yeah its unlikely air cause it starts great and has zero leaks, just simple enough to check off the list thats all, i solderd my metering valve harness so it should be making good connections but also easy to check. car is fine again and may have just been a one time thing but seems awful ironic that i just retuned it and now this... im gonna wiggle the wire on the metering valve and try to mimic it. i have a bad injector harness connection on my 7.3 that only occasionally surfaces and wiggling the harness fixes the misfire yet never mimics it when attempting to figure out exactly which connection is bad so we will see if this is any different lol... although i dont think a bad metering valve would have given ecu codes in every other system of the car so still assume its tune related. guess i will email malone....That's an interesting one. Just for reference, you can disconnect the wires from the metering valve and the car will start and run in limp mode. So my thoughts are to check the connection there. My first connector would come loose, which is how I know this. I might try it again to see if the code is P0087 but that sounds familiar. Repriming would seem to indicate a connection not tight but you would notice a leak almost for sure. And air will cause a no start no run condition which it doesn't sound like you have.
Weird. My TDI is running perfect with the cp3. Before with the cp4 it gave me p0087 when i pushed the car with the Xman cr170. Malone told me the cp4 couldn't keep up with the Xman. Haven't do any logs yet. Wait for them to reply.well when i unplug the metering valve i get P0090 not P0087 so i think its safe to assume my wiring is good. none of the ecu codes came back either like i assumed. i didnt re prime cause it starts perfect and doesnt leak so i know that isnt the issue, also why create another mess for nothing.... still waiting to hear back from malone. all the data i checked on obd eleven looks normal. it has to have been a glitch in my tune. took the car out and drove it hard still handles great, would love to hope its a one time occurance but not likely....
The CP3 doesn't require a second filter so I never made the leap! 2-micron did the community a huge favor both with his original filter then with his CP3 solution! And he still answers the occasion email!!How many of you have the secondary 2-micron filter between the OEM fuel filter and the CP3 pump?
I have it on my car. The amazing machinist and inventor, "2Micron", told me the secondary fuel filter was good for at least 100K miles. I'm coming up on 60K miles. I'm thinking I'll let it ride this time because it's a 2-hour drive each way to get work done by someone that knows about the secondary filter. I'm not a DIY guy. The mechanic at the dealer seems fine with just changing the OEM filter when I get the work done and I've had no problems so far.
What do you guys think about the 100K interval for the secondary fuel filter?
I'm thinking that's certainly true for the primary filter, but the secondary filter only sees fuel that already passed through the first filter....i would never run a fuel filter longer than 20k in any diesel ive ever owned period but you do you, not trying to debate...
Getting the correct filter is part of my concern. I'm sure the original installer would get it right....Sourcing the correct filter might be a problem...
...I have a gauge on mine and when it reads over 10 psi at idle I may consider replacing the filter...
That makes me feel better! I'm only at 60K on the secondary filter and the primary OEM filter has been changed on schedule.I changed my 2micron filter after 169k miles,was still working fine.
Did you remove the intermediate fuel pump? If not that will always cause the issue.*URGENT* P0088 code - Fuel rail/system pressure too high.
Just installed a CP3, and Metering valve with the correct number.
Car is 2011 Audi A4 2.0 Tdi CJCB
It starts fine, doesn't throw any code and will even take WOT but then if you give it 10 to 15% throttle it will go into limp mode.
has anyone had this issue?
Did you do a tune after the CP3? That's not necessary on the CJA and CBE. I would check with the vendor that sold you the CP3 as they are usually good at isolating that issue. Unfortunately that is pretty common after the upgrade but the fix is usually pretty easy once it's isolatedI don't think there is intermediate pump in a b8 audi a4?
it appears I do have an intermediate pump, will unplugging it still allow fuel to pass through it?Did you do a tune after the CP3? That's not necessary on the CJA and CBE. I would check with the vendor that sold you the CP3 as they are usually good at isolating that issue. Unfortunately that is pretty common after the upgrade but the fix is usually pretty easy once it's isolated
The CP3 has a worm drive I believe so it can pull in its own fuel so the tank pump just needs to provide the input volume. In my experience if you have more than 5 psi or so at the CP3 it's usually to muchdo ypu know what kind of pressures fuel lines would have to endure for feeding into cp3?