Megajolt Lite Jr V4 timeout reading cylinder count

pitcrew6464 · Post by **pitcrew6464** » Thu Nov 25, 2010 12:53 pm

Hi all im new to the world of megajolt and am having a few beginners problems, hopefully you can help me ive gone through pages of searches but yet to answer my question

i have installed V4.0.2 and installed my usb parrallel reader but when i open up the software it shows in the bottom middle a message "timeout reading cylinder count" i have tried 2 diffrent ports on my laptop currently running windows vista, i hope you can help

Thanks

Post by **brentp** » Thu Nov 25, 2010 7:37 pm

Hello!

First thing- make sure the serial adapter is showing up under Windows 'device manager'. Note the COM port shown for you adapter and make sure the configuration software reflects this setting.

This part of the Operation Guide will detail these steps:
http://www.autosportlabs.net/MJLJ_V4_Op ... erial_Port

Let us know how this works out!

pitcrew6464 · Post by **pitcrew6464** » Fri Nov 26, 2010 11:33 am

Hi i have gone through the steps checked with multi meter the correct pins to the parralell port go into the mega jolt set correct com number (COM 10) and then applied a 9v battery illuminating the light on the box started the program up again and still the same message

NITROPIXIE · Post by **NITROPIXIE** » Fri Nov 26, 2010 11:56 am

Can you get to a desktop pc with a dedicated serial port to confirm your megajolt can operate? You can power the unit using a 9V battery so you don't have to drag your desktop pc to your car.

It maybe a serial adaptor issue at the moment as they can be awkward at the best of times. I managed to get hold of an old laptop with built in serial connector which works a treat, except the battery in it doesn't work

pitcrew6464 · Post by **pitcrew6464** » Sat Nov 27, 2010 9:01 pm

perfect stright in with the parallell and now works thanks for the great advice all

now the hard bit need to find the manual lol

pthm · Post by **pthm** » Wed Oct 05, 2011 1:49 pm

I had the same issue, it was more present when the vehicle was running ended up being the EMI (electromagnetic interference) that is present in all high voltage systems and the serial cable was catching the EMI and creating to messy of a signal.

so the way I fixed this was to wrap aluminum foil around the wire from one end to another and then ground it to the vehicle by using an alligator clip.

now I can sit inside the car while running and tune away and play with the settings

Post by **brentp** » Wed Oct 05, 2011 2:57 pm

Interesting results with your shielding!

speedmerchant · Post by **speedmerchant** » Wed Oct 12, 2011 10:42 pm

Had the same issue. Read my post and my fix. Might work for you.

Best,

Jeff