Knocking at start up

[seanlitar]

My 2016 2.2 custom with new engine, injectors and TC sometimes knocks at start up. My reader shows load % 37. When warm this drops to 20 and the knocking stops.
I had the van mapped back to original but still DPF and EGR delete as before. Knocking there before remap.

After remap I am getting P02E9 at start up which I can reset until next start up. At tickover mass flow is 17g/s where my other van is 9 g/s and has no issues.
Any help appreciated.

[metalworker0]

The knocks need to be heard, to determine if mechanical or combustion related. a video perhaps.
I hear that if the MAF sensor is disconnected it runs on default settings .. that would sort of give you some sort of a clue if the knock disappears, it may point to a faulty MAF. sorry i know nothing about how many grams per second or percentages - as in what they should be . .. only that in forscan it has the COMMANDED PID and an ACTUAL, you'll be looking at these in real time

Your code refers to air flap/throttle valve, well very few here know how this works .. i for one don't know .. maybe someone will come along .

best guess would be: is it sticking .. or .. maybe has a gearbox with plastic gears that are stripped (there has been almost zero discussion here about it, so I guess again )

As you can see, it looks like this ..we can see that it has some complexity about it .. think there is more concealed inside of it .

https://www.ebay.co.uk/itm/147125310512 ... R6qtqpTRZw

Maybe - Pull apart and find out


all the best.mark

[metalworker0]

looks similar or the same

https://www.youtube.com/watch?v=FDpUo3UPmto

all the best.mark

[seanlitar]

Hello,

Just tried to ID knocking by disconnecting injectors 1 by 1. Now the van is ticking over at 1000RPM.????

[seanlitar]

Hello,

Just tried to ID knocking by disconnecting injectors 1 by 1. Now the van is ticking over at 1000RPM.????