Category: Mk4 Jetta/Golf/New Beetle TDI
ALH Smoke on Acceleration – Common Causes
While it might look cool, smoke is actually just unburned fuel. Smoke means you aren’t taking advantage of all the power and efficiency of your TDI. If your TDI smokes under medium or heavy acceleration, and/or feels underpowered at low RPMs, here is a list of things to check.—
Replacing Alternator Pulley In-Car – List of VW Models & Difficulty
Replacing an alternator pulley without removing the alternator requires skill, the right tools and a cooperative engine bay design. We’ve compiled a list of VW diesels that we work on and listed how difficult it is to replace the pulley with the alternator still installed in the vehicle.
Rebuilding Your TDI Fuel Injectors
First, let’s get this out of the way: Fuel injectors are a wear item on all diesels, including the VE, or rotary pump TDIs sold in North America from 1996 through 2003. Although projected wear rates vary, by the time your TDI approaches a quarter million miles, odds are the nozzles are worn and the ...
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.
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.
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.
How to Remove Wires from VW Audi Connectors
Related Parts: VW Pin Removal Tool Set
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.