Tazz1936

I reset the ecu by touching the to battery cable together but now my truck won’t start, any suggestions?

G Atsma

Who advised you of such a reset procedure?

Tazz1936

We did it because, engine was idling very high and we changed the idle air sensor

G Atsma

So you dead shorted the battery? That's what it looks like you said....
You still didn't answer my question- who told you to do it that way?

Tazz1936

I touched the cables together but they weren't hooked to the battery, a mechanic said do it so that the ecu would set the idle air sensor

Tazz1936

I have cleaned the throttle body and the mass air flow sensor

G Atsma

You might want to look up how the idle air sensor is "set" .With no battery in the system, touching the cables to each other achieves NOTHING. There is no power anywhere to do anything. I would question the mechanic on this...

Tazz1936

G Atsma

Again, you might want to read a manual yourself to check on this. The ECU does not retain any power of its own.

Tazz1936

Ok I will go by a part store and get a manual to see what's going on with it, thanks for the help.

All Pontiac WS6

iTrader: (9)

I am an automotive locksmith here in Atlanta. When I have issues with a car not wanting to take a key program,
I have to disconnect both battery cables and touch them together for a couple of seconds. Then it will take my program.
Nissan's are the worst !!!!!
Just saying......not trying to start anything.

Tazz1936

I will try it again and see, I will update you with what happens.

G Atsma

Well OK, another one says that's what you do. I have to plead ignorance on this! lol I have a feeling touching the leads grounds everything, I guess it erases certain things. Hey I learned something!
Tazz, I hope you can resolve the issue!

LSX Power Tuning

iTrader: (4)

Touching the cables together used to be popular years ago for erasing all the learned items in the pcm, iac, fuel trims, adaptive in trans etc... it was quicker than leaving the battery unhooked for 5-10 mins.

OP...goggle IAC relearn procedure and see if that helps. If you cleaned the TB and did the relearn and it still idles high you have a leak somewhere.