[L3G10N]

someone more knowledgeable than me needs to chime in here but:

aftermarket alarm?

what about the skim codes or whatever they are on the keys themselves. any way the programming/matching was lost?

 

[sdxrunner619]

someone more knowledgeable than me needs to chime in here but:

aftermarket alarm?

what about the skim codes or whatever they are on the keys themselves. any way the programming/matching was lost?

The truck would never catch. It would just crank, and crank, and crank, If it was a transponder related issue.

 

[Gadget]

The truck would never catch. It would just crank, and crank, and crank, If it was a transponder related issue.

No, it will fire and then shut down after a couple of seconds.

G

 

[dramad1]

I just tried to start it with my other two sets of keys and same deal. I don't think it's my alarm or transponder issues.
It's gotta be a wire or ??????

 

[sdxrunner619]

No, it will fire and then shut down after a couple of seconds.

G

...Hmmm. no. I belive Your thinking of push to start Toyota's/Lexus

You can confirm that its not a transponder issue by watching the security light under the radio. If it continues to flash while cranking, you can confirm it is in fact a transponder issue. Which I highly doubt....

 

[butters607]

What intake do you have

 

[dramad1]

Afe stage2 si. Hmmmm..

 

[L3G10N]

No, it will fire and then shut down after a couple of seconds.

G

that's the behavior i expected.

dunno...

 

[dramad1]

Well I just spent the whole morning tracing wires. I was able to clear out the p0102 code as I found two wires from the maf cal install that where loose. I am still getting codes p0351 thru p0356. I removed each coil and inspected it. I do t have a volt meter. Then reinstalled. Still popping same codes. I've tried clearing codes as well as disconnecting battery for twenty mins. Codes just come back. Car starts then dies a few secs later.
Not sure where to go from here. All codes also show as pending. I don't know. I have replaced all the fuses/ relays. Is it possible all 6 coils are bad?
Also is it possible that I have an air or vacuum leak that could be tripping these codes. I have inspected the coil, plugs, wiring and do not see anything to suspect open circut or faulty connection.

 

[L3G10N]

Afe stage2 si. Hmmmm..

why is this important?

 

[dramad1]

What intake do you have

Cause he asked.

 

[Torspd]

You are running a Maf Cal and the UCON at the same time?

 

[dramad1]

You are running a Maf Cal and the UCON at the same time?

No maf cal. I used to have the maf cal installed, I was thinking one of the wires when I spliced into the ecu may have came loose. I have checked all wires and they appear to be okay. One loose wire and I got that all fixed.
I also have removed the ucon since it is not the issue.
Pretty much just getting codes p0351 thru p0356. I have checked all the plugs and coils themselves as well as the ignition fuses the efi and fuel pump relay, the injector coil fuse am2 I believe. I have tried clearing the codes as well.
Now I'm thinking of replacing one coil and seeing if it clears that code and if so, I guess replace all the coils.
Not sure where to go from here
Is there an ignition coil wire that goes to the ecu that I can check? Color wire?

 

[T4C0CH40S]

Well I read over this thread from the beginning and have added the UCON to my future list of mods :biggrin:

just curious tho, did dramad1 ever figure out the problem was and get his truck running?

 

[dramad1]

Well I read over this thread from the beginning and have added the UCON to my future list of mods :biggrin:

just curious tho, did dramad1 ever figure out the problem was and get his truck running?

I have no idea what caused all 6 ign coils to fail. After testing all wiring etc etc, I swapped out the coils and am back up and running again. Urd's tech support was awesome, I sent my ucon back to g and he ran a few test and found there was an issue with the unit not reading the maf signals. He sent me a new unit as well as 6 spare coils he had laying around, I have not reinstalled it yet. I plan to with in the next few weeks. Just waiting on a few more parts for other mods I'm doing.

 

[T4C0CH40S]

well thats good to hear man! glad it got sorted out and hopefully you get it back up and running soon :top: just more good rep for URD!