hi - i have an problem with my 2003 honda civic lx - it stalls intermittently. the first time it stalled the problem triggered the MIL (DTC: p0336 crankshaft position sensor range performance). i tapped in with a DSO and checked the CKP sensor and discovered that there is an inconsistency with the CKP sensor frequency from time to time. the frequency about 140hz most of the time but goes up to 400hz once in a while. the trace has to be square wave all the time but it's not. i'm state of california certified auto technician. i took it to the honda dealership the first time when it happened (mileage 4500) and first they said the car is functioning normally and that the all PID data looks normal - then when i insisted for them to look again they said said they found there was a noise at CKP which they didn't notice before and they would look at it again i left the car at the dealership and after a few days i took the car back i discovered all they did was to replace the CKP sensor. there were no problems with the car for the first few weeks but then it stalled again - i ignored it the first few times it but it kept happening. so checked the CKP with a DSO again justout of curiosity and I discovered the same inconsistency i found when i looked at it first (described above). i recorded the data on the DSO and took it back to the service again last week and showed them what i found out (mileage: 5800 - no MIL/check engine light this time) - they said they would look at it. now after a few days they again say all PID data looks normal and that they drove it numerous times and claim the car has no problems. i know the problem is still there but i am really not sure what to do. what do you recommend? i'd appreciate any advice. thanks! --ramin
You could always take it back again, and use the lemon law to get it replaced if they don't want to fix it right.
