Any updates on the Shogun reset?

[Felixdacat]

I'm think of doing this tonight, and wanted to know if good long term results are still happening?

[winfred]

all it does is clear the memory of the computer, if theres a problem the computer will relearn the bad habbit and return to the way it was running in a few days

[Blitzkrieg Bob]

you've changed something like a sensor, injectors etc.

The memory is wiped and the system can learn the new stuff.

[winfred]

after a few days of run time it would adjust anyway, it's going to run how it wants to run

[Blitzkrieg Bob]

like to see the results of my labor

[Felixdacat]

Well I did put new 19lb injectors in a month ago, and didn't notice too much of a difference, and my engine runs a little rough. I changed plugs, cap and rotor, and did an oil change. My car likes to hunt a little while warming up, and while sitting at a light. This was happening before a tune up. BTW the tach does not move when the engine hunts....It likes to hunt deer, and bear. Will be waiting for Jeff to make a great comment about the hunting.

[Blitzkrieg Bob]

that's what could be causing the hunting

[Felixdacat]

I have been reading some of the post here, and was wondering if the IAC would cause this also. I will look for the Vac leak. I think my oil pump is going bad, ticking at bottom end. Not rod knock. So I'm going to pull the pan, and replace the pump, the timing chain, and do valve adjustments.

[mamilapon]

What's the idea behind shorting the battery cables and turning the key to pos 2?

[SRR2]

There IS no idea behind shorting the battery terminals! There's no basis in fact for doing it. None. Nada. Zip. With a few minor exceptions, all the key switch does is energize a relay that supplies power to the car's systems. Without power to the switch at the key, that relay doesn't energize, so turning the key accomplishes exactly *nothing*.

You will reset everything that needs resetting by simply disconnecting the negative terminal to the battery and leaving it off for a couple minutes. That's enough for any load using battery keep-alive to self-discharge.

If you were smart, you wouldn't disconnect the battery at all, since it's such a nuisance to re-set all the things that 'forget' like clock, OBC values (range, mileage), seats, radio, etc. It's much easier just to pull the connector off the ECU. It's four screws to take the cover off, and then pop the connector off. Couldn't be easier. Give it a minute and reassemble.

[Alexlind123]

There IS no idea behind shorting the battery terminals! There's no basis in fact for doing it. None. Nada. Zip. With a few minor exceptions, all the key switch does is energize a relay that supplies power to the car's systems. Without power to the switch at the key, that relay doesn't energize, so turning the key accomplishes exactly *nothing*.

You will reset everything that needs resetting by simply disconnecting the negative terminal to the battery and leaving it off for a couple minutes. That's enough for any load using battery keep-alive to self-discharge.

If you were smart, you wouldn't disconnect the battery at all, since it's such a nuisance to re-set all the things that 'forget' like clock, OBC values (range, mileage), seats, radio, etc. It's much easier just to pull the connector off the ECU. It's four screws to take the cover off, and then pop the connector off. Couldn't be easier. Give it a minute and reassemble.

I agree with the second a third paragraph, there is nothing to be gained from shorting the connectors. Removing the ECU will reset it, but what about the transmission computer?

[Blitzkrieg Bob]

It seems to clear most of the systems except the SRS

[SRR2]

SRS uses nonvolatile RAM. Disconnecting the battery doesn't do anything to it.

I tend to think of manual trans. Haven't owned an automatic for several decades, actually, and don't miss them. IIRC, the auto controller is right next to the ECU in the E34's elex box, is that right? In that case, if you wanted to reset it, it would be 5 seconds extra work to pull the connector off that too.