i am still getting a ses light for code1320, it's the coils replaced them month back, car ran fine. this week the code came back, car runs for the most part ok, but i can't hold the rpms at 1700, it sounds almost like it's hitting a rev limiter and it will studder sometimes, but if i give it wot it runs fine, idle is perfect too, any suggestions

 

1320 code is IGN SIGNAL PRIMARY code.

If you already had the coils replaced its either another bad coil or there is an open or short in the wiring harness.

 

how can i tell which one of those problems it is?

 

bump 123456789

 

wouldn't i get a maf sensor code and not a coil code?

 

if ur getting a 1320 code its more than likely a coil--sometimes we get a p0300-306(those are misfire codes-1-6) if u get a misfire code like 301--the no 1 cylinder coil is bad if no misfire code u can isolate the coils--if the idle is ruff--start unplugging the coils 1 at a time. if the idle gets better when u diconnect a coil that is the cylinder with a problem--once u find a problem cylinder-to find out if its a coil--take another coil from a diiferent cylinder and switch them--if the problem follows that coil it is the coil--if the problem still exists in the same cylinder there is a problem with wiring in that cylinder---sounds like alot but its easy--shouldnt take that long

 

bumpin it up to get more opinions