i30 Owners Club

GOT PROBLEMS OR ISSUES? => DIESEL => Topic started by: JLang83 on June 14, 2021, 19:11:00

Title: Crankshaft Position Sensor - 08 i30 CRDi
Post by: JLang83 on June 14, 2021, 19:11:00: Hi All
Hoping for some advice - car wouldn't start and AA came out - machine reader said crankshaft position sensor issue. Garage replaced this but no joy - engine still intermittently fails or won't start. Mechanic says it could be related to the flywheel - repairs for this would basically write-off the car. Can anyone think of another reason the CPS replacement hasn't solved the error?

Grateful for anything at all!
TIA
Title: Re: Crankshaft Position Sensor - 08 i30 CRDi
Post by: Shambles on June 14, 2021, 19:27:48: Hi there and :welcum:

Did your mechanic recalibrate the system with the new CPS fitted? I'm fairly sure this is mandatory...
Title: Re: Crankshaft Position Sensor - 08 i30 CRDi
Post by: JLang83 on June 14, 2021, 19:49:51: Thanks Shambles. I'll ask tomorrow - can you explain what you mean by this?! I'm totally illiterate about car mechanics!
Title: Re: Crankshaft Position Sensor - 08 i30 CRDi
Post by: Shambles on June 14, 2021, 21:36:26: Quote from: JLang83 on June 14, 2021, 19:49:51
can you explain what you mean by this?

A decent mech would know if this is required - usually involves some driving at set speeds. One of our Tech Advisors might know more.
Title: Re: Crankshaft Position Sensor - 08 i30 CRDi
Post by: JLang83 on June 15, 2021, 09:30:22: Ah - the car still wont start or rather mostly wont start - occasional burst of life. Something is interrupting the signal and making the ECM think the sensor has failed I think?
Title: Re: Crankshaft Position Sensor - 08 i30 CRDi
Post by: sundiz on June 16, 2021, 14:05:01: I did a quick search in HY repair manual and did not find any mention about calibration after change. Coil resistance of the sensor should be 774-946ohms and signal waveform should be checked with a scantool after change. Recommended to check with camshaft position sensor to see that camshaft position sensor has one signal and crankshaft has two in the same time period.