Year of Manufacture *: 2007 Engine Size and Code *: Z17DTH ( Optional ) ECU Type: Denso ( Optional ) Scanner Used: Multiscan ( Optional) Fault Codes: P0335 P1243 P0380
Hi All, This car is almost impossible to start when hot and starts with difficulty when cold. Codes when received; P0335 CKP, P1243 Boost press malfunction, P0380 Glow plug malfunction. She is quite a high mileage at 137000. Customer had a new crank sensor fitted about 6 months ago which did not improve the problem, I think he has only had it about 8 months and the fault developed soon after he got it! There is evidence that there has been work done in this area, black rtv on the cam cover gasket, slight damage to one spill pipe connection etc. Unfortunately I am not very familiar with this system so I am "finding my way" a bit. When reset only the crank sensor code returned. I exchanged cam and crank sensors with each other as they are identical part numbers, no change (Customer was adamant that I investigate for a cam sensor fault first). I think a CKP fault is being flagged because of the inconsistent signal brought about by the engine trying to start on one or two cylinders. Runs well enough when it is going but to be honest I did not do a roadtest. Rail pressure is showing about 31Mpa on cranking (engine not firing). I checked for leakage and it seemed excessive to me (I don't have spill bottles for this system so it was a bit of a crude test) so I sent the injectors for checking, initial responses from P.B.Asher indicate that they are probably ok. Obviously I can do nothing until they are back in the engine. I am wondering about a DMF fault but I didn't hear any DMF rattling or similar. I wouldn't have thought it would be IMV as there is plenty of rail pressure. Not quite sure where to go next.
I would be scoping the cam and crank sensors at the ECU to determine what the ECU doesnt like about the CKP to flag the P0335. Is it possable its had valve to pistion damage and the camshft lobes have turned on there shaft. (composite camshaft)
Its also possible that the relucter ring on the crankshft has become damaged.
Thanks Alan, Will scope the signals when I get the injectors back and in. I will road test it to see what driveability is like as well. With regards to valve/piston contact anything is possible, new customer and new car to him. He did say though that it was ok when he first got it and the problem developed over a period of time. Just wondering if I can clear the code with the engine running and see if it comes back immediately. I just felt that the engine was snatching and coughing so badly when cranking that the CKP code may have been a symptom and not a cause.