I took my GTI mk7 as I was experiencing fuelling issues and hesitation as well due to the suction jet pump. Its still with the dealership but what they are going to be replacing is: fuel tank,evap canister,N80 and PCV valve. I wonder if your PCV valve could be causing faster than anticipated carbon buildup leading to the hesitation! Another thing to look out for might be the DV valve failing.
That’s a lot of things the dealership is replacing. Is that all under warranty? I’ve replaced my PCV and it changed nothing. My carbon buildup is actually less than normal because I have a WMI system that sprays right before the throttle body. I haven’t checked my DV. It’s the original one. I’ll check that out thanks.
My 2016 is experiencing the fueling, fuel odor (exterior), fuel tank pressure, and hesitation issue. It's all related to the suction jet pump, which is currently under recall. I went to the dealer a couple weeks ago and asked about the repair timeline. VW still has not issued the repair (jet pump replacement) & according to NHTSA documentation, repair letters will be sent out on or about August 30th. Dealers cannot currently replace the jet pump, they can only replace the entire fuel tank (which includes the pumps, etc.) under warranty. [How dumb is that?] If that job is performed now, you will still have to take the car back in later to have the new, revised jet pump installed for the recall. If the charcoal canister is fuel-saturated (which mine is), that will be replaced under warranty. I'm driving mine as little as possible, and only short trips, until the repair can be done. I ❤️ my car, but I curse VW's German engineering.😠
Glad everything improved, sucks that is still having some issues, coils and plugs have you changed them? Dont know if the sensor on the manifold and the one on the cold side charge pipe. Or evenbthe flaps on the manifold staying closed damm brother stresses me out and im not the one with the problems.
Well, I’m pretty satisfied on the improvements the installs made. So I’m not too bummed about it still bucking. But yes, I’ve replaced both coils and plugs multiple times during my bucking issue, as well as both MAP sensors. Not sure how I would Dx a non-flapping IM though.
@@JacesOwnWorld no no its getting better so thats always good, flaps can get stuck close or open dont know, dont they have lime a valve on the side and a little sensor too im not too familiar with that but couldnt hurt to take a look at it.
I hear ya. Yes, there is a sensor and two vacuum hoses that connects to the IM that makes the flaps open and close. If the sensor is unplugged, the car will run rough and throw a CEL. I know this because it’s happened to me before after I forgot to plug it in after taking my IM off. I’m not having a rough idling engine or CEL from that. One IM hose is located on the underside of the IM, which you can only access with the IM off. From the factory, this hose just attaches onto each nipple and stays on through vacuum. Long ago, my first time removing my IM, I forgot to connect one side of this hose, and when I turned the car on, it idled rough. So I had to take the IM off again, and found it disconnected from its nipple. So I zip tied both ends so it never comes off again, and I always inspect it each time I take the IM off to make sure it’s still on, which it is. The other vacuum hose connects on the side of the IM, facing the air box. This hose, if disconnected, will also create a rough idle, and I also made sure it was on after I replaced my HPFP a few days ago. So those hoses and connector are all good to go. I also inspect the IM flaps every time the IM is off, making sure they open and close and that they’re clean from carbon buildup. In the years my car has been bucking, I’ve completed two carbon valve cleanings, and it didn’t fix the bucking issue. So I know it’s not due to carbon buildup or IM flaps or such. But, I think it might be a good idea for me to do a smoke test to see if there are any leaks. It could be possible I have a hairline crack in my IM causing a leak, which could cause bucking. I don’t think I do, but it’s an easy way to know if I do you know.
@@JacesOwnWorld got it, one less thing to worry about a smoke test would be good, i dont like plastic IM i hate it for this cars they have been good but still dont like them i will put an aluminum one on when i put the port injection on, will see what happens, hopefully you can find whats causing the problem.
@roymartinez25 yeah I’m right there with you. Not a fan of the plastic IM either. I have thought about getting the aluminum ones, but I’ve read that they don’t seal up against the engine block as well and they cause leaks. I think they worked better on the MK6’s. I don’t know. I’m at a point with my car that it’s running great besides the bucking. But with the N80 valve unplugged, it runs perfectly fine now. I just hit 178k miles. When, and if, the engine ever stops running and needs a rebuild, my plan is to build the motor with forged internals. When that happens, I’ll probably get an aluminum IM and oil pan. The aluminum IM’s have the built in port injection available, and I will want to run ethanol at that point and get rid of my WMI I have setup in it. I’ll probably go bigger turbo to put me in the mid-to-upper 400whp range. Then a wavetrack LSD and I think the car will be super fun to play with. It’s fun now, but another 100whp will honestly be perfect for my taste. At this point in mods, I won’t be driving it as a daily. I’ll probably get an EV for that. I’ll just use the GTI as a fun canyon/roll race car.
Is the car logging any diagnostic errors? I had a bucking issue but I could see an engine error that suggested an issue with the HPFP, which after replacing thank goodness my issue went away.
I took my GTI mk7 as I was experiencing fuelling issues and hesitation as well due to the suction jet pump. Its still with the dealership but what they are going to be replacing is: fuel tank,evap canister,N80 and PCV valve. I wonder if your PCV valve could be causing faster than anticipated carbon buildup leading to the hesitation! Another thing to look out for might be the DV valve failing.
That’s a lot of things the dealership is replacing. Is that all under warranty?
I’ve replaced my PCV and it changed nothing. My carbon buildup is actually less than normal because I have a WMI system that sprays right before the throttle body. I haven’t checked my DV. It’s the original one. I’ll check that out thanks.
Good afternoon, i have mk7 gti pp from 2014, and also issue with this code p0089 fuel cut jn 3 4 gear. Is this an issue with the lpfp?
@sandjaibaidjoe6760 I’m not quite sure. It could be multiple things.
My 2016 is experiencing the fueling, fuel odor (exterior), fuel tank pressure, and hesitation issue. It's all related to the suction jet pump, which is currently under recall. I went to the dealer a couple weeks ago and asked about the repair timeline. VW still has not issued the repair (jet pump replacement) & according to NHTSA documentation, repair letters will be sent out on or about August 30th. Dealers cannot currently replace the jet pump, they can only replace the entire fuel tank (which includes the pumps, etc.) under warranty. [How dumb is that?] If that job is performed now, you will still have to take the car back in later to have the new, revised jet pump installed for the recall. If the charcoal canister is fuel-saturated (which mine is), that will be replaced under warranty.
I'm driving mine as little as possible, and only short trips, until the repair can be done.
I ❤️ my car, but I curse VW's German engineering.😠
@@JacesOwnWorld i have log my car by the tuner, i turns that the hpfp is failing ordered a new one yesterday
Glad everything improved, sucks that is still having some issues, coils and plugs have you changed them? Dont know if the sensor on the manifold and the one on the cold side charge pipe. Or evenbthe flaps on the manifold staying closed damm brother stresses me out and im not the one with the problems.
Well, I’m pretty satisfied on the improvements the installs made. So I’m not too bummed about it still bucking. But yes, I’ve replaced both coils and plugs multiple times during my bucking issue, as well as both MAP sensors. Not sure how I would Dx a non-flapping IM though.
@@JacesOwnWorld no no its getting better so thats always good, flaps can get stuck close or open dont know, dont they have lime a valve on the side and a little sensor too im not too familiar with that but couldnt hurt to take a look at it.
I hear ya. Yes, there is a sensor and two vacuum hoses that connects to the IM that makes the flaps open and close. If the sensor is unplugged, the car will run rough and throw a CEL. I know this because it’s happened to me before after I forgot to plug it in after taking my IM off. I’m not having a rough idling engine or CEL from that.
One IM hose is located on the underside of the IM, which you can only access with the IM off. From the factory, this hose just attaches onto each nipple and stays on through vacuum. Long ago, my first time removing my IM, I forgot to connect one side of this hose, and when I turned the car on, it idled rough. So I had to take the IM off again, and found it disconnected from its nipple. So I zip tied both ends so it never comes off again, and I always inspect it each time I take the IM off to make sure it’s still on, which it is. The other vacuum hose connects on the side of the IM, facing the air box. This hose, if disconnected, will also create a rough idle, and I also made sure it was on after I replaced my HPFP a few days ago. So those hoses and connector are all good to go.
I also inspect the IM flaps every time the IM is off, making sure they open and close and that they’re clean from carbon buildup. In the years my car has been bucking, I’ve completed two carbon valve cleanings, and it didn’t fix the bucking issue. So I know it’s not due to carbon buildup or IM flaps or such. But, I think it might be a good idea for me to do a smoke test to see if there are any leaks. It could be possible I have a hairline crack in my IM causing a leak, which could cause bucking. I don’t think I do, but it’s an easy way to know if I do you know.
@@JacesOwnWorld got it, one less thing to worry about a smoke test would be good, i dont like plastic IM i hate it for this cars they have been good but still dont like them i will put an aluminum one on when i put the port injection on, will see what happens, hopefully you can find whats causing the problem.
@roymartinez25 yeah I’m right there with you. Not a fan of the plastic IM either. I have thought about getting the aluminum ones, but I’ve read that they don’t seal up against the engine block as well and they cause leaks. I think they worked better on the MK6’s. I don’t know.
I’m at a point with my car that it’s running great besides the bucking. But with the N80 valve unplugged, it runs perfectly fine now. I just hit 178k miles. When, and if, the engine ever stops running and needs a rebuild, my plan is to build the motor with forged internals. When that happens, I’ll probably get an aluminum IM and oil pan. The aluminum IM’s have the built in port injection available, and I will want to run ethanol at that point and get rid of my WMI I have setup in it. I’ll probably go bigger turbo to put me in the mid-to-upper 400whp range. Then a wavetrack LSD and I think the car will be super fun to play with. It’s fun now, but another 100whp will honestly be perfect for my taste. At this point in mods, I won’t be driving it as a daily. I’ll probably get an EV for that. I’ll just use the GTI as a fun canyon/roll race car.
Is the car logging any diagnostic errors? I had a bucking issue but I could see an engine error that suggested an issue with the HPFP, which after replacing thank goodness my issue went away.
No Dx errors with the bucking. That’s why it’s been so hard to figure out.