VT crank sensor changed 3 times, still stalling

[IBLOWN]

Im working on a VT for a mate.

Hes changed the crank sensor 3 times over the last year. The last change was 3 days ago! Still stalling.

He took it to a mechanic the other day to have his idler tensioner changed. They rang him and said it wont start! They changed the crank sensor and it started. Only lasted a day before it started stalling. Hadnt done a crank sensor beofre this for a year.

Getting code 49 cam or cank sensor intermittant.

Changed the DFI, connector looks good, changed the coils too.

He's tried water on the sensor while its hot to no avail. Sometimes even when its dead cold it wont start. Its hit and miss.

Ive cleared the codes, started the car, waited till its stopped and checked the codes and it still comes up with 49.

Havent changed the cam sensor.

Buggered if i know, any ideas before i start lending him money to buy sensors lol?

 

[accentstencil]

I'd be looking at the wiring to that sensor, particularly the plug, it might not be making good contact after a while.

 

[IBLOWN]

I'd be looking at the wiring to that sensor, particularly the plug, it might not be making good contact after a while.

Yeah, im going to have to check that too.

 

[Brett_jjj]

Ive seen bad earths cause similar problems too. Make sure that the all engine earths are clean and tight. The ECU earths are located at the rear of the passenger side head and at the front of the engine block on the belt tensioner/heater outlet pipe studs. The main engine block earth is located near the drivers side engine mounting. Also check the main body earth which is located near the battery, just follow the lead along from the negative terminal.

 

[bones308]

hi see my thred Bones308
changed three CAS one CAM sensor ,coil pack ,new fuses plus relays

car stilling stalling next was the FUEL PUMP problem fixed!!!!!!!!!!!!!!!!!

the fuel pump was shorting out when wiring heated up, once it cooled down 3-5 mins it would startup drive

 

[IBLOWN]

Ive seen bad earths cause similar problems too. Make sure that the all engine earths are clean and tight. The ECU earths are located at the rear of the passenger side head and at the front of the engine block on the belt tensioner/heater outlet pipe studs. The main engine block earth is located near the drivers side engine mounting. Also check the main body earth which is located near the battery, just follow the lead along from the negative terminal.

Hmmm, its funny how theres an earth right near the belt tensioner. The belt tensioner is what the stupid mechanic changed. I'll check it out.

 

[IBLOWN]

hi see my thred Bones308
changed three CAS one CAM sensor ,coil pack ,new fuses plus relays

car stilling stalling next was the FUEL PUMP problem fixed!!!!!!!!!!!!!!!!!

the fuel pump was shorting out when wiring heated up, once it cooled down 3-5 mins it would startup drive

Yes but its throwing an error code for the CAS.

 

[bones308]

same as what I had, CAS error but it was the FUEL PUMP!

 

[IBLOWN]

same as what I had, CAS error but it was the FUEL PUMP!

Ok, i'll check it out.

 

[phatvtcom]

+1 on the fuel pump issue. Had the same problem. Got a scan done at the auto elecs and it was throwing all types of errors that weren't even related. The first thing he said was to change the fuel pump. Got rid of the problem ever since.