Category: Mk4 Jetta/Golf/New Beetle TDI

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ALH TDI Thermostat Replacement

If your TDI is not reaching full engine temperature and the air coming out of the vents is not very hot even on the hottest setting, it may be time to replace your thermostat.  Luckily, replacing the thermostat on an ALH is a straightforward affair.

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VW 01M Automatic Transmission Service ALH TDI

In this video Corey completes a fluid and filter service on an 01M 4-speed automatic transmission in a Mk4 Jetta TDI ALH. The 01M automatic transmission was first introduced in 1995, and was used on many VW models until 2006.

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ALH Alternator Replacement How-To Video

In this video Corey from IDParts.com replaces the alternator on a Mk4 Jetta TDI with the ALH engine.  This will be the same procedure on a Mk4 Golf TDI and New Beetle TDI with ALH engines, though the New Beetle will have less room and may require more disassembly.

Check ALH Injection Pump Timing

On the ALH engine the injection pump timing is measured using a scan-tool, like a VCDS tool. Procedure Turn on the vehicle and open VCDS Click on 01-Engine Click on 04-Basic Settings In the group field, enter “00” and “GO” button A new window with a graph will appear Select the Mk4 ALH Engine in ...

MkIV Jetta Headlight Replacement

In this video Corey will show you the steps to replacing your old foggy headlights out with sparkling new ones on a 2003 VW MkIV Jetta.

TDI Fuel Injection Systems: Rotary, PD, and Common-Rail

This article explains the differences between the three different fuel injection systems in TDIs available in North America and how they function.

Fluid Capacities: All TDIs 1999-2006

**All fuel tank sizes are without “ventectomy”, which usually adds two or three gallons.   2006 Fuel Oil Coolant ATF Golf  14.5 4.3L 6.0L 3.0L Jetta  14.5 4.3L 8.0L 5.2L Jetta Wagon  14.5 4.3L 6.0L 3.0L New Beetle  14.5 4.3L 6.0L 3.0L Touareg  26.4 11.5L 9.0L 9.0L (new fill) 2005 Golf  14.5 4.3L 6.0L 3.0L ...

505.01 Approved Oils List

Below is a current list of VW 505.01 approved oils available on our site.

Volkwagen Lift Kits

VW models have a very low ride height from the factory.  Lifting them 1-2 inches can prevent a lot of road debris damage.  We outline lift spring options below.