2003 Acura mdx cluster mph not working took it to DEALER the say ECM problem had ECM look at still not working dealer change MPH gage still not working all fuses are good .

More than likely a broken wire, corroded connector or a chafed wire.

Have your ABS system checked by a dealer, it works with those systems and she may have damaged a sensor. The dealer can plug in a scanner and figure out which one.

I wouldn't think the PCM/ECM is the problem , hesitation at about 40 mph and 60 mph.. Something in the ignition system is breaking down causing a misfire or maybe TPS - throttle position sensor , these wouldn't cost to much. The dealer should be able to find the problem . An usually lights Flickering could be loose connection , high resistance in the circuit. Fixing Strange Auto Electrical Problems

You may want to check into a recall!! If the problem occurs during accleration between 20-40 mph, Call your local dealer.

You will need to pull it ,and have it rebuilt. Need to be careful,because they usually don't touch the diff,on a trans axle rebuilt

I would get a reman from the dealer and have a shop R&R yours,then return the core.

If there is no problems with the performance of your vehicle i would just leave it alone.You should still get 20 to 30 thousand miles out of it yet.Dont fix what is not broken.

Check your manual in the glove box,maybe the previous owner wrote it down for you.Otherwise you will need to buy back the code from the Acura dealer.It's $50 for the code here where I live,you need proof of ownership too.Good luck!

You have the latest generation of Nissan's 3.5litre motor (just before they released the 3.7litre). Its very high reving and high perf'. Your 3000rpm at 70mph is normal, I have an Acura MDX 2004 with a 3.5litre Honda motor that does about the same, and I have an Infiniti M35x 2007 that is about the same.
You'll know if its straining if the gas mileage is bad. Watch the mileage as a good indicator of drivetrain issues.

you have a bad instrument cluster very common problem you can have it sent out for reconditioning .you can take it to the dealer or look on-line for a repair place

If it happens with light accelleration then there's a good chance it's your torque converter. This is one of the few weak points with MDX