I have a bone stock 03 Civic EX with 19,000 miles on it. about a week ago i noticed that it lost what little power it had to begin with haha ... in 3rd gear and higher it struggles to get above 4000 rpm unless on a decline. I changed the spark plugs as they were old and that's usually the obvious problem and easiest to fix but it didn't really help. im used to a DSM so i don't know a whole lot about this car but would the timing be off or maybe a bad crank position sensor? any help would be greatly appreciated.
thanks!!!

 

you only have 19k on your 03? damn! i have 80k on my 03.

as far as loss of power i would start with a good tuneup and see if that helps any

 

hahaha yea i got it last august with 6500 on it from an auction. no complaints about it either. i'll get the plug wires checked out and air and fuel filters. im changing the oil this weekend but i doubt that has much to do with it haha

 

no codes being thrown? any weird noises?

 

no weird noises and idles perfect. the only code being thrown is the crank position sensor

 

damn nice! there arent any spark plug wires fyi. we have individual coilpacks on top of the plugs

 

..... well that goes to show ya how much i know bout this car!!

 

its ok we all start somewhere. id take a look at fixing that cps code tho. codes are never a good thing

 

ok well checked the codes and it threw a 1324 which read "mfr ignition sys or misfire" ... somethin along those lines but when i researched ecu codes here ... https://honda-tech.com/zerothread?id=978933 .... i got "Knock Sensor Power Source Circuit Low Voltage" .... i am completely lost at where to begin and which code source to follow hahaha. has anyone else ever gotten any of these codes and what do i do???

thanks!

 

just to add .... it was loosing power and not letting me go above 82mph before i changed the plugs .... but i didn't put NGK plugs in ... would that really make a difference and be causing my problems?

 

Stick with NGK: PZFR6F-11

 

alright i'll swap some in tomorrow ... still need to figure out what this code means ...

 

also make sure u check coolant levels cause if its low u can loose power as well my friends car kept boggin out on him and he had his radiator flushed but the shop he took it 2 got side track on bs and didnt refil so i took a look @ it and it didnt really have any coolant. prior to me changing the coolant his car wouldnt rev past 4 changed it and tranny fluid as well, and car ran smooth