2007, Sales type 1Z3164, Engine Code BXE, Transmission Code JCR
I have been helping another workshop to fix a strange fault on a Octavia taxi with a implausible signal on a camshaft sensor.
If you look at the scan, ignore the no signal fault, that was caused by a wiring issue which I fixed for them.
At the moment now, it's really poor starting in the morning and the code relating to cam sensor is implausible.
1. Timing has been checked.
2. Cam sensor replaced.
3. I repaired the wiring to cam sensor for them because of no signal, so now it is just a implausible signal.
4. All the wiring relating to cam sensor has been check, all OK.
5. Suspected ECU, so another ECU has been fitted. Same.
6. I suggested electrical interference because I scoped the signal and observed an anomaly as though it was getting triggered by something else.
7. Soooooo, I made a separate loom from the sensor to ECU ruling out a loom and interference issue. Same fault.
8. Cam pulley has been replaced and has the crankshaft sensor. No wear on any pulleys.
9. I suggested to him there must be some sort of interference from another sensor within ECU, so thought maybe an injector fault.
Told him to remove rocker cover and one by one disconnect an injector and start the car and see if the code clears, just the same.![headbang]( "headbang")
So in case I have over looked an obvious issue, any ideas or suggestions?![mmm]( "mmm")
If you want to see the scope trace, I'll have to get him to bring the car in because I didn't save it.
Or I'll draw what the anomaly looks like, you will see what I mean.![bigsmile]( "bigsmile")
I have been helping another workshop to fix a strange fault on a Octavia taxi with a implausible signal on a camshaft sensor.
If you look at the scan, ignore the no signal fault, that was caused by a wiring issue which I fixed for them.
At the moment now, it's really poor starting in the morning and the code relating to cam sensor is implausible.
1. Timing has been checked.
2. Cam sensor replaced.
3. I repaired the wiring to cam sensor for them because of no signal, so now it is just a implausible signal.
4. All the wiring relating to cam sensor has been check, all OK.
5. Suspected ECU, so another ECU has been fitted. Same.
6. I suggested electrical interference because I scoped the signal and observed an anomaly as though it was getting triggered by something else.
7. Soooooo, I made a separate loom from the sensor to ECU ruling out a loom and interference issue. Same fault.
8. Cam pulley has been replaced and has the crankshaft sensor. No wear on any pulleys.
9. I suggested to him there must be some sort of interference from another sensor within ECU, so thought maybe an injector fault.
Told him to remove rocker cover and one by one disconnect an injector and start the car and see if the code clears, just the same.
So in case I have over looked an obvious issue, any ideas or suggestions?
If you want to see the scope trace, I'll have to get him to bring the car in because I didn't save it.
Or I'll draw what the anomaly looks like, you will see what I mean.
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