jorioux
Veteran Member
An ALH TDI injection pump sells for $6.50 at my local "U-Pull" scrap yard:
http://www.kennyupull.com/montreal/pricelist.php
[video] ALH Rough idle, IQ jumping around
- Thread starter jorioux
- Start date
http://www.kennyupull.com/montreal/pricelist.php
whitedog
Veteran Member
The fuel pump listed for $6.50 is a mechanical fuel pump that you would have found on an older gas engine with a carburetor.
At this point, it's probably best to find someone local and knowledgable that can give you a hand.
At this point, it's probably best to find someone local and knowledgable that can give you a hand.
jorioux
Veteran Member
I would like to revive this thread. The issue is still present and im really going mad about it, but I have some updates.
Just to get back on my Injection Pump leak, I fixed it a couple months ago by changing both the top and bottom seals. The engine still studders the exact same as before though.
Today I did a Diesel Purge, and the engine is noticeably smoother whenever it's not studdering, but I still have the exact same symptoms as before. The engine is studdering/hiccups at idle 2/3 of the time, though as soon as I touch the throttle, the studdering stops. The engine was also studdering at idle 2/3 of the time while doing the Diesel Purge, so I guess it has nothing to do with the fuel filter or the fuel itself.
Iv also just checked my IQ with VCDS, and the IQ is jumping around from 5 to 8. When its not studdering, the IQ is steady at around 6-7.
Im always doing around 46-48 US mpg (5 L/100km), so I guess that's not an issue.
Iv also checked for check engine codes with VCDS, and there is nothing.
Does a failing DMF would cause the IQ to jump around like that?
Do you think its the DMF or the IP ? Or maybe something else?
Just to get back on my Injection Pump leak, I fixed it a couple months ago by changing both the top and bottom seals. The engine still studders the exact same as before though.
Today I did a Diesel Purge, and the engine is noticeably smoother whenever it's not studdering, but I still have the exact same symptoms as before. The engine is studdering/hiccups at idle 2/3 of the time, though as soon as I touch the throttle, the studdering stops. The engine was also studdering at idle 2/3 of the time while doing the Diesel Purge, so I guess it has nothing to do with the fuel filter or the fuel itself.
Iv also just checked my IQ with VCDS, and the IQ is jumping around from 5 to 8. When its not studdering, the IQ is steady at around 6-7.
Im always doing around 46-48 US mpg (5 L/100km), so I guess that's not an issue.
Iv also checked for check engine codes with VCDS, and there is nothing.
Does a failing DMF would cause the IQ to jump around like that?
Do you think its the DMF or the IP ? Or maybe something else?
whitedog
Veteran Member
Get your IQ down to three or four and go from there.
jimbote
Certified Volkswagen Nut
just replaced a pump on a car with the same symptoms, good used pump cured the issue completely... and quantity adjustments in both directions did nothing to alleviate the problem
Last edited:
BOWZ
Member
Jorioux. Have you fixed this problem? I am having the same issue.
BobnOH
not-a-mechanic
Looked in his profile, hasn't posted since March.
jorioux
Veteran Member
I still have the car and still haven't fixed the issue! Please help me!