I was trying to help a friend out with his tpi car who lives in another state. This is in a 8d mask, He just experienced a code DTC - 53 System voltage too high. He replace his alternator and cleared the codes and no while driving for a while he gets a DTC -88 Internal reset of Electronic Control Module (ECM) and the car dies. I have never seen a code 88 on a 1227730 must be in the firmware? I assume the bad alternator voltage spikes killed the ecm? He also said he has a DTC- 98 - Invalid PCM program and map code 33, To try to help this guy out and I gave him a v6 memcal that I did a cylinder select mod and has to solder in a 27c256 into the memcal. it was working great until he got the code 53.any thoughts on this? I did not think this ecm could produce the codes and maybe its a flash miscount on his part

 

Codes 88 & 98 don't exist in $8D. So if they are being blinked out the ECM is likely toast.

The code 53 over voltage is: greater then 17.1 volts for more then 200 milli-seconds. The ECM will shut down the quad drivers on a code 53, but won't itself shut down.

RBob.

 

Thank you rbob, thats what I though but did not know for sure.

 

what i assumed as well! after hours of headaches and days of bad luck with my swap . . ..

thanks to both of you!