Maxima 'changes' after ECU change...

So thanks to all your advice -- I did figure out that not only were 2 fuel-injectors gone ..but the ECU was not sending signal to one ...

I had dealership confirm all this - and got another mechanic to replace the ECU ...couple of results:

-- now with the new ECU - I could not find the exact *same* ECU model/serial# but the one I got was for the same prod-month/year also ..strange?? but anyway - the engine light is constantly ON

-- 2nd problem is that -unlike before- the car shifts very hard - too hard into 2ND gear ..a noticeable 'thud' which could give an old man whiplash!
Why is this happening?

For us regular no-access to dealer types -- once I do check the ECM long/short light flashing ..how do I know what the code means?

Does anyone have a chart explaining ECM codes?
Will re-setting the ECU help? I just learned that u can reset the ECU from inside the passenger compartment - has anyone tried?

..ok too many questions - I will stop.. hope to have it runnin smooth ..this car has been all over the NEVADA desert (mojave) and AZ ...too many memories to give up on it!!!


:icesangel

Is your new ECU from a 5 speed? If so, you'd better start hunting around for an ECU that was in a Auto.

Yes, you can reset your ECU and you should look for one for an auto or just reset it and drive it around for a couple of weeks so that it can learn your driving habits/pattern, once it does you should be fine.

No the ECU was from the same month/year/model & auto (not manual) -- the wreckers asked me all this before sending it. And their a reputed well-known auto-parts wrecker here.

I cant seem to find any posts to see

-a- what different 'funtions' the ECU is responsible for

and

-b- how the ECU could affect tranny // gear shifting... whether its modifi-able...

hmmm...

Originally posted by sursh79
No the ECU was from the same month/year/model & auto (not manual) -- the wreckers asked me all this before sending it. And their a reputed well-known auto-parts wrecker here.

I cant seem to find any posts to see

-a- what different 'funtions' the ECU is responsible for

and

-b- how the ECU could affect tranny // gear shifting... whether its modifi-able...

hmmm...

Sursh, try this site, it might help:

http://www.brianv.net/mods/ecu/