Tandem pump replacement

lirunaway

lirunaway

Veteran Member
Joined
Feb 17, 2010
Location
Mooresville, NC
TDI
2006 VW Golf TDI, Model Year:2006 Code:6 MFG:07/05 Vin:9BWGR61J364004114 Sales Model:9B1 538 Description:1.9 TDI High 100 Engine:BEW Type:TD CCM:1896 KW:74 Description:Pumpe-D... Transmission:GPC Type:A Number:09AH GVWR:4097 Front:2269 Rear:1850
This is the first time I'm seeing anything about a recall. Mine filled up with diesel last winter. It was a few days after I cleaned the fuel injectors and checked the oil level. I always check the oil level when the hood is up regardless of what I'm doing. It's just a habit of mine. I didn't know why it did this at the time. After replacing the motor I found the second motor had a leak on the pierburg pump vacuum fitting. I put my old bosch pump on it. Luckily I checked the oil level and found it was filling up quick. I JB welded the peirburg pump and put it back on. No more bosch for me.

I have read on here many years ago someone said the check valve hangs up in the cold. It did get unusually cold for North Carolina that night. I wonder if a frost heater would be a good idea to help with the situation.

I used an allen wrench with a ball on the end.
 
V

vlodster

Member
Joined
Dec 3, 2004
Location
az
TDI
Jetta, '04, BEW
Do I need to use gasket sealant, on both sides of the metal gasket where the the tandem pump bolts to the cylinder head?
 
M

Mwhite01

Member
Joined
Sep 3, 2017
Location
Bristol
TDI
'07 Jetta 1.9 PD BXE
I didn't seat the pump into the camshaft correctly. Snapped the pump clean off at one of the bolts
 
rocketboy52

rocketboy52

Veteran Member
Joined
Jan 13, 2010
Location
Tehachapi CA
TDI
2004 Passat TDI
Mwhite01 said:
I didn't seat the pump into the camshaft correctly. Snapped the pump clean off at one of the bolts
Click to expand...
It would be super interesting to learn what you did wrong so others didn't repeat it! I just installed a new unit on my Passat last night, but I'm worried about not having it seated correctly now, and on the passat, I really struggled with getting it on and off. Swapping the coolant manifold and the tandem pump, with the transmission out, took me 5 hours. I'm frustrated that it took so long, but even with the tranny out, all the hoses, and wiring bundles, matched with the closeness of the firewall made it a real stinker.
 
F

flan

Veteran Member
Joined
Jul 3, 2014
Location
On my couch
TDI
04 tdi jetta
I have noticed my brakes seem low on vacuum if I either stab them hard or pump more then 2x. Is this a sign of a failing vac pump or should I look elsewhere?
 
W

wonneber

Top Post Dawg
Joined
Oct 12, 2011
Location
Monroe, NY, USA
TDI
2014 Jetta Sportwagon,2003 Jetta 261K Sold but not forgotten
Could be a leak in the pump, an external hose leaking (the hard line maybe), even the brake booster.
Do you ever hear a whoosh when you step on the pedal?
 
B

BarnAgain

Member
Joined
Aug 11, 2008
Location
Edwardsville Illinois
TDI
2005.5 MK4,BEW,DMF,DSG New Beetle 1.9 TDI PD
little leaks can be hard to find

All the little hoses off the vacuum pump can get very fragile. I replaced the link to the master cylinder with several hoses and a 90 degree brass fitting. The main hose can also have a break near the bend and be hard to find. Dig into it and feel or listen for vacuum.
 
F

flan

Veteran Member
Joined
Jul 3, 2014
Location
On my couch
TDI
04 tdi jetta
wonneber said:
Could be a leak in the pump, an external hose leaking (the hard line maybe), even the brake booster.
Do you ever hear a whoosh when you step on the pedal?
Click to expand...
i have not been listening for one but will now
BarnAgain said:
All the little hoses off the vacuum pump can get very fragile. I replaced the link to the master cylinder with several hoses and a 90 degree brass fitting. The main hose can also have a break near the bend and be hard to find. Dig into it and feel or listen for vacuum.
Click to expand...
I will poke around. Any idea what the tandem should pull fir vaccumn
 
W

wonneber

Top Post Dawg
Joined
Oct 12, 2011
Location
Monroe, NY, USA
TDI
2014 Jetta Sportwagon,2003 Jetta 261K Sold but not forgotten
flan said:
Any idea what the tandem should pull fir vaccumn
Click to expand...
You need at least 20 inches for the actuator to go full.
The nipple on the pump may be loose.
Some peen the edge of the pump case (carefully) to tighten it, some use epoxy filler s/a JB-Weld.
 
D

dabest

Well-known member
Joined
Dec 25, 2007
Location
Caledon,Ontario
TDI
05 Golf TDI
I'm also having a oil leak from the tandem pump cover.Is there any other suppliers other then the dealer to purchase the pump.
 
JDSwan87

JDSwan87

Black Swamp Thing
Joined
Feb 9, 2014
Location
Michigan near Toledo
TDI
2001 Jetta TDI, 5 speed Lagoon Blue Metallic(sold); 2005 Jetta TDI Wagon auto
dabest said:
I'm also having a oil leak from the tandem pump cover.Is there any other suppliers other then the dealer to purchase the pump.
Click to expand...
IDPARTS
Kerma
Cascade German Parts

I bought mine from IDPARTS...
 
W

wonneber

Top Post Dawg
Joined
Oct 12, 2011
Location
Monroe, NY, USA
TDI
2014 Jetta Sportwagon,2003 Jetta 261K Sold but not forgotten
dabest said:
I'm also having a oil leak from the tandem pump cover.Is there any other suppliers other then the dealer to purchase the pump.
Click to expand...
Seals and such are available also.
A lot cheaper then replacing the entire unit.
 
F

flan

Veteran Member
Joined
Jul 3, 2014
Location
On my couch
TDI
04 tdi jetta
wonneber said:
You need at least 20 inches for the actuator to go full.
The nipple on the pump may be loose.
Some peen the edge of the pump case (carefully) to tighten it, some use epoxy filler s/a JB-Weld.
Click to expand...
Well as usual I put things off until it really needs my attention, limped it Home last night with stiff pedal, no brakes:rolleyes: lots of downshifting, thankfully all rural roads no traffic. Will check out nipple tomorro.
 
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