Hello from Sheffield
- Thread starter birtymeek
- Start date
Well, tis a tale of of the dreaded flashing yellow coil light.
Replaced both oil pressure sensors from reading up and from what the diagnostic machine was telling me
This didn't rectify the issue.
A mate at work said he had this on his t6 caravelle and his mechanic replaced a glow plug thus solving the issue. It'd make sense with it being the coil light and it only being intermittant and present on cold starts. The engine also intermittantly 'misfire' until warm.
So I've replaced glow plugs 1,2 and 4 which as you may know is another time-consuming job.
Now the 'misfire' is all the time. No fault codes present
Replaced both oil pressure sensors from reading up and from what the diagnostic machine was telling me
This didn't rectify the issue.
A mate at work said he had this on his t6 caravelle and his mechanic replaced a glow plug thus solving the issue. It'd make sense with it being the coil light and it only being intermittant and present on cold starts. The engine also intermittantly 'misfire' until warm.
So I've replaced glow plugs 1,2 and 4 which as you may know is another time-consuming job.
Now the 'misfire' is all the time. No fault codes present
Hello and thank you. I bought it converted but not entirely happy with it.
Fitted a new diesel heater and today I'll be changing the fuel pick up for that as you have to have more than half a tank of fuel to use it.
Then I'm going to route the heater pipes so that it is split between front and rear.
Also, the panels on the doors haven't been cut right and are nipping the rubbers so I will be changing them.
I had flashing glow plug light that only occurred on cold start. VCDS shows oil pressure switch, but it failed the VCDS test of the oil pressure changeover valve as shown in a thread by mmi.
Both oil pressure switches changed by garage at their insistence failed to solve it and a subsequent replacement of the changeover valve solved the problem.
The only real way to solve the issue is to scan it with VCDS or similar and delve deeper if necessary.
Unfortunately my VCDS cable isn’t compatible with your newer van, but someone else Yorkshire way might be able to help.
Both oil pressure switches changed by garage at their insistence failed to solve it and a subsequent replacement of the changeover valve solved the problem.
The only real way to solve the issue is to scan it with VCDS or similar and delve deeper if necessary.
Unfortunately my VCDS cable isn’t compatible with your newer van, but someone else Yorkshire way might be able to help.
Is the changeover valve the same as oil pressure regulator n248 i think it is?
I'm not entirely sure, but don't think so.
Have a look at this thread. [T6_measured] 01-Engine - Oil pressure switches & Oil level sensor
I never had any misfire with my fault, but the engine wouldn't rev over 2500rpm.
Have a look at this thread. [T6_measured] 01-Engine - Oil pressure switches & Oil level sensor
I never had any misfire with my fault, but the engine wouldn't rev over 2500rpm.
I did read that thread. All the values and graphs are lost on me to be honest.
Once my pickup for the heater comes tomorrow, I'll reassemble fuel tank, run injector cleaner and see what happens.
I can't imagine that replacing glow plugs would have such effect so pinning my hopes on a bit of rubbish from the glow plug channel having got in to the bore and possibly causing a partial block of an jnjector
Yeah a lot of those graphs are lost on me too.
However, you must have replaced the oil pressure sensors for a reason. If that reason was the specific fault code for those sensors and the coil light is still flashing then it could well be the oil pressure changeover valve. That shows up as an oil pressure sensor fault code.
I get the feeling that changing the glow plug wasn’t based on a scan, just a throw of the parts darts because it worked for a friend of yours, so that could have nothing to do with your glow plug light.
See if it will rev over 3000 while driving it. That was something mine would not do until I’d sorted the oil pressure changeover valve.
However, you must have replaced the oil pressure sensors for a reason. If that reason was the specific fault code for those sensors and the coil light is still flashing then it could well be the oil pressure changeover valve. That shows up as an oil pressure sensor fault code.
I get the feeling that changing the glow plug wasn’t based on a scan, just a throw of the parts darts because it worked for a friend of yours, so that could have nothing to do with your glow plug light.
See if it will rev over 3000 while driving it. That was something mine would not do until I’d sorted the oil pressure changeover valve.
Definitely parts darts. And I'm borrowing that quote
Even with the light flashing it always revved over 3000k albeit reduced performance. A switch off and back on the ignition made it go away until the next random cold start
Hopefully my parts arrive today so I can get the tank back on
Hopefully once it back together you’ll be able to progress with the problem.
Do you have any access to VCDS?
Do you have any access to VCDS?
See if someone on the forum nearby has VCDS and is willing to scan your van. As I say, mine unfortunately is very limited on post 2018 vehicles.
And has the flashing coil light gone away too?
That remains to be seen. It was always an intermittent thing anyway. No light yesterday but I will only claim victory on that issue after two weeks of no lights
