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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old April 2nd, 2012, 09:33   #1
Join Date: Apr 2012
Location: Ny
TDI(s): 99 beetle
Default 99 beetle stuck rpm after timing belt

Ok so I do lots of car stuff but this was my first diesel. My injection pump started leaking very bad at the rotor. So I got a new timing belt and rebuild kit for the pump. Pump went smooth and everything installed nice, got the timing belt on, check the timing three times after rotating the engine a few times. All dead on. Bled the lines up to the injectors. Bam started right up, but it goes to max rpm. I tried starting it a few times and it did the same thing every time. I never let it stay at rpm I shut it off asap. Before all this the car ran great just sprayed fuel everywhere... Help!!!!
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Old April 2nd, 2012, 09:56   #2
Join Date: May 2004
Location: central Ohio
Fuel Economy: 50/45/35

I'll take guess maybe the quantity adjuster is out of position.
What parts were done with rebuild?
Note- I've never been inside one of these pumps.
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Old April 2nd, 2012, 11:22   #3
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Join Date: Aug 2004
Location: Northern Minnesota-55744
Fuel Economy: 52+ average lifetime '01

Originally Posted by BobnOH View Post
I'll take guess maybe the quantity adjuster is out of position.
What parts were done with rebuild?
Note- I've never been inside one of these pumps.
I'm with Bob in that I've never been inside the IP (and hope to keep it that way) but his "guess" is the same as mine.

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Old April 2nd, 2012, 17:22   #4
Join Date: Nov 2005
Location: Columbia NJ
TDI(s): 98 NB
Fuel Economy: 40-42

Just an FYI, I have 30 years experience in the industry. I do not do pump rebuilds. I send them to DFIS or get re-man VW.
NJ's best shop performing Quality Repairs on TDI's, Toyota, Lexus, Scion and other European and Asian cars as well as Motorcycles & ATV's. Written warranty, reasonable prices. ASE L-1 & A-9 Master re-certified. NEW LOCATION: Montague NJ. Hunter Wheel Alignment. Snap-on Tire Service.I don't need to have specials, my prices are better already!
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Old April 2nd, 2012, 19:48   #5
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Join Date: Nov 2007
Location: Lethbridge, Alberta
TDI(s): '04 Golf

I suspect that when you put the Quantity Adjuster back on the pin didn't engage the hole in the sliding collar. The position of that collar is what determines how much fuel is injected. If it is off one way, there will not be enough fuel and no throttle control. If it is off the other way, you will be stuck at max. The other possibility is that the QA is so far off that it can't control fueling. You did mark its position carefully before removing it, didn't you?

I've learned so much from my mistakes I'm thinking of making some more.
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Old April 3rd, 2012, 06:08   #6
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Join Date: Feb 2011
Location: SE michigan
TDI(s): 2002 jetta

I would pull the cover and verify you have the pin in the hole.
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