Well i just started up my new motor yesterday and it had oil pressure and idled fine except for a check engine light. so today i buttoned everything up and went to drive it and it started to lean out and lose all power. now i know that this is almost guaranteed knock sensor issues but they worked fine before the rebuilt motor. but i do have a SAFC-II installed and it is spliced into the Knock sensor 1 wire at the ECU. is this what is causing my problem and if so why or is it something else?
problems with new motor
- Thread starter mkiii88supra
- Start date
sounds familiar. I definitely think its your knock sensor. double check it by checking the trouble code from your check engine light. the haynes manual has a section on how to do it and its easy if your car has a supermonitor. simply disconnecting my knock sensor caused problems similar to what you are describing. hope I've helped
Knock sensors are delicate and expensive.
Pull the codes and tell us what you've got.
Can't help ya much without codes!
Pull the codes and tell us what you've got.
Can't help ya much without codes!
code 31 and 51
also it idles fine and when starting out driving it dones fine but it appears that once you near boost is when it just leans out. i do have an aftermarket FPR and idk if they come preadjusted or anything but i didnt touch it so maybe taht could be it?
also it idles fine and when starting out driving it dones fine but it appears that once you near boost is when it just leans out. i do have an aftermarket FPR and idk if they come preadjusted or anything but i didnt touch it so maybe taht could be it?
well i disconnected the vaccuum to the FPR and it seemed to do a little better but still around boost it just stops. i also tried to clear the codes and start over and it didnt run at all when the codes are off it seems like its getting too muchfuel at that point. could it be the AFM because that is what the one code is for?