1989 F150 ECU questions.

[chris401]

I finally received the new, rebuilt, ECU.
Installed the part and the truck runs very well, without any hickups, like before.

I just hope it lasts more than one year, like so many other aftermarket/replacement parts.

Thanks for all the good input for this situation.

Have a great day.

If you have a scanner (not a simple code reader) you can see the pid values the computer sees and produces. It is a good habbit to go through the tedious task of checking the grounds related to your problem. I was ready to replace one on an early 1996 F-250 when I discovered the ground signal to the EGR position sensor only worked when I unplugged it and bent it up to test with a meter. It is not often an ecu goes bad but possible. I would say Ford's 4 and 5 systems are more likely to quit switching a ground signal before other makes. The MaxiSys MS906 BT is a decent machine and not super expensive. It will come with the Ford connector and other common early adapters. Even one for your Maxima. Do you still have that car?

[cleandan]

Thanks for the information.
I never had a Maxima. You must be thinking of another person.

[chris401]

Thanks for the information.
I never had a Maxima. You must be thinking of another person.

Ok, someone on this board was having problems with a modified Nissan.

[BattlestarGalactic]

I remember, though can't say who it was either.

[chris401]

Thanks for the information.
I never had a Maxima. You must be thinking of another person.

It was the other guy on the other forum. https://www.fordfe.com/viewtopic.php?f=74182&t=113027&p=1061795&hilit=Nissan#p1061795