Does anyone know if MD159964 will work for MD159966 on 91 RT/TT??????

 

http://johnmonnin.netfirms.com/ECUpartnumbers.html

 

I replaced the caps in the ECU, and the car runs good not great but only without theMAF connected when I connected the MAF I can hear the fuel pump relay clicking on and off and the car will die without throttle help any, I alreayd put another MAF in the car and it still does the same thing, I think I just may have a bad ECU. Any ideas will be greatly appreciated.

91 RT/TT

 

Is there anyone you know local with a compatible ECU? Maybe they would let you swap it out just to see if that is in fact the problem.

 

I wish there was but no, It almost has to be a prob in the ECU other than the caps, that or another bad MAF

 

Yeah, it could be 2 bad MAF's...but what are the chances.

Sometimes you can find ECU's at places like OReilly, Autozone, NAPA, etc. I bought one for my TT at OReilly for about $250.

If the caps leaked enough, they could have shorted one of the daughter boards out, or ate through the traces in the PCB. Who replaced the caps on your ECU?

 

I did, I'm a Ford Tech @ a Lincoln Mercury dealership so i have knowledge of soldering. Thanks for the link of ECU #s but when i bought the car somone had already been in the ECU and the 2nd # is gone all i know is that its a MD159966 and i found a MD159964 do you think it might work?

 

It's worth a shot, but honestly I don't know.

 

Thanks for your help

 

NEW TO THE FORUM, OWN A 92 RT TT, WHAT IS A MAF?I UNDERSTAND THE ECU,BOT MAF??

THANKS
ROB
ONTARIO,CANADA